FORM 10-K
Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 


FORM 10-K

 


 

x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2006

OR

 

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                  to                 

Commission file number 0-50209

 


Boston Properties Limited Partnership

(Exact name of registrant as specified in its charter)

 


 

Delaware   04-3372948

(State or other jurisdiction of

incorporation or organization)

 

(I.R.S. Employer

Identification Number)

111 Huntington Avenue, Suite 300

Boston, Massachusetts

  02199
(Address of principal executive offices)   (Zip Code)

Registrant’s telephone number, including area code: (617) 236-3300

 


Securities registered pursuant to Section 12(b) of the Act: None

Securities registered pursuant to Section 12(g) of the Act: Units of Limited Partnership Interest (Title of Class)

 


Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  x    No  ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer  x                        Accelerated filer  ¨                        Non-accelerated filer  ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ¨    No  x

As of June 30, 2006, the aggregate market value of the 8,676,075 common units of limited partnership held by non-affiliates of the Registrant was $784.3 million based upon the last reported sale price of $90.40 per share on the New York Stock Exchange on June 30, 2006 of the common stock of Boston Properties, Inc., a real estate investment trust and the sole general partner of the Registrant, for which the common units are redeemable under certain circumstances at the election of Boston Properties, Inc. (For this computation, the Registrant has excluded the market value of all common units beneficially owned by (1) Boston Properties, Inc. and (2) executive officers and directors of Boston Properties, Inc.; such exclusion shall not be deemed to constitute an admission that any such person is an affiliate of the Registrant.)

Certain information contained in Boston Properties, Inc.’s Proxy Statement relating to its Annual Meeting of Stockholders to be held May 15, 2007 is incorporated by reference in Items 10, 11, 12, 13 and 14 of Part III. Boston Properties, Inc. intends to file such Proxy Statement with the Securities and Exchange Commission not later than 120 days after the end of its fiscal year ended December 31, 2006.

 



Table of Contents

TABLE OF CONTENTS

 

ITEM NO.

  

DESCRIPTION

   PAGE NO.

PART I

     
1.   

BUSINESS

   1
1A.   

RISK FACTORS

   14
1B.   

UNRESOLVED STAFF COMMENTS

   28
2.   

PROPERTIES

   28
3.   

LEGAL PROCEEDINGS

   32
4.   

SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

   32

PART II

     
5.   

MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

  

33

6.   

SELECTED FINANCIAL DATA

   35
7.   

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATION

  

37

7A.   

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

  

80

8.   

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

   81
9.   

CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

  

133

9A.   

CONTROLS AND PROCEDURES

   133
9B.   

OTHER INFORMATION

   133

PART III

     
10.   

DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

   134
11.   

EXECUTIVE COMPENSATION

   134
12.   

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

  

134

13.   

CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

  

135

14.   

PRINCIPAL ACCOUNTING FEES AND SERVICES

   135

PART IV

     
15.   

EXHIBITS, FINANCIAL STATEMENT SCHEDULES

   136


Table of Contents

PART I

 

Item 1. Business

General

As used herein, the terms “we,” “us,” “our,” “BPLP” and the “Company” refer to Boston Properties Limited Partnership, a Delaware limited partnership, and subsidiaries, and their respective predecessors, considered as a single enterprise. As used in our financial statements beginning on page     , the term “Company” refers to BPLP. Boston Properties Limited Partnership is the entity through which Boston Properties, Inc., a fully integrated self-administered and self-managed real estate investment trust, or “REIT,” and one of the largest owners and developers of office properties in the United States, conducts substantially all of its business and owns (either directly or through subsidiaries) substantially all of its assets. Boston Properties, Inc.’s common stock, par value $0.01 per share, is listed on the New York Stock Exchange under the symbol “BXP.”

Our properties are concentrated in five markets—Boston, Washington, D.C., midtown Manhattan, San Francisco and Princeton, NJ. At December 31, 2006, we owned or had interests in 131 properties, totaling approximately 33.4 million net rentable square feet and structured parking for vehicles containing approximately 10.0 million square feet. Our properties consisted of:

 

   

127 office properties comprised of 109 Class A office properties (including six properties under construction) and 18 Office/Technical properties;

 

   

two hotels; and

 

   

two retail properties.

We own or control undeveloped land totaling approximately 524.3 acres, which will support approximately 9.3 million square feet of development. In addition, we have a 25% interest in the Boston Properties Office Value-Added Fund, L.P., which we refer to as the “Value-Added Fund,” which is a strategic partnership with two institutional investors through which we pursued the acquisition of assets within our existing markets that have deficiencies in property characteristics which provide an opportunity to create value through repositioning, refurbishment or renovation. Our investments through the Value-Added Fund are not included in our portfolio information tables or any other portfolio level statistics. At December 31, 2006, the Value-Added Fund had investments in an office complex in Herndon, Virginia, an office property in Chelmsford, Massachusetts and an office complex in San Carlos, California.

We consider Class A office properties to be centrally-located buildings that are professionally managed and maintained, attract high-quality tenants and command upper-tier rental rates, and that are modern structures or have been modernized to compete with newer buildings. We consider Office/Technical properties to be properties that support office, research and development, laboratory and other technical uses. Our definitions of Class A office and Office/Technical properties may be different than those used by other companies.

We are a full-service real estate company, with substantial in-house expertise and resources in acquisitions, development, financing, capital markets, construction management, property management, marketing, leasing, accounting, tax and legal services. We are managed by Boston Properties, Inc., in its capacity as our sole general partner. As of December 31, 2006, we had approximately 650 employees. Our thirty-three senior officers have an average of twenty-five years experience in the real estate industry and an average of fourteen years of experience with us. Our principal executive office and Boston regional office is located at 111 Huntington Avenue, Boston, Massachusetts 02199 and our telephone number is (617) 236-3300. In addition, we have regional offices at 901 New York Avenue, NW, Washington, D.C. 20001; 599 Lexington Avenue, New York, New York 10022; Four Embarcadero Center, San Francisco, California 94111; and 302 Carnegie Center, Princeton, New Jersey 08540.

Boston Properties Inc., our sole general partner, has a web site located at http://www.bostonproperties.com. On its Web site, you can obtain a copy of Boston Properties, Inc.’s and Boston Properties Limited Partnership’s

 

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annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, as soon as reasonably practicable after such reports are filed with, or furnished to, the Securities and Exchange Commission, or the SEC. You may obtain BPLP’s reports by accessing the EDGAR database at the Securities and Exchange Commission’s website at http://www.sec.gov. or we will furnish an electronic or paper copy of these reports free of charge upon written request to: Investor Relations, Boston Properties, Inc., 111 Huntington Avenue, Suite 300, Boston, MA 02199. The name “Boston Properties” and our logo (consisting of a stylized “b”) are registered service marks of the Company.

Boston Properties Limited Partnership

As of February 23, 2007, Boston Properties, Inc. was the owner of approximately 84.0% of the economic interests in BPLP. Economic interest was calculated as the number of common partnership units of BPLP owned by Boston Properties, Inc. as a percentage of the sum of (1) the actual aggregate number of outstanding common partnership units of BPLP, (2) the number of common partnership units issuable upon conversion of outstanding preferred partnership units of BPLP and (3) the number of common units issuable upon conversion of all outstanding long term incentive plan units of BPLP, or LTIP units, assuming all conditions have been met for the conversion of the LTIP units. An LTIP Unit is generally the economic equivalent of a share of our restricted common stock. Boston Properties, Inc.’s general and limited partnership interests in BPLP entitle it to share in cash distributions from, and in the profits and losses of, BPLP in proportion to its percentage interest and entitle it to vote on all matters requiring a vote of the limited partners. The other limited partners are persons who contributed their direct or indirect interests in properties to us in exchange for common units or preferred units of limited partnership interest in BPLP either in connection with Boston Properties, Inc.’s initial public offering in 1997 or in subsequent transactions. Pursuant to our limited partnership agreement, unitholders may present their common units of BPLP for cash equal to the value of an equivalent number of shares of common stock of Boston Properties, Inc. In lieu of cash, however, Boston Properties, Inc., as general partner, may, at its option, choose to acquire any common units so tendered by issuing shares of its common stock in exchange for the common units. If Boston Properties, Inc. so chooses, its common stock will be exchanged for common units on a one-for-one basis. This one-for-one exchange ratio is subject to specified adjustments to prevent dilution. We generally expect that Boston Properties, Inc., as our general partner, will elect to issue common stock in connection with each such presentation for redemption rather than having us pay cash. With each such exchange or redemption, Boston Properties, Inc.’s percentage ownership in BPLP will increase. In addition, whenever Boston Properties, Inc. issues shares of its common stock other than to acquire common units of BPLP, it must contribute any net proceeds it receives to us and we must issue an equivalent number of common units. This structure is commonly referred to as an umbrella partnership REIT, or “UPREIT.”

Our preferred units have the rights, preferences and other privileges, including the right to convert into common units, as are set forth in an amendment to our limited partnership agreement. As of December 31, 2006 and February 23, 2007, we had one series of our preferred units outstanding. Our Series Two preferred units have a liquidation preference of $50.00 per unit (or an aggregate of approximately $86.0 million at December 31, 2006 and approximately $64.0 million at February 23, 2007). The Series Two preferred units are convertible, at the holder’s election, into common units at a conversion price of $38.10 per common unit (equivalent to a ratio of 1.312336 common units per Series Two preferred unit). Distributions on the Series Two preferred units are payable quarterly and, unless the greater rate described in the next sentence applies, accrue at 7.0% until May 12, 2009 and 6.0% thereafter. If distributions on the number of common units into which the Series Two preferred units are convertible are greater than distributions calculated using the rates described in the preceding sentence for the applicable quarterly period, then the greater distributions are payable instead. Since May 2005, distributions have been made at the greater rate determined on the basis of distributions paid on the common units into which the Series Two preferred units are convertible. The terms of the Series Two preferred units provide that they may be redeemed for cash in six annual tranches, beginning on May 12, 2009, at our election or at the election of the holders. Boston Properties, Inc., as our general partner, also has the right to convert into common units any Series Two preferred units that are not redeemed when they are eligible for redemption.

 

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Transactions During 2006

Real Estate Acquisitions/Dispositions

On December 22, 2006, we executed a contract to acquire Kingstowne Towne Center, a mixed-use property located in Alexandria, Virginia, at a purchase price of approximately $134.0 million. This property is comprised of two Class A office properties totaling approximately 307,000 net rentable square feet and a retail/movie theater complex totaling approximately 88,000 net rentable square feet. The acquisition is subject to the satisfaction of customary closing conditions and, although there can be no assurance that the acquisition will be consummated on the terms currently contemplated or at all, it is expected to close by the end of the first quarter of 2007.

On November 30, 2006, we acquired Four and Five Cambridge Center and the Cambridge Center East Garage located in Cambridge, Massachusetts, at a purchase price of approximately $186.0 million. This property consists of two Class A office properties totaling approximately 436,000 net rentable square feet and structured parking for approximately 840 vehicles totaling approximately 300,000 square feet. The acquisition was financed with available cash.

On November 17, 2006, we executed a binding agreement for the sale of the long-term leasehold interest in 5 Times Square in New York City and related credits, for approximately $1.28 billion in cash. 5 Times Square is a fully-leased Class A office tower that contains approximately 1,101,779 net rentable square feet. On February 15, 2007, we completed the sale of the long-term leasehold interest in 5 Times Square in New York City and related credits, for approximately $1.28 billion in cash.

On October 27, 2006, we acquired a parcel of land located in Waltham, Massachusetts for a purchase price of approximately $5.6 million. On April 13, 2006, we acquired an adjacent parcel of land located in Waltham, Massachusetts for a purchase price of $16.0 million.

On September 15, 2006, a joint venture in which we have a 35% interest sold 265 Franklin Street, a Class A office property with approximately 347,000 net rentable square feet located in Boston, Massachusetts, at a sale price of approximately $170.0 million. Net cash proceeds totaled approximately $108.3 million, of which our share was approximately $37.9 million, after the repayment of mortgage indebtedness of approximately $60.8 million and unfunded tenant obligations and other closing costs of approximately $0.9 million.

On August 31, 2006, our Value-Added Fund acquired One and Two Circle Star Way, a 208,000 net rentable square foot office complex located in San Carlos, California, at a purchase price of approximately $63.5 million. The acquisition was financed with new mortgage indebtedness totaling $42.0 million and approximately $21.5 million in cash, of which our share was approximately $5.4 million. The mortgage financing requires interest-only payments at a fixed interest rate of 6.57% per annum and matures in September 2013. Our Value-Added Fund had total equity commitments of $140 million, of which $47.4 million was funded. Our share of the equity contributed was approximately $11.8 million. The Value-Added Fund’s investment period expired on October 25, 2006.

On August 10, 2006, we acquired 3200 Zanker Road, a Class A Office property with approximately 544,000 net rentable square feet located in San Jose, California, at a purchase price of approximately $126.0 million. The acquisition was financed with available cash.

On June 30, 2006, we acquired 303 Almaden Boulevard, a Class A office property with approximately 157,000 net rentable square feet located in San Jose, California, at a purchase price of approximately $45.2 million. The acquisition was financed with available cash.

On June 6, 2006, we completed the sale of 280 Park Avenue, a Class A office property with approximately 1,179,000 net rentable square feet located in midtown Manhattan, for approximately $1.2 billion in cash. Net

 

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cash proceeds were approximately $875 million, after legal defeasance of indebtedness secured by the property (consisting of approximately $254.4 million of principal indebtedness and approximately $28.2 million of related defeasance costs) and the payment of transfer taxes, brokers’ fees and other customary closing costs.

On May 31, 2006, we redeemed the outside members’ equity interests in the limited liability company that owns Citigroup Center for an aggregate redemption price of $100 million, with $50 million paid at closing and $25 million to be paid on each of the first and second anniversaries of the closing or, if earlier, in connection with a sale of Citigroup Center.

On May 8, 2006, a joint venture in which we have a 50% interest acquired additional land parcels located in New York City for an aggregate purchase price of approximately $15.3 million. On March 13, 2006, the joint venture acquired an adjacent land parcel located in New York City for a purchase price of approximately $6.0 million. The joint venture obtained mortgage financing collateralized by the land parcels totaling approximately $23.6 million. The mortgage financing bears interest at a variable rate equal to LIBOR plus 2.25% per annum and matures in May 2008.

On January 3, 2006, we completed the previously disclosed sale of a parcel of land at the Prudential Center located in Boston, Massachusetts, which is being developed as the Mandarin Oriental, a hotel and condominium mixed-use complex.

Developments

On December 6, 2006, we commenced construction of One Preserve Parkway, a Class A office property totaling approximately 183,000 net rentable square feet located in Rockville, Maryland. We have not pre-leased any of the space and expect that the project will be completed in the second quarter of 2008.

On September 18, 2006, we commenced construction of 77 Fourth Avenue, a Class A office project with approximately 210,000 net rentable square feet, located in Waltham, Massachusetts. We have not pre-leased any of the space and expect that the project will be completed in the first quarter of 2008.

On July 22, 2006, we placed in-service our Capital Gallery expansion project, consisting of a ten-story addition totaling approximately 319,000 net rentable square feet of Class A office space located in Washington, D.C. The property is currently 97% leased.

On April 1, 2006, we placed-in-service 12290 Sunrise Valley, a 182,000 net rentable square foot Class A office property located in Reston, Virginia. The property is currently 100% leased.

On March 31, 2006, we commenced construction of South of Market, a Class A office project consisting of three buildings aggregating approximately 652,000 net rentable square feet located in Reston, Virginia. The project is currently 24% pre-leased. We expect that the project will be completed in the first quarter of 2008. On November 21, 2006, we obtained construction financing totaling $200.0 million collateralized by the project. The construction financing bears interest at a variable rate equal to LIBOR plus 1.25% per annum and matures in November 2009 with two one-year extension options.

On January 17, 2006, we placed-in-service our Seven Cambridge Center development project located in Cambridge, Massachusetts. Seven Cambridge Center is a fully-leased, build-to-suit project with approximately 231,000 net rentable square feet of office, research laboratory and retail space. We have leased 100% of the space to the Massachusetts Institute of Technology for occupancy by its affiliate, the Eli and Edythe L. Broad Institute. On October 1, 2005, we had placed-in-service the West Garage phase of the project consisting of parking for approximately 800 cars.

 

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As of December 31, 2006, we had five active construction projects underway, which aggregate an estimated total investment of $452.4 million. The estimated total investment for our properties under construction as of December 31, 2006 is detailed below (in thousands):

 

Properties Under Construction

  

Estimated

Stabilization Date

  

Location

   Estimated Total
Investment
 

Wisconsin Place- Infrastructure
(23.89% ownership)

   N/A    Chevy Chase, MD    $ 34,569 (1)

505 9th Street (50% ownership)

   First Quarter, 2008    Washington, D.C.      65,000 (1)

South of Market

   Third Quarter, 2009    Reston, VA      213,800  

77 Fourth Avenue

   Fourth Quarter, 2008    Waltham, MA      79,707  

One Preserve Parkway

   Fourth Quarter, 2009    Rockville, MD      59,330  
              

Total Properties Under Construction

         $ 452,406  
              

(1) Represents our share of the estimated total investment.

Equity Transactions

During the year ended December 31, 2006, 1,982,105 of our Series Two preferred units were converted by the holders into 2,601,132 common units of limited partnership interest. The common units of limited partnership interest were subsequently presented by the holders for redemption and were redeemed by Boston Properties, Inc. in exchange for 2,601,132 shares of its common stock. In addition, during the year ended December 31, 2006, Boston Properties, Inc. redeemed an aggregate of 560,133 common units of limited partnership interest, presented by the holders for redemption, in exchange for an equal number of shares of common stock.

Each time Boston Properties, Inc. issues shares of common stock (other than in exchange for common units upon exercise by limited partners of their redemption right), it contributes the proceeds of such issuance to us in return for an equivalent number of common units. During the year ended December 31, 2006, we issued 1,793,418 common units to Boston Properties, Inc. in exchange for the proceeds from the exercises of stock options under the Boston Properties, Inc. 1997 Stock Option and Incentive Plan.

Exchangeable Notes Offering

On April 6, 2006, we closed an offering of $400 million in aggregate principal amount of our 3.75% exchangeable senior notes due 2036. On May 2, 2006, we closed an additional $50 million aggregate principal amount of the notes as a result of the underwriter’s exercise of its over-allotment option. When issued, the notes were exchangeable into Boston Properties, Inc.’s common stock at an initial exchange rate, subject to adjustment, of 8.9461 shares per $1,000 principal amount of notes (or an initial exchange price of approximately $111.78 per share of common stock). As a result of Boston Properties, Inc.’s declaration of a $5.40 per common share special cash distribution in December 2006, the exchange rate of the notes was adjusted effective December 29, 2006 to 9.3900 per $1,000 principal amount of notes (or an exchange price of approximately $106.50 per share of common stock). Noteholders may require us to purchase the notes at par initially on May 18, 2013 and, after that date, the notes will be redeemable at par at our option. See Note 8 to the Consolidated Financial Statements for a description of the terms of the notes.

Special Distribution

On December 15, 2006, Boston Properties, Inc., as our general partner, declared a special cash distribution of $5.40 per common partnership unit and LTIP unit which was paid on January 30, 2007 to unitholders of record as of the close of business on December 29, 2006. The decision to declare a special distribution was the result of the sales of assets in 2006, including 280 Park Avenue and 265 Franklin Street. We did not make any change in

 

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our policy with respect to regular quarterly distributions. The special cash distribution was in addition to the regular quarterly distribution of $0.68 per common partnership unit and LTIP unit resulting in a total payment of $6.08 per common partnership unit and LTIP unit paid on January 30, 2007.

Business and Growth Strategies

Business Strategy

Our primary business objective is to maximize return on investment so as to provide our investors with the greatest possible total return. Our strategy to achieve this objective is:

 

   

to concentrate on a few carefully selected geographic markets, including Boston, Washington D.C., midtown Manhattan, San Francisco and Princeton, NJ., and to be one of the leading, if not the leading, owners and developers in each of those markets. We select markets and submarkets where tenants have demonstrated a preference for high-quality office buildings and other facilities;

 

   

to emphasize markets and submarkets within those markets where the lack of available sites and the difficulty of receiving the necessary approvals for development and the necessary financing constitute high barriers to the creation of new supply, and where skill, financial strength and diligence are required to successfully develop, finance and manage high-quality office, research and development space as well as selected retail space;

 

   

to take on complex, technically challenging projects, leveraging the skills of our management team to successfully develop, acquire or reposition properties which other organizations may not have the capacity or resources to pursue;

 

   

to concentrate on high-quality real estate designed to meet the demands of today’s tenants who require sophisticated telecommunications and related infrastructure and support services, and to manage those facilities so as to become the landlord of choice for both existing and prospective clients;

 

   

to opportunistically acquire assets which increase our penetration in the markets in which we have chosen to concentrate and which exhibit an opportunity to improve or preserve returns through repositioning (through a combination of capital improvements and shift in marketing strategy), changes in management focus and re-leasing as existing leases terminate;

 

   

to explore joint venture opportunities primarily with existing owners of land parcels located in desirable locations, who seek to benefit from the depth of development and management expertise we are able to provide and our access to capital, and/or to explore joint venture opportunities with strategic institutional partners, leveraging our skills as owners, operators and developers of Class A office space as well as partners with expertise in mixed-use opportunities;

 

   

to pursue on a selective basis the sale of properties, including core properties, to take advantage of our value creation and the demand for our premier properties (see “Part II, Item 7 Management’s Discussion and Analysis of Financial Condition and Results of Operations—Overview” beginning on page 38);

 

   

to seek third-party development contracts, which can be a significant source of revenue and enable us to retain and utilize our existing development and construction management staff, especially when our internal development is less active or when new development is less-warranted due to market conditions; and

 

   

to enhance our capital structure through our access to a variety of sources of capital.

Growth Strategies

External Growth

We believe that our development experience and our organizational depth position us to continue to selectively develop a range of property types, including low-rise suburban office properties, high-rise urban

 

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developments, mixed-use developments and research and laboratory space, within budget and on schedule. Other factors that contribute to our competitive position include:

 

   

our control of sites (including sites under contract or option to acquire) in our markets that will support approximately 9.3 million square feet of new office, hotel and residential development;

 

   

our reputation gained through 37 years of successful operations and the stability and strength of our existing portfolio of properties;

 

   

our relationships with leading national corporations and public institutions seeking new facilities and development services;

 

   

our relationships with nationally recognized financial institutions that provide capital to the real estate industry;

 

   

our track record and reputation for executing acquisitions efficiently provides comfort to domestic and foreign institutions, private investors and corporations who seek to sell commercial real estate in our market areas;

 

   

our ability to act quickly on due diligence and financing; and

 

   

our relationships with institutional buyers and sellers of high-quality real estate assets.

Opportunities to execute our external growth strategy fall into three categories:

 

   

Development in selected submarkets.    We believe the continued development of well-positioned office buildings will be justified in many of our submarkets. We believe in acquiring land after taking into consideration timing factors relating to economic cycles and in response to market conditions that allow for its development at the appropriate time. While we purposely concentrate in markets with high barriers-to-entry, we have demonstrated throughout our 37-year history, an ability to make carefully timed land acquisitions in submarkets where we can become one of the market leaders in establishing rent and other business terms. We believe that there are opportunities at key locations in our existing and other markets for a well-capitalized developer to acquire land with development potential.

In the past, we have been particularly successful at acquiring sites or options to purchase sites that need governmental approvals for development. Because of our development expertise, knowledge of the governmental approval process and reputation for quality development with local government regulatory bodies, we generally have been able to secure the permits necessary to allow development and to profit from the resulting increase in land value. We seek complex projects where we can add value through the efforts of our experienced and skilled management team leading to attractive returns on investment.

Our strong regional relationships and recognized development expertise have enabled us to capitalize on unique build-to-suit opportunities. We intend to seek and expect to continue to be presented with such opportunities in the near term allowing us to earn relatively significant returns on these development opportunities through multiple business cycles.

 

   

Acquisition of assets and portfolios of assets from institutions or individuals.    We believe that due to our size, management strength and reputation, we are well positioned to acquire portfolios of assets or individual properties from institutions or individuals if valuations meet our criteria. We may acquire properties for cash, but we are also particularly well-positioned to appeal to sellers wishing to contribute on a tax-deferred basis their ownership of property for equity in a diversified real estate operating company that offers liquidity through access to the public equity markets in addition to a quarterly distribution. The ability to offer our common and preferred units to sellers who would otherwise recognize a taxable gain upon a sale of assets for cash or common stock of Boston Properties, Inc. may facilitate this type of transaction on a tax-efficient basis. In addition, we may consider mergers with and acquisitions of compatible real estate firms.

 

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Acquisition of underperforming assets and portfolios of assets.    We believe that because of our in-depth market knowledge and development experience in each of our markets, our national reputation with brokers, financial institutions and others involved in the real estate market and our access to competitively-priced capital, we are well-positioned to identify and acquire existing, underperforming properties for competitive prices and to add significant additional value to such properties through our effective marketing strategies and a responsive property management program. We have developed this strategy and program for our existing portfolio, where we provide high-quality property management services using our own employees in order to encourage tenants to renew, expand and relocate in our properties. We are able to achieve speed and transaction cost efficiency in replacing departing tenants through the use of in-house and third-party vendors’ services for marketing, including calls and presentations to prospective tenants, print advertisements, lease negotiation and construction of tenant improvements. Our tenants benefit from cost efficiencies produced by our experienced work force, which is attentive to preventive maintenance and energy management.

 

   

The continued inflow of capital into well located well leased Class A office properties like ours makes the acquisition environment increasingly competitive. We continue to explore opportunities and will maintain our core underwriting and discipline.

Internal Growth

We believe that significant opportunities will exist to increase cash flow from our existing properties because they are of high quality and in desirable locations. In addition, our properties are in markets where, in general, the creation of new supply is limited by the lack of available sites, the difficulty of receiving the necessary approvals for development on vacant land and the difficulty of obtaining financing. Our strategy for maximizing the benefits from these opportunities is three-fold: (1) to provide high-quality property management services using our employees in order to encourage tenants to renew, expand and relocate in our properties, and (2) to achieve speed and transaction cost efficiency in replacing departing tenants through the use of in-house services for marketing, lease negotiation and construction of tenant improvements and (3) work with new or existing tenants with space expansion and contraction maximizing the cash flow from our assets. We believe that with the continued improvement of the economy, our office properties will add to our internal growth because of their desirable locations. In addition, we believe that with the continued improvement in the business and leisure travel sector, our two hotel properties will continue to add to our internal growth because of their desirable locations in the downtown Boston and East Cambridge submarkets. We expect to continue our internal growth as a result of our ability to:

 

   

Cultivate existing submarkets and long-term relationships with credit tenants.    In choosing locations for our properties, we have paid particular attention to transportation and commuting patterns, physical environment, adjacency to established business centers, proximity to sources of business growth and other local factors.

We had an average lease term of 7.8 years at December 31, 2006 and continue to cultivate long-term leasing relationships with a diverse base of high quality, financially stable tenants. Based on leases in place at December 31, 2006, leases with respect to 5.3% of the total square feet from our Class A office properties will expire in calendar year 2007.

 

   

Directly manage properties to maximize the potential for tenant retention.    We provide property management services ourselves, rather than contracting for this service, to maintain awareness of and responsiveness to tenant needs. We and our properties also benefit from cost efficiencies produced by an experienced work force attentive to preventive maintenance and energy management and from our continuing programs to assure that our property management personnel at all levels remain aware of their important role in tenant relations.

 

   

Replace tenants quickly at best available market terms and lowest possible transaction costs.    We believe that we are well-positioned to attract new tenants and achieve relatively high rental rates as a

 

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result of our well-located, well-designed and well-maintained properties, our reputation for high-quality building services and responsiveness to tenants, and our ability to offer expansion and relocation alternatives within our submarkets.

 

   

Extend terms of existing leases to existing tenants prior to expiration.    We have also successfully structured early tenant renewals, which have reduced the cost associated with lease downtime while securing the tenancy of our highest quality credit-worthy tenants on a long-term basis and enhancing relationships.

Policies with Respect to Certain Activities

The discussion below sets forth certain additional information regarding our investment, financing and other policies. These policies have been determined by the Board of Directors of Boston Properties, Inc. and, in general, may be amended or revised from time to time by the Board of Directors of Boston Properties, Inc.

Investment Policies

Investments in Real Estate or Interests in Real Estate

Our investment objectives are to provide quarterly cash distributions to our securityholders and to achieve long-term capital appreciation through increases in the value of BPLP. We have not established a specific policy regarding the relative priority of these investment objectives.

We expect to continue to pursue our investment objectives primarily through the ownership of our current properties, development projects and other acquired properties. We currently intend to continue to invest primarily in developments of properties and acquisitions of existing improved properties or properties in need of redevelopment, and acquisitions of land that we believe have development potential, primarily in our markets—Boston, Washington, D.C., midtown Manhattan, San Francisco and Princeton, NJ. Future investment or development activities will not be limited to a specified percentage of our assets. We intend to engage in such future investment or development activities in a manner that is consistent with the maintenance of Boston Properties, Inc.’s status as a REIT for federal income tax purposes. In addition, we may purchase or lease income-producing commercial and other types of properties for long-term investment, expand and improve the real estate presently owned or other properties purchased, or sell such real estate properties, in whole or in part, when circumstances warrant. We do not have a policy that restricts the amount or percentage of assets that will be invested in any specific property, however, our investments may be restricted by our debt covenants.

We may also continue to participate with third parties in property ownership, through joint ventures or other types of co-ownership, including third parties with expertise in mixed-used opportunities. These investments may permit us to own interests in larger assets without unduly restricting diversification and, therefore, add flexibility in structuring our portfolio.

Equity investments may be subject to existing mortgage financing and other indebtedness or such financing or indebtedness as may be incurred in connection with acquiring or refinancing these investments. Debt service on such financing or indebtedness will have a priority over any distributions with respect to the common stock of Boston Properties, Inc. Investments are also subject to our policy not to be treated as an investment company under the Investment Company Act of 1940, as amended (the “1940 Act”).

Investments in Real Estate Mortgages

While our current portfolio consists of, and our business objectives emphasize, equity investments in commercial real estate, we may, at the discretion of the Board of Directors of Boston Properties, Inc., invest in mortgages and other types of real estate interests consistent with Boston Properties, Inc.’s qualification as a REIT. Investments in real estate mortgages run the risk that one or more borrowers may default under such

 

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mortgages and that the collateral securing such mortgages may not be sufficient to enable us to recoup its full investment. We do not presently intend to invest in mortgages or deeds of trust, but may invest in participating or convertible mortgages if we conclude that we may benefit from the cash flow or any appreciation in value of the property.

Securities of or Interests in Persons Primarily Engaged in Real Estate Activities

Subject to the percentage of ownership limitations and gross income tests necessary for the REIT qualification of Boston Properties, Inc., we also may invest in securities of other REITs, other entities engaged in real estate activities or securities of other issuers, including for the purpose of exercising control over such entities.

Dispositions

Our disposition of properties is based upon the periodic review of our portfolio and the determination by the Board of Directors of Boston Properties, Inc. that such action would be in our best interests. Any decision to dispose of a property will be authorized by the Board of Directors of Boston Properties, Inc., as our general partner, or a committee thereof. Some holders of our limited partnership interests, including Messrs. Mortimer B. Zuckerman, Edward H. Linde and other executive officers, would incur adverse tax consequences upon the sale of certain of our properties that differ from the tax consequences to us. Consequently, holders of our limited partnership interests in BPLP may have different objectives regarding the appropriate pricing and timing of any such sale. Such different tax treatment derives in most cases from the fact that we acquired these properties in exchange for partnership interests in contribution transactions structured to allow the prior owners to defer taxable gain. Generally this deferral continues so long as we do not dispose of the properties in a taxable transaction. Unless a sale by us of these properties is structured as a like-kind exchange or in a manner that otherwise allows deferral to continue, recognition of the deferred tax gain allocable to these prior owners is generally triggered by the sale. Some of our assets are subject to tax protection agreements, which may limit our ability to dispose of the assets or require us to pay damages to the prior owners in the event of a taxable sale.

Financing Policies

Our agreement of limited partnership and the certificate of incorporation and bylaws of Boston Properties, Inc. do not limit the amount or percentage of indebtedness that we may incur. We do not have a policy limiting the amount of indebtedness that we may incur. However, our mortgages, credit facilities and unsecured debt securities contain customary restrictions, requirements and other limitations on our ability to incur indebtedness. We have not established any limit on the number or amount of mortgages that may be placed on any single property or on our portfolio as a whole.

The Board of Directors of Boston Properties, Inc. will consider a number of factors when evaluating our level of indebtedness and when making decisions regarding the incurrence of indebtedness, including the purchase price of properties to be acquired with debt financing, the estimated market value of our properties upon refinancing, the entering into agreements such as interest rate swaps, caps, floors and other interest rate hedging contracts and the ability of particular properties and BPLP as a whole to generate cash flow to cover expected debt service.

Policies with Respect to Other Activities

Boston Properties, Inc., as our sole general partner, has the authority to issue additional common and preferred units of BPLP. Boston Properties, Inc. has in the past, and may in the future, issue common or preferred units of limited partnership interest to persons who contribute their direct or indirect interests in properties to us in exchange for such common or preferred units of BPLP. We have not engaged in trading, underwriting or agency distribution or sale of securities of issuers other than BPLP and we do not intend to do so. At all times,

 

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we intend to make investments in such a manner as to maintain Boston Properties, Inc.’s qualification as a REIT, unless because of circumstances or changes in the Internal Revenue Code of 1986, as amended (or the Treasury Regulations), the Board of Directors of Boston Properties, Inc. determines that it is no longer in the best interest of Boston Properties, Inc. to qualify as a REIT. We may make loans to third parties, including, without limitation, to joint ventures in which we participate. We intend to make investments in such a way that we will not be treated as an investment company under the 1940 Act. Our policies with respect to these and other activities may be reviewed and modified or amended from time to time by the Board of Directors of Boston Properties, Inc.

Energy Conservation

As one of the largest owners and developers of office properties in the United States, we strive to control our energy consumption through active management at our properties. On an annual basis, our property managers identify capital improvement projects and building systems enhancements that have the potential to reduce the use of energy at each property. The identified projects and enhancements are then reviewed with senior management, and the projects and enhancements that offer material energy savings and meet our investment criteria are then implemented.

Over the past several years, we have implemented numerous improvement projects and system enhancements, including, without limitation, the following:

 

   

installation of higher efficiency lighting in public spaces, garages, stairways and elevators;

 

   

installation of new, high-efficiency motors, air compressors, chillers and other heating, ventilation and air conditioning system components;

 

   

replacing energy management systems;

 

   

installation of solar reflective window film to reduce solar heat gain, glare and ultraviolet radiation;

 

   

modernizing cooling towers with high-efficiency fill and distribution pans; and

 

   

adding wall and ceiling insulation to reduce thermal losses.

In addition to the physical improvements and systems enhancements described above, our property managers also benchmark building energy consumption with the goal of optimizing equipment use and operation, provide training for our property management staff and strive to make our tenants more aware of energy codes and energy saving opportunities. These management initiatives are intended to not only help reduce energy consumption in the short term, but also heighten awareness of the issue to help ensure energy efficiency over the long term.

We believe our efforts described above have led to a meaningful reduction in the number of kilowatt-hours (“kWh”) used in the operation of our properties and a reduction in our operating expenses. We estimate that the efforts we have undertaken since 2001 have reduced the amount of electrical usage throughout our portfolio by more than 30 million kWh per year. These efforts have also been recognized by third parties as we have achieved the Environmental Protection Agency’s Energy Star® designation at several of our buildings and have earned energy conservation awards and recognition at properties located throughout our portfolio.

In addition to the efforts described above, we participate in utility rebate programs when making significant capital improvements and, when economically practicable, we subscribe to long-term, fixed utility contracts on a regional basis.

On an annual basis, we intend to continue to explore ways of reducing our energy consumption, and related expenses, across our portfolio.

 

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Environmentally Sound Development

“Green” buildings are designed, constructed, and operated to provide greater environmental, economic, health and productivity performance than conventional buildings. As a developer, we participate in the U.S. Green Building Council’s Leadership in Energy and Environmental Design (LEED) program. The LEED Green Building Rating System® is a voluntary, consensus-based national standard of design guidelines for high-performance, sustainable “Green” buildings. The USGBC’s LEED certification follows a rigorous registration process which evaluates and gives Certified, Silver, Gold, and Platinum ratings to green buildings. We currently have LEED registered projects under development in both our Boston and Washington, D.C. markets.

Many of the local jurisdictions in which we operate and develop buildings are also making efforts to promote environmentally sound developments by adopting aspects of the LEED program. As a result, we intend to continue to be proactive in evaluating each new development to determine whether it is physically practical and economically feasible to produce a LEED certified building.

Competition

We compete in the leasing of office space with a considerable number of other real estate companies, some of which may have greater marketing and financial resources than are available to us. In addition, our hotel properties compete for guests with other hotels, some of which may have greater marketing and financial resources than are available to us and to the manager of our hotels, Marriott International, Inc.

Principal factors of competition in our primary business of owning, acquiring and developing office properties are the quality of properties, leasing terms (including rent and other charges and allowances for tenant improvements), attractiveness and convenience of location, the quality and breadth of tenant services provided, and reputation as an owner and operator of quality office properties in the relevant market. Additionally, our ability to compete depends upon, among other factors, trends of the national and local economies, investment alternatives, financial condition and operating results of current and prospective tenants, availability and cost of capital, construction and renovation costs, taxes, utilities, governmental regulations, legislation and population trends.

The Hotel Properties

We operate our two hotel properties through a taxable REIT subsidiary (“TRS”). The TRS, our wholly-owned subsidiary, is the lessee pursuant to leases for each of the hotel properties. As lessor, we are entitled to a percentage of gross receipts from the hotel properties. The hotel leases allow all the economic benefits of ownership to flow to us. Marriott International, Inc. continues to manage the hotel properties under the Marriott name and under terms of the existing management agreements. Marriott has been engaged under separate long-term incentive management agreements to operate and manage each of the hotels on behalf of the TRS. In connection with these arrangements, Marriott has agreed to operate and maintain the hotels in accordance with its system-wide standard for comparable hotels and to provide the hotels with the benefits of its central reservation system and other chain-wide programs and services. Under a separate management agreement for each hotel, Marriott acts as the TRS’ agent to supervise, direct and control the management and operation of the hotel and receives as compensation base management fees that are calculated as a percentage of the hotel’s gross revenues, and supplemental incentive fees if the hotel exceeds negotiated profitability breakpoints. In addition, the TRS compensates Marriott, on the basis of a formula applied to the hotel’s gross revenues, for certain system-wide services provided by Marriott, including central reservations, marketing and training. During 2006, 2005 and 2004, Marriott received an aggregate of approximately $4.7 million, $4.2 million and $4.0 million, respectively, under the management agreements.

 

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Seasonality

Our hotel properties traditionally have experienced significant seasonality in their operating income, with the percentage of net operating income by quarter over the year ended December 31, 2006 shown below.

 

First Quarter

   Second Quarter   Third Quarter   Fourth Quarter
4%    32%   28%   36%

Corporate Governance

Boston Properties, Inc. is currently managed by a ten member Board of Directors, which is divided into three classes (Class I, Class II and Class III). The Board of Directors of Boston Properties, Inc. is currently composed of three Class I directors (Mortimer B. Zuckerman, Carol B. Einiger and Richard E. Salomon), four Class II directors (Lawrence S. Bacow, Zoë Baird, Alan J. Patricof and Martin Turchin) and three Class III directors (William M. Daley, Edward H. Linde and David A. Twardock). The members of each class of the Board of Directors of Boston Properties, Inc. serve for staggered three-year terms, and the terms of the current Class I, Class II and Class III directors expire upon the election and qualification of directors at the annual meetings of stockholders of Boston Properties, Inc. held in 2007, 2008 and 2009, respectively. At each annual meeting of stockholders of Boston Properties, Inc., directors will be elected or re-elected for a full term of three years to succeed those directors whose terms are expiring.

Boston Properties, Inc.’s Board of Directors has Audit, Compensation and Nominating and Corporate Governance Committees. The membership of each of these committees is described below.

 

Name of Director

   Audit   Compensation  

Nominating and

Corporate
Governance

Lawrence S. Bacow

   X    

Zoë Baird

     X   X

William M. Daley

       X*

Carol B. Einiger

   X    

Alan J. Patricof

   X*    

Richard E. Salomon

     X*  

David A. Twardock

     X   X

X=Committee member, *=Chair

 

   

The Board of Directors of Boston Properties, Inc. has adopted charters for each of its Audit, Compensation and Nominating and Corporate Governance Committees. Each committee is comprised of three (3) independent directors. A copy of each of these charters is available on Boston Properties, Inc.’s website at http://www.bostonproperties.com under the heading “Corporate Governance” and subheading “Committees and Charters.” A copy of each of these charters is also available in print upon written request addressed to Investor Relations, Boston Properties, Inc., 111 Huntington Avenue, Boston, MA 02199.

 

   

The Board of Directors of Boston Properties, Inc. has adopted Corporate Governance Guidelines, a copy of which is available on Boston Properties, Inc.’s website at http://www.bostonproperties.com under the heading “Corporate Governance” and subheading “Governance Guidelines.” A copy of these guidelines is also available in print upon written request addressed to Investor Relations, Boston Properties, Inc., 111 Huntington Avenue, Boston, MA 02199.

 

   

The Board of Directors of Boston Properties, Inc. has adopted a Code of Business Conduct and Ethics, which governs business decisions made and actions taken by the directors, officers and employees of Boston Properties, Inc. A copy of this code is available on Boston Properties, Inc.’s website at

 

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http://www.bostonproperties.com under the heading “Corporate Governance” and subheading “Code of Conduct and Ethics.” We intend to disclose on this website any amendment to, or waiver of, any provision of this Code applicable to the directors and executive officers of Boston Properties, Inc. that would otherwise be required to be disclosed under the rules of the SEC or the New York Stock Exchange. A copy of this Code is also available in print upon written request addressed to Investor Relations, Boston Properties, Inc., 111 Huntington Avenue, Boston, MA 02199.

 

   

The Board of Directors of Boston Properties, Inc. has established an ethics reporting system that employees may use to anonymously report possible violations of the Code of Business Conduct and Ethics, including concerns regarding questionable accounting, internal accounting controls or auditing matters, by telephone or over the internet.

 

   

On May 25, 2006, Edward H. Linde, President and Chief Executive Officer of Boston Properties, Inc., submitted to the New York Stock Exchange (the “NYSE”) the Annual CEO Certification required by Section 303A of the Corporate Governance Rules of the NYSE certifying that he was not aware of any violation by Boston Properties, Inc. of NYSE corporate governance listing standards.

 

Item 1A. Risk Factors.

Set forth below are the risks that we believe are material to our investors. We refer to our common, preferred and LTIP units together as our “securities,” and the investors who own our securities as our “securityholders.” This section contains forward-looking statements. You should refer to the explanation of the qualifications and limitations on forward-looking statements beginning on page 37.

Our performance and value are subject to risks associated with our real estate assets and with the real estate industry.

 

Our economic performance and the value of our real estate assets, and consequently the value of our securities, are subject to the risk that if our office and hotel properties do not generate revenues sufficient to meet our operating expenses, including debt service and capital expenditures, our cash flow and ability to pay distributions to our securityholders will be adversely affected. The following factors, among others, may adversely affect the income generated by our office and hotel properties:

 

   

downturns in the national, regional and local economic conditions (particularly increases in unemployment);

 

   

competition from other office, hotel and commercial buildings;

 

   

local real estate market conditions, such as oversupply or reduction in demand for office, hotel or other commercial space;

 

   

changes in interest rates and availability of attractive financing;

 

   

vacancies, changes in market rental rates and the need to periodically repair, renovate and re-let space;

 

   

increased operating costs, including insurance expense, utilities, real estate taxes, state and local taxes and heightened security costs;

 

   

civil disturbances, earthquakes and other natural disasters, or terrorist acts or acts of war which may result in uninsured or underinsured losses;

 

   

significant expenditures associated with each investment, such as debt service payments, real estate taxes, insurance and maintenance costs which are generally not reduced when circumstances cause a reduction in revenues from a property;

 

   

declines in the financial condition of our tenants and our ability to collect rents from our tenants; and

 

   

decreases in the underlying value of our real estate.

 

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We are dependent upon the economic climates of our markets—Boston, Washington, D.C., midtown Manhattan, San Francisco and Princeton, NJ

Substantially all of our revenue is derived from properties located in five markets: Boston, Washington, D.C., midtown Manhattan, San Francisco and Princeton, NJ. A downturn in the economies of these markets, or the impact that a downturn in the overall national economy may have upon these economies, could result in reduced demand for office space. Because our portfolio consists primarily of office buildings (as compared to a more diversified real estate portfolio), a decrease in demand for office space in turn could adversely affect our results of operations. Additionally, there are submarkets within our markets that are dependent upon a limited number of industries. For example, in our Washington, D.C. market we focus on leasing office properties to governmental agencies and contractors, as well as legal firms. In our midtown Manhattan market we have historically leased properties to financial, legal and other professional firms. A significant downturn in one or more of these sectors could adversely affect our results of operations.

Our investment in property development may be more costly than anticipated.

We intend to continue to develop and substantially renovate office properties. Our current and future development and construction activities may be exposed to the following risks:

 

   

we may be unable to proceed with the development of properties because we cannot obtain financing on favorable terms or at all;

 

   

we may incur construction costs for a development project which exceed our original estimates due to increases in interest rates and increased materials, labor, leasing or other costs, which could make completion of the project less profitable because market rents may not increase sufficiently to compensate for the increase in construction costs;

 

   

we may be unable to obtain, or face delays in obtaining, required zoning, land-use, building, occupancy, and other governmental permits and authorizations, which could result in increased costs and could require us to abandon our activities entirely with respect to a project;

 

   

we may abandon development opportunities after we begin to explore them and as a result we may lose deposits or fail to recover expenses already incurred;

 

   

we may expend funds on and devote management’s time to projects which we do not complete; and

 

   

we may be unable to complete construction and/or leasing of a property on schedule.

Investment returns from our developed properties may be lower than anticipated.

Our developed properties may be exposed to the following risks:

 

   

we may lease developed properties at rental rates that are less than the rates projected at the time we decide to undertake the development; and

 

   

occupancy rates and rents at newly developed properties may fluctuate depending on a number of factors, including market and economic conditions, and may result in our investments being less profitable than we expected or not profitable at all.

Our use of joint ventures may limit our flexibility with jointly owned investments.

In appropriate circumstances, we intend to develop and acquire properties in joint ventures with other persons or entities when circumstances warrant the use of these structures. We currently have eight joint ventures that are not consolidated with our financial statements. Our share of the aggregate revenue of these joint ventures represented approximately 2.7% of our total revenue (the sum of our total consolidated revenue and our share of such joint venture revenue) for the year ended December 31, 2006. Our participation in joint ventures is subject to the risks that:

 

   

we could become engaged in a dispute with any of our joint venture partners that might affect our ability to develop or operate a property;

 

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our joint venture partners may have different objectives than we have regarding the appropriate timing and terms of any sale or refinancing of properties; and

 

   

our joint venture partners may have competing interests in our markets that could create conflict of interest issues.

We face risks associated with property acquisitions.

We have acquired in the past and intend to continue to pursue the acquisition of properties and portfolios of properties, including large portfolios that could increase our size and result in alterations to our capital structure. Our acquisition activities and their success are subject to the following risks:

 

   

even if we enter into an acquisition agreement for a property, we may be unable to complete that acquisition after making a non-refundable deposit and incurring certain other acquisition-related costs;

 

   

we may be unable to obtain financing for acquisitions on favorable terms or at all;

 

   

acquired properties may fail to perform as expected;

 

   

the actual costs of repositioning or redeveloping acquired properties may be greater than our estimates;

 

   

the acquisition agreement will likely contain conditions to closing, including completion of due diligence investigations to our satisfaction or other conditions that are not within our control, which may not be satisfied;

 

   

acquired properties may be located in new markets where we may face risks associated with a lack of market knowledge or understanding of the local economy, lack of business relationships in the area and unfamiliarity with local governmental and permitting procedures; and

 

   

we may be unable to quickly and efficiently integrate new acquisitions, particularly acquisitions of portfolios of properties, into our existing operations, and this could have an adverse effect on our results of operations and financial condition.

We have acquired in the past and in the future may acquire properties or portfolios of properties through tax deferred contribution transactions in exchange for our partnership interests. This acquisition structure has the effect, among others, of reducing the amount of tax depreciation we can deduct over the tax life of the acquired properties, and typically requires that we agree to protect the contributors’ ability to defer recognition of taxable gain through restrictions on our ability to dispose of the acquired properties and/or the allocation of partnership debt to the contributors to maintain their tax bases. These restrictions on dispositions could limit our ability to sell an asset at a time, or on terms, that would be favorable absent such restrictions.

Acquired properties may expose us to unknown liability.

We may acquire properties subject to liabilities and without any recourse, or with only limited recourse against the prior owners or other third parties, with respect to unknown liabilities. As a result, if a liability were asserted against us based upon ownership of those properties, we might have to pay substantial sums to settle or contest it, which could adversely affect our results of operations and cash flow. Unknown liabilities with respect to acquired properties might include:

 

   

liabilities for clean-up of undisclosed environmental contamination;

 

   

claims by tenants, vendors or other persons against the former owners of the properties;

 

   

liabilities incurred in the ordinary course of business; and

 

   

claims for indemnification by general partners, directors, officers and others indemnified by the former owners of the properties.

 

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Competition for acquisitions may result in increased prices for properties.

We plan to continue to acquire properties as we are presented with attractive opportunities. We may face competition for acquisition opportunities with other investors, particularly private investors who can incur more leverage, and this competition may adversely affect us by subjecting us to the following risks:

 

   

we may be unable to acquire a desired property because of competition from other well-capitalized real estate investors, including publicly traded and private REITs, institutional investment funds and other real estate investors; and

 

   

even if we are able to acquire a desired property, competition from other real estate investors may significantly increase the purchase price.

We face potential difficulties or delays renewing leases or re-leasing space.

We derive most of our income from rent received from our tenants. If a tenant experiences a downturn in its business or other types of financial distress, it may be unable to make timely rental payments. Also, when our tenants decide not to renew their leases or terminate early, we may not be able to re-let the space. Even if tenants decide to renew or lease new space, the terms of renewals or new leases, including the cost of required renovations or concessions to tenants, may be less favorable to us than current lease terms. As a result, our cash flow could decrease and our ability to make distributions to our securityholders could be adversely affected.

We face potential adverse effects from major tenants’ bankruptcies or insolvencies.

The bankruptcy or insolvency of a major tenant may adversely affect the income produced by our properties. Our tenants could file for bankruptcy protection or become insolvent in the future. We cannot evict a tenant solely because of its bankruptcy. On the other hand, a bankrupt tenant may reject and terminate its lease with us. In such case, our claim against the bankrupt tenant for unpaid and future rent would be subject to a statutory cap that might be substantially less than the remaining rent actually owed under the lease, and, even so, our claim for unpaid rent would likely not be paid in full. This shortfall could adversely affect our cash flow and results of operations.

We face risks associated with our Tenants being designated “Prohibited Persons” by the Office of Foreign Assets Control

Pursuant to Executive Order 13224 and other laws, the Office of Foreign Assets Control of the United States Department of the Treasury (“OFAC”) maintains a list of persons designated as terrorists or who are otherwise blocked or banned (“Prohibited Persons”). OFAC regulations and other laws prohibit conducting business or engaging in transactions with Prohibited Persons (the “OFAC Requirements”). Certain of our loan and other agreements require us to comply with OFAC Requirements. We have established a compliance program whereby tenants and others with whom we conduct business are checked against the OFAC list of Prohibited Persons prior to entering into any agreement and on a periodic basis thereafter. Our leases and other agreements require the other party to comply with OFAC Requirements. If a tenant or other party with whom we contract is placed on the OFAC list we may be required by the OFAC Requirements to terminate the lease or other agreement. Any such termination could result in a loss of revenue or a damage claim by the other party that the termination was wrongful.

We may have difficulty selling our properties, which may limit our flexibility.

Large and high-quality office and hotel properties like the ones that we own could be difficult to sell. This may limit our ability to change our portfolio promptly in response to changes in economic or other conditions. In addition, federal tax laws limit our ability to sell properties and this may affect our ability to sell properties without adversely affecting returns to our securityholders. These restrictions reduce our ability to respond to changes in the performance of our investments and could adversely affect our financial condition and results of operations.

 

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Our ability to dispose of some of our properties is constrained by their tax attributes. Properties which we developed and have owned for a significant period of time or which we acquired through tax deferred contribution transactions in exchange for our partnership interests often have low tax bases. If we dispose of these properties outright in taxable transactions, we may be required to distribute a significant amount of the taxable gain to our securityholders under the requirements of the Internal Revenue Code for REITs. In some cases, without incurring additional costs we may be restricted from disposing of properties contributed in exchange for our partnership interests under tax protection agreements with contributors. To dispose of low basis or tax-protected properties efficiently we from time to time use like-kind exchanges, which qualify for non-recognition of taxable gain, but can be difficult to consummate and result in the property for which the disposed assets are exchanged inheriting their low tax bases and other tax attributes (including tax protection covenants).

Our properties face significant competition.

We face significant competition from developers, owners and operators of office properties and other commercial real estate, including sublease space available from our tenants. Substantially all of our properties face competition from similar properties in the same market. This competition may affect our ability to attract and retain tenants and may reduce the rents we are able to charge. These competing properties may have vacancy rates higher than our properties, which may result in their owners being willing to lease available space at lower rates than the space in our properties.

Because we own two hotel properties, we face the risks associated with the hospitality industry.

Because the lease payments we receive under the hotel leases are based on a participation in the gross receipts of the hotels, if the hotels do not generate sufficient receipts, our cash flow would be decreased, which could reduce the amount of cash available for distribution to our securityholders. The following factors, among others, are common to the hotel industry, and may reduce the receipts generated by our hotel properties:

 

   

our hotel properties compete for guests with other hotels, a number of which have greater marketing and financial resources than our hotel-operating business partners;

 

   

if there is an increase in operating costs resulting from inflation and other factors, our hotel-operating business partners may not be able to offset such increase by increasing room rates;

 

   

our hotel properties are subject to the fluctuating and seasonal demands of business travelers and tourism; and

 

   

our hotel properties are subject to general and local economic and social conditions that may affect demand for travel in general, including war and terrorism.

In addition, because our hotel properties are located within two miles of each other in downtown Boston and Cambridge, they are subject to the Boston market’s fluctuations in demand, increases in operating costs and increased competition from additions in supply.

Because of the ownership structure of our two hotel properties, we face potential adverse effects from changes to the applicable tax laws.

We own two hotel properties. However, under the Internal Revenue Code, REITs like Boston Properties, Inc. are not allowed to operate hotels directly or indirectly. Accordingly, we lease our hotel properties to one of our taxable REIT subsidiaries, or TRS. As lessor, we are entitled to a percentage of the gross receipts from the operation of the hotel properties. Marriott International, Inc. manages the hotels under the Marriott name pursuant to a management contract with the TRS as lessee. While the TRS structure allows the economic benefits of ownership to flow to us, the TRS is subject to tax on its income from the operations of the hotels at the federal and state level. In addition, the TRS is subject to detailed tax regulations that affect how it may be capitalized and operated. If the tax laws applicable to TRSs are modified, we may be forced to modify the structure for owning

 

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our hotel properties, and such changes may adversely affect the cash flows from our hotels. In addition, the Internal Revenue Service, the United States Treasury Department and Congress frequently review federal income tax legislation, and we cannot predict whether, when or to what extent new federal tax laws, regulations, interpretations or rulings will be adopted. Any of such actions may prospectively or retroactively modify the tax treatment of the TRS and, therefore, may adversely affect our after-tax returns from our hotel properties.

Compliance or failure to comply with the Americans with Disabilities Act or other safety regulations and requirements could result in substantial costs.

The Americans with Disabilities Act generally requires that public buildings, including office buildings and hotels, be made accessible to disabled persons. Noncompliance could result in the imposition of fines by the federal government or the award of damages to private litigants. If, under the Americans with Disabilities Act, we are required to make substantial alterations and capital expenditures in one or more of our properties, including the removal of access barriers, it could adversely affect our financial condition and results of operations, as well as the amount of cash available for distribution to our securityholders.

Our properties are subject to various federal, state and local regulatory requirements, such as state and local fire and life safety requirements. If we fail to comply with these requirements, we could incur fines or private damage awards. We do not know whether existing requirements will change or whether compliance with future requirements will require significant unanticipated expenditures that will affect our cash flow and results of operations.

Some potential losses are not covered by insurance.

We carry insurance coverage on our properties of types and in amounts and with deductibles that we believe are in line with coverage customarily obtained by owners of similar properties. In response to the uncertainty in the insurance market following the terrorist attacks of September 11, 2001, the Federal Terrorism Risk Insurance Act, or TRIA, was enacted in November 2002 to require regulated insurers to make available coverage for certified acts of terrorism (as defined by the statute) through December 31, 2004, which date was extended to December 31, 2005 by the United States Department of Treasury on June 18, 2004 and which date was further extended to December 31, 2007 by the Terrorism Risk Insurance Extension Act of 2005 (the “TRIA Extension Act”). TRIA expires on December 31, 2007, and we cannot currently anticipate whether it will be extended. Effective as of March 1, 2007, our property insurance program per occurrence limits were increased from $800 million to $900 million, including coverage for “certified” acts of terrorism by TRIA and coverage for “non-certified” acts of terrorism by TRIA up to $500 million per occurrence, and an additional $400 million of coverage for “non-certified” acts of terrorism by TRIA on a per occurrence and annual aggregate basis. We also carry nuclear, biological, chemical and radiological terrorism insurance coverage (“NBCR Coverage”) for “certified” acts of terrorism as defined by TRIA, which is provided by IXP, LLC as a direct insurer. Effective as of March 1, 2007, we extended the NBCR Coverage to March 1, 2008, excluding our Value-Added Fund properties. Effective as of March 1, 2007, the per occurrence limit for NBCR Coverage was increased from $800 million to $900 million. Under TRIA, after the payment of the required deductible and coinsurance the NBCR Coverage is backstopped by the Federal Government if the aggregate industry insured losses resulting from a certified act of terrorism exceed a “program trigger.” Under the TRIA Extension Act (a) the program trigger is $5 million through March 31, 2006, $50 million from April 1, 2006 through December 31, 2006 and $100 million from January 1, 2007 through December 31, 2007 and (b) the coinsurance is 10% through December 31, 2006 and 15% through December 31, 2007. We may elect to terminate the NBCR Coverage if there is a change in our portfolio or for any other reason. In the event TRIA is not extended beyond December 31, 2007 (i) the NBCR coverage provided by IXP will terminate and (ii) we will have some gaps in our coverage for acts of terrorism that would have constituted both “certified” and “non-certified” acts of terrorism had TRIA not expired and we may obtain the right to replace a portion of such coverage. We intend to continue to monitor the scope, nature and cost of available terrorism insurance and maintain insurance in amounts and on terms that are commercially reasonable.

 

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We also currently carry earthquake insurance on our properties located in areas known to be subject to earthquakes in an amount and subject to self-insurance that we believe are commercially reasonable. In addition, this insurance is subject to a deductible in the amount of 5% of the value of the affected property. Specifically, we currently carry earthquake insurance which covers our San Francisco region with a $120 million per occurrence limit and a $120 million annual aggregate limit, $20 million of which is provided by IXP, LLC, as a direct insurer. The amount of our earthquake insurance coverage may not be sufficient to cover losses from earthquakes. We may discontinue earthquake insurance on some or all of our properties in the future if the premiums exceed our estimation of the value of the coverage.

In January 2002, we formed a wholly-owned taxable REIT subsidiary, IXP, Inc., to act as a captive insurance company and be one of the elements of our overall insurance program. On September 27, 2006, IXP, Inc. was merged into IXP, LLC, a wholly owned subsidiary, and all insurance policies issued by IXP, Inc. were cancelled and reissued by IXP, LLC. The term “IXP” refers to IXP, Inc. for the period prior to September 27, 2006 and to IXP, LLC for the period on and subsequent to September 27, 2006. IXP acts as a direct insurer with respect to a portion of our earthquake insurance coverage for our Greater San Francisco properties and our NBCR Coverage for “certified acts of terrorism” under TRIA. Insofar as we own IXP, we are responsible for its liquidity and capital resources, and the accounts of IXP are part of our consolidated financial statements. In particular, if a loss occurs which is covered by our NBCR Coverage but is less than the applicable program trigger under TRIA, IXP would be responsible for the full amount of the loss without any backstop by the Federal Government. If we experience a loss and IXP is required to pay under our insurance policy, we would ultimately record the loss to the extent of IXP’s required payment. Therefore, insurance coverage provided by IXP should not be considered as the equivalent of third-party insurance, but rather as a modified form of self-insurance.

We continue to monitor the state of the insurance market in general, and the scope and costs of coverage for acts of terrorism in particular, but we cannot anticipate what coverage will be available on commercially reasonable terms in future policy years. There are other types of losses, such as from wars or the presence of mold at our properties, for which we cannot obtain insurance at all or at a reasonable cost. With respect to such losses and losses from acts of terrorism, earthquakes or other catastrophic events, if we experience a loss that is uninsured or that exceeds policy limits, we could lose the capital invested in the damaged properties, as well as the anticipated future revenues from those properties. Depending on the specific circumstances of each affected property, it is possible that we could be liable for mortgage indebtedness or other obligations related to the property. Any such loss could materially and adversely affect our business and financial condition and results of operations.

Actual or threatened terrorist attacks may adversely affect our ability to generate revenues and the value of our properties.

We have significant investments in large metropolitan markets that have been or may be in the future the targets of actual or threatened terrorism attacks, including midtown Manhattan, Washington, D.C., Boston and San Francisco. As a result, some tenants in these markets may choose to relocate their businesses to other markets or to lower-profile office buildings within these markets that may be perceived to be less likely targets of future terrorist activity. This could result in an overall decrease in the demand for office space in these markets generally or in our properties in particular, which could increase vacancies in our properties or necessitate that we lease our properties on less favorable terms or both. In addition, future terrorist attacks in these markets could directly or indirectly damage our properties, both physically and financially, or cause losses that materially exceed our insurance coverage. As a result of the foregoing, our ability to generate revenues and the value of our properties could decline materially. See also “—Some potential losses are not covered by insurance.

 

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Potential liability for environmental contamination could result in substantial costs.

Under federal, state and local environmental laws, ordinances and regulations, we may be required to investigate and clean up the effects of releases of hazardous or toxic substances or petroleum products at our properties simply because of our current or past ownership or operation of the real estate. If unidentified environmental problems arise, we may have to make substantial payments, which could adversely affect our cash flow and our ability to make distributions to our securityholders, because:

 

   

as owner or operator we may have to pay for property damage and for investigation and clean-up costs incurred in connection with the contamination;

 

   

the law typically imposes clean-up responsibility and liability regardless of whether the owner or operator knew of or caused the contamination;

 

   

even if more than one person may be responsible for the contamination, each person who shares legal liability under the environmental laws may be held responsible for all of the clean-up costs; and

 

   

governmental entities and third parties may sue the owner or operator of a contaminated site for damages and costs.

These costs could be substantial and in extreme cases could exceed the amount of our insurance or the value of the contaminated property. We currently carry environmental insurance in an amount and subject to deductibles that we believe are commercially reasonable. Specifically, we carry a pollution legal liability policy with a $10 million limit per incident and a policy aggregate limit of $25 million. The presence of hazardous or toxic substances or petroleum products or the failure to properly remediate contamination may materially and adversely affect our ability to borrow against, sell or rent an affected property. In addition, applicable environmental laws create liens on contaminated sites in favor of the government for damages and costs it incurs in connection with a contamination. Changes in laws increasing the potential liability for environmental conditions existing at our properties, or increasing the restrictions on the handling, storage or discharge of hazardous or toxic substances or petroleum products or other actions may result in significant unanticipated expenditures.

Environmental laws also govern the presence, maintenance and removal of asbestos. Such laws require that owners or operators of buildings containing asbestos:

 

   

properly manage and maintain the asbestos;

 

   

notify and train those who may come into contact with asbestos; and

 

   

undertake special precautions, including removal or other abatement, if asbestos would be disturbed during renovation or demolition of a building.

Such laws may impose fines and penalties on building owners or operators who fail to comply with these requirements and may allow third parties to seek recovery from owners or operators for personal injury associated with exposure to asbestos fibers.

Some of our properties are located in urban and previously developed areas where fill or current or historic industrial uses of the areas have caused site contamination. It is our policy to retain independent environmental consultants to conduct Phase I environmental site assessments and asbestos surveys with respect to our acquisition of properties. These assessments generally include a visual inspection of the properties and the surrounding areas, an examination of current and historical uses of the properties and the surrounding areas and a review of relevant state, federal and historical documents, but do not involve invasive techniques such as soil and ground water sampling. Where appropriate, on a property-by-property basis, our practice is to have these consultants conduct additional testing, including sampling for asbestos, for lead in drinking water, for soil contamination where underground storage tanks are or were located or where other past site usage creates a potential environmental problem, and for contamination in groundwater. Even though these environmental assessments are conducted, there is still the risk that:

 

   

the environmental assessments and updates did not identify all potential environmental liabilities;

 

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a prior owner created a material environmental condition that is not known to us or the independent consultants preparing the assessments;

 

   

new environmental liabilities have developed since the environmental assessments were conducted; and

 

   

future uses or conditions such as changes in applicable environmental laws and regulations could result in environmental liability for us.

Inquiries about indoor air quality may necessitate special investigation and, depending on the results, remediation beyond our regular indoor air quality testing and maintenance programs. Indoor air quality issues can stem from inadequate ventilation, chemical contaminants from indoor or outdoor sources, and biological contaminants such as molds, pollen, viruses and bacteria. Indoor exposure to chemical or biological contaminants above certain levels can be alleged to be connected to allergic reactions or other health effects and symptoms in susceptible individuals. If these conditions were to occur at one of our properties, we may need to undertake a targeted remediation program, including without limitation, steps to increase indoor ventilation rates and eliminate sources of contaminants. Such remediation programs could be costly, necessitate the temporary relocation of some or all of the property’s tenants or require rehabilitation of the affected property.

We face risks associated with the use of debt to fund acquisitions and developments, including refinancing risk.

We are subject to the risks normally associated with debt financing, including the risk that our cash flow will be insufficient to meet required payments of principal and interest. We anticipate that only a small portion of the principal of our debt will be repaid prior to maturity. Therefore, we are likely to need to refinance at least a portion of our outstanding debt as it matures. There is a risk that we may not be able to refinance existing debt or that the terms of any refinancing will not be as favorable as the terms of our existing debt. If principal payments due at maturity cannot be refinanced, extended or repaid with proceeds from other sources, such as new equity capital, our cash flow may not be sufficient to repay all maturing debt in years when significant “balloon” payments come due.

We have agreements with a number of our limited partners who contributed properties in exchange for partnership interests that require us to maintain for specified periods of time secured debt on certain of our assets and/or allocate partnership debt to such limited partners to enable them to continue to defer recognition of their taxable gain with respect to the contributed property. These tax protection and debt allocation agreements may restrict our ability to repay or refinance debt.

An increase in interest rates would increase our interest costs on variable rate debt and could adversely impact our ability to refinance existing debt or sell assets.

As of December 31, 2006, we had approximately $711 million of indebtedness that bears interest at variable rates, and we may incur more of such indebtedness in the future. Accordingly, if interest rates increase, so will our interest costs, which could adversely affect our cash flow and our ability to pay principal and interest on our debt and our ability to make distributions to our securityholders. Further, rising interest rates could limit our ability to refinance existing debt when it matures. In the past, we have entered into interest rate swap agreements and other interest rate hedging contracts, including interest rate caps and we may in the future enter into similar agreements, including swaps, caps, floors and other interest rate hedging contracts. While these agreements are intended to lessen the impact of rising interest rates on us, they also expose us to the risk that the other parties to the agreements will not perform, the agreements will be unenforceable and the underlying transactions will fail to qualify as highly-effective cash flow hedges under SFAS No. 133, “Accounting for Derivative Instruments and Hedging Activities, as amended” (See Note 6 to the Consolidated Financial Statements). In addition, an increase in interest rates could decrease the amount third-parties are willing to pay for our assets, thereby limiting our ability to change our portfolio promptly in response to changes in economic or other conditions.

 

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Covenants in our debt agreements could adversely affect our financial condition.

The mortgages on our properties contain customary covenants such as those that limit our ability, without the prior consent of the lender, to further mortgage the applicable property or to discontinue insurance coverage. Our unsecured credit facility, unsecured debt securities and secured loans contain customary restrictions, requirements and other limitations on our ability to incur indebtedness, including total debt to asset ratios, secured debt to total asset ratios, debt service coverage ratios and minimum ratios of unencumbered assets to unsecured debt, which we must maintain. Our continued ability to borrow under our credit facilities is subject to compliance with our financial and other covenants. In addition, our failure to comply with such covenants could cause a default under the applicable debt agreement, and we may then be required to repay such debt with capital from other sources. Under those circumstances, other sources of capital may not be available to us, or be available only on unattractive terms. Additionally, in the future our ability to satisfy current or prospective lenders’ insurance requirements may be adversely affected if lenders generally insist upon greater insurance coverage against acts of terrorism or losses resulting from earthquakes than is available to us in the marketplace or on commercially reasonable terms, particularly with regard to terrorism if TRIA is not extended beyond December 31, 2007.

We rely on debt financing, including borrowings under our unsecured credit facility, issuances of unsecured debt securities and debt secured by individual properties, to finance our acquisition and development activities and for working capital. If we are unable to obtain debt financing from these or other sources, or to refinance existing indebtedness upon maturity, our financial condition and results of operations would likely be adversely affected. If we breach covenants in our debt agreements, the lenders can declare a default and, if the debt is secured, can take possession of the property securing the defaulted loan. In addition, our unsecured debt agreements contain specific cross-default provisions with respect to specified other indebtedness, giving the unsecured lenders the right to declare a default if we are in default under other loans in some circumstances. Defaults under our debt agreements could materially and adversely affect our financial condition and results of operations.

Our degree of leverage could limit our ability to obtain additional financing or affect the market price of our common stock or debt securities.

On February 23, 2007, we had approximately $5.5 billion in total indebtedness outstanding on a consolidated basis (i.e., excluding unconsolidated joint venture debt). Debt to market capitalization ratio, which measures total debt as a percentage of the aggregate of total debt plus the market value of outstanding equity securities, is often used by analysts to gauge leverage for equity REITs such as Boston Properties, Inc. Our market value is calculated using the price per share of Boston Properties, Inc.’s common stock. Using the closing stock price of $122.65 per share of the common stock of Boston Properties, Inc. on February 23, 2007, multiplied by the sum of (1) the actual aggregate number of outstanding common units (including common units held by Boston Properties, Inc.), (2) the number of common units issuable upon conversion of all outstanding preferred units and (3) the number of common units issuable upon conversion of all outstanding LTIP units assuming all conditions have been met for conversion of the LTIP units, our debt to total market capitalization ratio was approximately 24.06% as of February 23, 2007.

Our degree of leverage could affect our ability to obtain additional financing for working capital, capital expenditures, acquisitions, development or other general corporate purposes. Our senior unsecured debt is currently rated investment grade by the three major rating agencies. However, there can be no assurance that we will be able to maintain this rating, and in the event our senior debt is downgraded from its current rating, we would likely incur higher borrowing costs and/or difficulty in obtaining additional financing. Our degree of leverage could also make us more vulnerable to a downturn in business or the economy generally. There is a risk that changes in our debt to market capitalization ratio, which is in part a function of the stock price of Boston Properties, Inc., or our ratio of indebtedness to other measures of asset value used by financial analysts may have an adverse effect on the market price of our equity or debt securities.

 

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Failure of Boston Properties, Inc. to qualify as a REIT would have a material adverse effect on BPLP.

We, in general, and the holders of our securities, in particular, must rely on Boston Properties, Inc., as our general partner, to manage our affairs and business. Boston Properties, Inc. is subject to certain risks that may affect its financial and other conditions, including particularly adverse consequences if it fails to qualify as a REIT for federal income tax purposes. While Boston Properties, Inc. intends to operate in a manner that will allow it to continue to qualify as a REIT, we cannot assure you that it will remain qualified as such in the future. This is because qualification as a REIT involves the application of highly technical and complex provisions of the Internal Revenue Code as to which there are only limited judicial and administrative interpretations, and involves the determination of facts and circumstances not entirely within our control. In addition, future legislation, new regulation, administrative interpretations or court decisions may significantly change the tax laws or the application of the tax laws with respect to qualification as a REIT for federal income tax purposes or the federal income tax consequences of such qualification, if Boston Properties, Inc. fails to qualify as a REIT, it will face serious tax consequences which will directly and adversely impact us and may substantially reduce the funds available for payment of distributions to our securityholders, and wit will be barred from qualifying as a REIT for the four years following such failure.

In order to maintain the REIT status of our general partner, Boston Properties, Inc., we may be forced to borrow funds during unfavorable market conditions.

In order to maintain the REIT status of our general partner, Boston Properties, Inc., we may need to borrow funds on a short-term basis to meet the REIT distribution requirements, even if the then-prevailing market conditions are not favorable for these borrowings. To qualify as a REIT, Boston Properties, Inc. generally must distribute to its stockholders at least 90% of its net taxable income each year, excluding capital gains. In addition, Boston Properties, Inc. will be subject to a 4% nondeductible excise tax on the amount, if any, by which dividends paid by it in any calendar year are less than the sum of 85% of our ordinary income, 95% of its capital gain net income and 100% of its undistributed income from prior years. Boston Properties, Inc. may need short-term debt or long-term debt or proceeds from asset sales, creation of joint ventures or sales of common stock to fund required distributions as a result of differences in timing between the actual receipt of income and the recognition of income for federal income tax purposes, or the effect of non-deductible capital expenditures, the creation of reserves or required debt or amortization payments. The inability of our cash flows to cover our distribution requirements could have an adverse impact on our ability to raise short-and long-term debt or sell equity securities in order to fund distributions required to maintain Boston Properties, Inc.’s REIT status.

Limits on changes in control of Boston Properties, Inc. may discourage takeover attempts beneficial to our securityholders.

Provisions in Boston Properties, Inc.’s certificate of incorporation and bylaws, its shareholder rights agreement and provisions in our agreement of limited partnership, as well as provisions of the Internal Revenue Code and Delaware corporate law, may:

 

   

delay or prevent a change of control over Boston Properties, Inc. or a tender offer, even if such action might be beneficial to our securityholders or Boston Properties, Inc.’s; and

 

   

limit Boston Properties, Inc.’s stockholders’ opportunity to receive a potential premium for their shares of common stock over then-prevailing market prices.

Stock Ownership Limit

To facilitate the maintenance of Boston Properties, Inc.’s qualification as a REIT and to otherwise address concerns relating to concentration of capital stock ownership, its certificate of incorporation generally prohibits ownership, directly, indirectly or beneficially, by any single stockholder of more than 6.6% of the number of outstanding shares of any class or series of its common stock. We refer to this limitation as the “ownership limit.” The Board of Directors of Boston Properties, Inc. may waive, in its sole discretion, or modify the

 

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ownership limit with respect to one or more persons if it is satisfied that ownership in excess of this limit will not jeopardize our status as a REIT for federal income tax purposes. In addition, under Boston Properties, Inc.’s certificate of incorporation each of Mortimer B. Zuckerman and Edward H. Linde, along with their respective families and affiliates, as well as, in general, pension plans and mutual funds, may actually and beneficially own up to 15% of the number of outstanding shares of any class or series of its equity common stock. Shares of Boston Properties, Inc. owned in violation of the ownership limit will be subject to the loss of rights to distributions and voting and other penalties. The ownership limit may have the effect of inhibiting or impeding a change in control.

Agreement of Limited Partnership of BPLP

We have agreed in our agreement of limited partnership that Boston Properties, Inc., our general partner, will not engage in specified extraordinary transactions, including, among others, business combinations, unless limited partners other than Boston Properties, Inc. receive, or have the opportunity to receive, either (1) the same consideration for their partnership interests as holders of Boston Properties, Inc.’s common stock in the transaction or (2) limited partnership units that, among other things, would entitle the holders, upon redemption of these units, to receive shares of common equity of a publicly traded company or the same consideration as holders of Boston Properties, Inc.’s common stock received in the transaction. If these limited partners would not receive such consideration, Boston Properties, Inc. cannot engage in the transaction unless limited partners holding at least 75% of the common units of limited partnership interest, other than those held by Boston Properties, Inc. or its affiliates, consent to the transaction. In addition, we have agreed in our agreement of limited partnership that Boston Properties, Inc., as our general partner, will not complete specified extraordinary transactions, including among others, business combinations, in which it received the approval of its common stockholders unless (1) limited partners holding at least 75% of the common units other than those held by Boston Properties, Inc. or its affiliates, consent to the transaction or (2) the limited partners are also allowed to vote and the transaction would have been approved had these limited partners been able to vote as common stockholders on the transaction. Therefore, if Boston Properties, Inc.’s common stockholders approve a specified extraordinary transaction, the partnership agreement requires the following before we can complete the transaction:

 

   

our securityholders must vote on the matter;

 

   

Boston Properties, Inc. must vote its limited partnership interests in the same proportion as its stockholders voted on the transaction; and

 

   

the result of the vote of our securityholders must be such that had such vote been a vote of stockholders of Boston Properties, Inc., the business combination would have been approved.

With respect to specified extraordinary transactions, Boston Properties, Inc., as our general partner, has agreed in our partnership agreement to use its commercially reasonable efforts to structure such a transaction to avoid causing our limited partners to recognize gain for federal income tax purposes by virtue of the occurrence of or their participation in such a transaction.

As a result of these provisions, a potential acquirer may be deterred from making an acquisition proposal, and Boston Properties, Inc. may be prohibited by contract from engaging in a proposed extraordinary transaction, including a proposed business combination, even though its stockholders approve of the transaction.

Shareholder Rights Plan

Boston Properties, Inc. has a shareholder rights plan. Under the terms of this plan, Boston Properties, Inc. can in effect prevent a person or group from acquiring more than 15% of the outstanding shares of its common stock because, unless it approves of the acquisition, after the person acquires more than 15% of the outstanding common stock, of Boston Properties, Inc., all other stockholders will have the right to purchase securities from Boston Properties, Inc. at a price that is less than their then fair market value. This would substantially reduce the

 

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value and influence of the stock owned by the acquiring person. The Board of Directors of Boston Properties, Inc. can prevent the plan from operating by approving the transaction in advance, which gives Boston Properties, Inc. significant power to approve or disapprove of the efforts of a person or group to acquire a large interest in Boston Properties, Inc.

We may change our policies without obtaining the approval of our securityholders.

Our operating and financial policies, including our policies with respect to acquisitions of real estate, growth, operations, indebtedness, capitalization and distributions, are exclusively determined by our sole general partner, Boston Properties, Inc., acting through its Board of Directors. Accordingly, our securityholders do not control these policies.

Our success depends on key personnel whose continued service is not guaranteed.

We depend on the efforts of key personnel, particularly Mortimer B. Zuckerman, Chairman of the Board of Directors of Boston Properties, Inc., and Edward H. Linde, the President and Chief Executive Officer of Boston Properties, Inc. Among the reasons that Messrs. Zuckerman and Linde are important to our success is that each has a national reputation, which attracts business and investment opportunities and assists us in negotiations with lenders. If we lost their services, our relationships with lenders, potential tenants and industry personnel could diminish. Mr. Zuckerman has substantial outside business interests that could interfere with his ability to devote his full time to our business and affairs.

The three Executive Vice Presidents and five Regional Managers of Boston Properties, Inc. also have strong reputations. Their reputations aid us in identifying opportunities, having opportunities brought to us, and negotiating with tenants and build-to-suit prospects. While we believe that we could find replacements for these key personnel, the loss of their services could materially and adversely affect our operations because of diminished relationships with lenders, prospective tenants and industry personnel.

Conflicts of interest exist with holders of our limited partnership interests.

Sales of properties and repayment of related indebtedness will have different effects on certain of our securityholders.

Some holders of our limited partnership interests, including Messrs. Zuckerman and Linde, would incur adverse tax consequences upon the sale of certain of our properties and on the repayment of related debt which differ from the tax consequences to us. Consequently, such holders of our limited partnership interests may have different objectives regarding the appropriate pricing and timing of any such sale or repayment of debt. While Boston Properties, Inc. has exclusive authority under our limited partnership agreement to determine when to refinance or repay debt or whether, when, and on what terms to sell a property, subject, in the case of certain properties, to the contractual commitments described below, any such decision would require the approval of the Board of Directors of Boston Properties, Inc. While the Board of Directors of Boston Properties, Inc. has a policy with respect to these matters, as directors and executive officers of Boston Properties, Inc., Messrs. Zuckerman and Linde could exercise their influence in a manner inconsistent with the interests of some of our stockholders, including in a manner which could prevent completion of a sale of a property or the repayment of indebtedness.

Agreement not to sell some properties.

Under the terms of our limited partnership agreement, we have agreed not to sell or otherwise transfer some of our properties, prior to specified dates, in any transaction that would trigger taxable income, without first obtaining the consent of Messrs. Zuckerman and Linde. However, we are not required to obtain their consent if, during the applicable period, each of them does not hold at least 30% of his original partnership interests, or if those properties are transferred in a nontaxable transaction. In addition, we have entered into similar agreements with respect to other properties that we have acquired in exchange for partnership interests. Pursuant to those

 

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agreements, we are responsible for the reimbursement of certain tax-related costs to the prior owners if the subject properties are sold in a taxable sale. Under most of these agreements, our obligations to the prior owners are limited in time and only apply to actual damages suffered. As of December 31, 2006, there were a total of 25 wholly-owned properties subject to these restrictions, and those properties are estimated to have accounted for approximately 32% of our total revenue for the year ended December 31, 2006.

We also have entered into agreements providing prior owners of properties with the right to guarantee specific amounts of indebtedness and, in the event that the specific indebtedness they guarantee is repaid or reduced, additional and/or substitute indebtedness. These agreements may hinder actions that we may otherwise desire to take to repay or refinance guaranteed indebtedness because we would be required to make payments to the beneficiaries of such agreements if we violate these agreements.

Messrs. Zuckerman and Linde will continue to engage in other activities.

Messrs. Zuckerman and Linde have a broad and varied range of investment interests. Either one could acquire an interest in a company which is not currently involved in real estate investment activities but which may acquire real property in the future. However, pursuant to each of their employment agreements, Messrs. Zuckerman and Linde will not, in general, have management control over such companies and, therefore, they may not be able to prevent one or more of such companies from engaging in activities that are in competition with our activities.

We did not obtain new owner’s title insurance policies in connection with properties acquired during Boston Properties, Inc.’s initial public offering.

We acquired many of our properties from our predecessors at the completion of the initial public offering of Boston Properties, Inc. in June 1997. Before we acquired these properties, each of them was insured by a title insurance policy. We did not obtain new owner’s title insurance policies in connection with the acquisition of these properties. However, to the extent we have financed properties after acquiring them in connection with the initial public offering of Boston Properties, Inc. we have obtained new title insurance policies. Nevertheless, because in many instances we acquired these properties indirectly by acquiring ownership of that entity that owned the property and those owners remain in existence as our subsidiaries, some of these title insurance policies may continue to benefit us. Many of these title insurance policies may be for amounts less than the current or future values of the applicable properties. If there was a title defect related to any of these properties, or to any of the properties acquired at the time of the initial public offering of Boston Properties, Inc., that is no longer covered by a title insurance policy, we could lose both our capital invested in and our anticipated profits from such property. We have obtained title insurance policies for all properties that we have acquired after the initial public offering of Boston Properties, Inc., however, these policies may be for amounts less than the current or future values of the applicable properties.

We face possible adverse changes in tax laws.

From time to time changes in state and local tax laws or regulations are enacted, which may result in an increase in our tax liability. A shortfall in tax revenues for states and municipalities in which we operate may lead to an increase in the frequency and size of such changes. If such changes occur, we may be required to pay additional taxes on our assets or income. These increased tax costs could adversely affect our financial condition and results of operations and our ability to make distributions to our securityholders.

We face possible state and local tax audits.

Because Boston Properties, Inc. is organized and qualifies as a REIT, it is generally not subject to federal income taxes, but is subject to certain state and local taxes. In the normal course of business, certain entities through which we own real estate either have undergone, or are currently undergoing, tax audits. Although we

 

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believe that we have substantial arguments in favor of our positions in the ongoing audits, in some instances there is no controlling precedent or interpretive guidance on the specific point at issue. Collectively, tax deficiency notices received to date from the jurisdictions conducting the ongoing audits have not been material. However, there can be no assurance that future audits will not occur with increased frequency or that the ultimate result of such audits will not have a material adverse effect on our results of operations.

 

Item 1B. Unresolved Staff Comments.

None.

 

Item 2. Properties

At December 31, 2006, our portfolio consisted of 131 properties totaling 43.4 million net rentable square feet. Our properties consisted of (1) 127 office properties, comprised of 109 Class A office buildings, including six properties under construction, and 18 properties that support both office and technical uses, (2) two retail properties and (3) two hotels. In addition, we own or control 524.3 acres of land for future development. The table set forth below shows information relating to the properties we owned, or in which we had an ownership interest, at December 31, 2006. Information relating to properties owned by the Value-Added Fund is not included in our portfolio information tables or any other portfolio level statistics because the Value-Added Fund invests in assets within our existing markets that have deficiencies in property characteristics which provide an opportunity to create value through repositioning, refurbishment or renovation. We therefore believe including such information in our portfolio tables and statistics would render the portfolio information less useful to investors. Information relating to the Value-Added Fund is set forth below separately.

 

Properties

 

Location

  % Leased     Number of
Buildings
  Net Rentable
Square Feet

Class A Office

       

399 Park Avenue

  New York, NY   99.8 %   1   1,697,564

Citigroup Center

  New York, NY   99.9 %   1   1,565,895

Times Square Tower

  New York, NY   100.0 %   1   1,238,787

800 Boylston Street at The Prudential Center

  Boston, MA   91.4 %   1   1,182,537

5 Times Square (Held for Sale)(1)

  New York, NY   100.0 %   1   1,101,779

599 Lexington Avenue

  New York, NY   100.0 %   1   1,018,291

Embarcadero Center Four

  San Francisco, CA   90.6 %   1   934,637

111 Huntington Avenue at The Prudential Center

  Boston, MA   100.0 %   1   857,386

Embarcadero Center One

  San Francisco, CA   76.1 %   1   822,758

Embarcadero Center Three

  San Francisco, CA   93.4 %   1   770,972

Embarcadero Center Two

  San Francisco, CA   88.2 %   1   770,231

Democracy Center

  Bethesda, MD   83.7 %   3   684,968

Capital Gallery

  Washington, D.C.   91.8 %   1   614,312

Metropolitan Square (51% ownership)

  Washington, D.C.   99.9 %   1   586,478

3200 Zanker Road

  San Jose, CA   100.0 %   4   543,900

901 New York Avenue (25% ownership)

  Washington, D.C.   99.4 %   1   539,229

Reservoir Place

  Waltham, MA   87.3 %   1   526,998

101 Huntington Avenue at The Prudential Center

  Boston, MA   100.0 %   1   505,939

601 and 651 Gateway Boulevard

  South San Francisco, CA   91.9 %   2   505,813

One and Two Reston Overlook

  Reston, VA   100.0 %   2   447,300

Two Freedom Square

  Reston, VA   100.0 %   1   421,676

One Freedom Square

  Reston, VA   100.0 %   1   414,207

One Tower Center

  East Brunswick, NJ   64.9 %   1   412,224

 

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Table of Contents

Properties

 

Location

  % Leased     Number of
Buildings
  Net Rentable
Square Feet

Market Square North (50% ownership)

  Washington, D.C.   100.0 %   1   401,279

140 Kendrick Street

  Needham, MA   100.0 %   3   380,987

One and Two Discovery Square

  Reston, VA   100.0 %   2   367,018

Orbital Science Campus

  Dulles, VA   100.0 %   3   337,228

1333 New Hampshire Avenue

  Washington, D.C.   100.0 %   1   315,371

Waltham Weston Corporate Center

  Waltham, MA   98.1 %   1   306,789

Prospect Place

  Waltham, MA   68.7 %   1   298,893

12310 Sunrise Valley

  Reston, VA   100.0 %   1   263,870

Reston Corporate Center

  Reston, VA   100.0 %   2   261,046

Quorum Office Park

  Chelmsford, MA   100.0 %   2   259,918

New Dominion Technology Park, Building Two

  Herndon, VA   100.0 %   1   257,400

611 Gateway Boulevard

  South San Francisco, CA   100.0 %   1   256,302

12300 Sunrise Valley

  Reston, VA   100.0 %   1   255,244

1330 Connecticut Avenue

  Washington, D.C.   100.0 %   1   252,136

200 West Street

  Waltham, MA   92.1 %   1   248,311

500 E Street

  Washington, D.C.   100.0 %   1   246,057

Five Cambridge Center

  Cambridge, MA   63.2 %   1   237,752

New Dominion Technology Park, Building One

  Herndon, VA   100.0 %   1   235,201

510 Carnegie Center

  Princeton, NJ   100.0 %   1   234,160

One Cambridge Center

  Cambridge, MA   87.3 %   1   215,385

Sumner Square Office

  Washington, D.C.   100.0 %   1   208,665

Four Cambridge Center

  Cambridge, MA   66.0 %   1   198,295

University Place

  Cambridge, MA   100.0 %   1   195,282

1301 New York Avenue

  Washington, D.C.   100.0 %   1   188,358

12290 Sunrise Valley

  Reston, VA   100.0 %   1   182,424

2600 Tower Oaks Boulevard

  Rockville, MD   100.0 %   1   178,887

Eight Cambridge Center

  Cambridge, MA   100.0 %   1   177,226

Newport Office Park

  Quincy, MA   97.4 %   1   171,957

Lexington Office Park

  Lexington, MA   96.4 %   2   166,689

210 Carnegie Center

  Princeton, NJ   74.5 %   1   161,776

206 Carnegie Center

  Princeton, NJ   100.0 %   1   161,763

191 Spring Street

  Lexington, MA   100.0 %   1   158,900

303 Almaden

  San Jose, CA   100.0 %   1   157,537

10 & 20 Burlington Mall Road

  Burlington, MA   91.3 %   2   153,048

Ten Cambridge Center

  Cambridge, MA   100.0 %   1   152,664

214 Carnegie Center

  Princeton, NJ   76.8 %   1   150,774

212 Carnegie Center

  Princeton, NJ   97.3 %   1   149,398

506 Carnegie Center

  Princeton, NJ   100.0 %   1   136,213

508 Carnegie Center

  Princeton, NJ   100.0 %   1   131,085

Waltham Office Center

  Waltham, MA   79.1 %   3   129,041

202 Carnegie Center

  Princeton, NJ   74.5 %   1   128,705

101 Carnegie Center

  Princeton, NJ   100.0 %   1   123,659

Montvale Center (75% ownership)

  Gaithersburg, MD   90.8 %   1   122,737

504 Carnegie Center

  Princeton, NJ   100.0 %   1   121,990

91 Hartwell Avenue

  Lexington, MA   88.3 %   1   121,425

40 Shattuck Road

  Andover, MA   95.6 %   1   120,000

502 Carnegie Center

  Princeton, NJ   100.0 %   1   116,855

Three Cambridge Center

  Cambridge, MA   100.0 %   1   108,152

 

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Table of Contents

Properties

 

Location

  % Leased     Number of
Buildings
  Net Rentable
Square Feet

104 Carnegie Center

  Princeton, NJ   89.5 %   1   102,830

201 Spring Street

  Lexington, MA   100.0 %   1   102,500

Bedford Office Park

  Bedford, MA   16.3 %   1   89,961

33 Hayden Avenue

  Lexington, MA   100.0 %   1   80,128

Eleven Cambridge Center

  Cambridge, MA   100.0 %   1   79,616

Reservoir Place North

  Waltham, MA   97.5 %   1   73,258

105 Carnegie Center

  Princeton, NJ   81.1 %   1   70,029

32 Hartwell Avenue

  Lexington, MA   100.0 %   1   69,154

302 Carnegie Center

  Princeton, NJ   100.0 %   1   64,726

195 West Street

  Waltham, MA   100.0 %   1   63,500

100 Hayden Avenue

  Lexington, MA   100.0 %   1   55,924

181 Spring Street

  Lexington, MA   89.8 %   1   55,793

211 Carnegie Center

  Princeton, NJ   100.0 %   1   47,025

92 Hayden Avenue

  Lexington, MA   100.0 %   1   31,100

201 Carnegie Center

  Princeton, NJ   100.0 %   —     6,500
               

Subtotal for Class A Office Properties

    94.7 %   103   29,059,777
               

Retail

       

Shops at The Prudential Center

  Boston, MA   95.9 %   1   500,135

Shaws Supermarket at The Prudential Center

  Boston, MA   100.0 %   1   57,235
               

Subtotal for Retail Properties

    96.3 %   2   557,370
               

Office/Technical Properties

       

Bedford Office Park

  Bedford, MA   33.9 %   2   383,704

Seven Cambridge Center

  Cambridge, MA   100.0 %   1   231,028

Broad Run Business Park, Building E

  Dulles, VA   100.0 %   1   127,070

7601 Boston Boulevard

  Springfield, VA   100.0 %   1   103,750

7435 Boston Boulevard

  Springfield, VA   100.0 %   1   103,557

8000 Grainger Court

  Springfield, VA   100.0 %   1   88,775

7500 Boston Boulevard

  Springfield, VA   100.0 %   1   79,971

7501 Boston Boulevard

  Springfield, VA   100.0 %   1   75,756

Fourteen Cambridge Center

  Cambridge, MA   100.0 %   1   67,362

164 Lexington Road

  Billerica, MA   100.0 %   1   64,140

7450 Boston Boulevard

  Springfield, VA   100.0 %   1   62,402

7374 Boston Boulevard

  Springfield, VA   100.0 %   1   57,321

8000 Corporate Court

  Springfield, VA   100.0 %   1   52,539

7451 Boston Boulevard

  Springfield, VA   100.0 %   1   47,001

7300 Boston Boulevard

  Springfield, VA   100.0 %   1   32,000

17 Hartwell Avenue

  Lexington, MA   100.0 %   1   30,000

7375 Boston Boulevard

  Springfield, VA   100.0 %   1   26,865
               

Subtotal for Office/Technical Properties

    84.5 %   18   1,633,241
               

Hotel Properties

       

Long Wharf Marriott

  Boston, MA   83.9 %(2)   1   420,000

Cambridge Center Marriott

  Cambridge, MA   75.1 %(2)   1   330,400
               

Subtotal for Hotel Properties

    79.3 %   2   750,400
               

Structured Parking

    n/a     —     10,020,288
               

Subtotal for In-Service Properties

    94.2 %   125   42,021,076
               

 

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Table of Contents

Properties

 

Location

  % Leased     Number of
Buildings
  Net Rentable
Square Feet

Properties Under Construction

       

South of Market

  Reston, VA   23.7 %(3)   3   652,000

505 9th Street (50% ownership)

  Washington, D.C.   86.6 %(3)   1   323,000

77 Fourth Avenue

  Waltham, MA   0 %   1   210,000

One Preserve Parkway

  Rockville, MD   0 %   1   183,000

Wisconsin Place- Infrastructure
(23.89% ownership)

  Chevy Chase, MD   n/a     —     —  
               

Subtotal for Properties Under Construction

    31.7 %   6   1,368,000
               

Total Portfolio

      131   43,389,076
           

(1) Property was sold on February 15, 2007. Subtotal percentage leased for In-Service Properties excluding 5 Times Square was 93.9% as of December 31, 2006.
(2) Represents the weighted-average room occupancy for the year ended December 31, 2006. Note that these amounts are not included in the calculation of the Total Portfolio occupancy rate for In-Service Properties as of December 31, 2006.
(3) Represents percentage leased as of February 23, 2007.

The following table shows information relating to properties owned through the Value-Added Fund as of December 31, 2006:

 

Property

  

Location

   % Leased     Number of
Buildings
   Net Rentable
Square Feet

Worldgate Plaza

   Herndon, VA    75.0 %       4    322,328

One and Two Circle Star Way

   San Carlos, CA    88.0 %   2    205,994

300 Billerica Road

   Chelmsford, MA    100.0 %   1    110,882
                  

Total Value-Added Fund

      83.5 %   7    639,204
                  

Top 20 Tenants by Square Feet

 

   

Tenant

   Square Feet    

% of In-Service

Portfolio

 
1  

U.S. Government

   1,624,697 (1)   5.20 %
2  

Lockheed Martin

   1,294,292     4.14 %
3  

Ernst & Young

   1,164,969 (2)   3.73 %
4  

Citibank NA

   1,142,009     3.65 %
5  

Genentech

   553,799     1.77 %
6  

Shearman & Sterling

   540,658     1.73 %
7  

Procter & Gamble

   484,051     1.55 %
8  

Kirkland & Ellis

   473,161 (3)   1.51 %
9  

Lehman Brothers

   436,723     1.40 %
10  

Parametric Technology

   380,987     1.22 %
11  

Washington Group International

   365,245     1.17 %
12  

Finnegan Henderson Farabow

   349,146 (4)   1.12 %
13  

Ann Taylor

   338,942     1.08 %
14  

Orbital Sciences

   337,228     1.08 %
15  

Northrop Grumman

   327,677     1.05 %
16  

MIT

   313,048     1.00 %
17  

Accenture

   299,022     0.96 %
18  

Bingham McCutchen

   291,415     0.93 %
19  

Akin Gump Strauss Hauer & Feld

   290,132     0.93 %
20  

Biogen Idec

   282,464     0.90 %
 

Total % of Portfolio Square Feet

     36.13 %

 

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(1) Includes 96,660 square feet of space in two properties in which Boston Properties has a 51% and 50% interest.
(2) Includes 1,064,939 square feet in 5 Times Square, which was sold on February 15, 2007.
(3) Includes 218,134 square feet of space in a property in which Boston Properties has a 51% interest.
(4) Includes 251,941 square feet of space in a property in which Boston Properties has a 25% interest.

Lease Expirations

 

  Year of

    Lease

Expiration

   Rentable
Square Feet
Subject to
Expiring
Leases
  

Current
Annualized (1)
Contractual
Rent Under
Expiring

Leases

   Current
Annualized (1)
Contractual
Rent Under
Expiring
Leases p.s.f.
  

Current
Annualized
Contractual Rent
Under Expiring
Leases With
Future

Step-ups (2)

   Current
Annualized
Contractual Rent
Under Expiring
Leases With
Future Step-ups
p.s.f. (2)
   Percentage
of Total
Square Feet
 

2007

   1,777,864    $ 63,862,659    $ 35.92    $ 63,674,829    $ 35.82    6.0 %

2008

   1,665,528      68,233,873      40.97      70,260,518      42.19    5.6 %

2009

   2,649,338      99,015,688      37.37      103,107,908      38.92    8.9 %

2010

   2,461,512      85,160,282      34.60      89,456,165      36.34    8.3 %

2011

   2,861,425      115,772,913      40.46      123,887,814      43.30    9.6 %

2012

   2,358,396      95,143,174      40.34      104,307,577      44.23    7.9 %

2013

   754,108      32,368,025      42.92      38,504,687      51.06    2.5 %

2014

   2,173,023      71,821,981      33.05      80,078,729      36.85    7.3 %

2015

   1,312,076      45,533,680      34.70      52,386,393      39.93    4.4 %

2016

   2,699,564      152,920,669      56.65      166,968,180      61.85    9.1 %

Thereafter

   6,700,633      364,116,258      54.34      445,057,091      66.42    22.5 %

(1) Represents the monthly contractual base rent and recoveries from tenants under existing leases as of December 31, 2006 multiplied by twelve. This amount reflects total rent before any rent abatements and includes expense reimbursements, which may be estimates as of such date. Amounts do not include consolidated joint venture.
(2) Represents the monthly contractual base rent under expiring leases with future contractual increases upon expiration and recoveries from tenants under existing leases as of December 31, 2006 multiplied by twelve. This amount reflects total rent before any rent abatements and includes expense reimbursements, which may be estimates as of such date.

 

Item 3. Legal Proceedings

We are subject to various legal proceedings and claims that arise in the ordinary course of business. These matters are generally covered by insurance. Management believes that the final outcome of such matters will not have a material adverse effect on our financial position, results of operations or liquidity.

 

Item 4. Submission of Matters to a Vote of Security Holders

None.

 

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Table of Contents

PART II

 

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

(a) There is no established public trading market for the common units. On February 23, 2007, there were approximately 282 holders of record and 139,277,476 common units outstanding, 118,943,840 of which were held by Boston Properties, Inc. The following table sets for the quarterly distributions per common unit for the periods presented.

 

Quarter Ended

   Distributions  

December 31, 2006

   $ 6.08 (1)

September 30, 2006

     .68  

June 30, 2006

     .68  

March 31, 2006

     .68  

December 31, 2005

     .68  

September 30, 2005

     3.18 (2)

June 30, 2005

     .68  

March 31, 2005

     .65  

(1) Paid on January 30, 2007 to common and LTIP unitholders of record as of the close of business on December 29, 2006. Amount includes the $5.40 per common unit special distribution.
(2) For the three months ended September 30, 2005, amount includes the $2.50 per common unit special distribution which was paid on October 31, 2005 to common and LTIP unitholders of record as of the close of business on September 30, 2005.

In order to maintain Boston Properties, Inc.’s qualification as a REIT, it must make annual distributions to its stockholders of at least 90% of its taxable income (not including net capital gains). Boston Properties, Inc. has adopted a policy of paying regular quarterly dividends on its common stock, and we have adopted a policy of paying regular quarterly distributions on our common units. Cash distributions have been paid on the common stock of Boston Properties, Inc. and our common units since the initial public offering of Boston Properties, Inc. Distributions are declared at the discretion of the Board of Directors of Boston Properties, Inc. and depend on actual and anticipated cash from operations, our financial condition, capital requirements, the annual distribution requirements under the REIT provisions of the Internal Revenue Code and other factors Boston Properties, Inc.’s Board of Directors may consider relevant.

Each time Boston Properties, Inc. issues shares of stock (other than in exchange for OP Units when such OP Units are presented for redemption), it contributes the proceeds of such issuance to us in return for an equivalent number of partnership units with rights and preferences analogous to the shares issued. During the fourth quarter 2006, in connection with issuance of common stock by Boston Properties, Inc. pursuant to exercises of stock options under the Boston Properties, Inc. 1997 Stock Option and Incentive Plan, we issued an aggregate of approximately 429,452 OP Units to Boston Properties, Inc. in exchange for approximately $25.3 million, the aggregate proceeds of the common stock issuances by Boston Properties, Inc. Such units were issued in reliance on an exemption from registration under Section 4(2) of the Securities Act of 1933, as amended.

(b) None

 

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Table of Contents

(c) Issuer Purchases of Equity Securities

 

Period

   (a) Total
Number of
Partnership
Units
Purchased
    (b) Average
Price Paid
per Unit
   (c) Total Number
of Units
Purchased as
Part of Publicly
Announced
Plans or
Programs
   (d) Maximum
Number (or
Approximate
Dollar Value)
of Units that
May Yet be
Purchased

October 1, 2006 – October 31, 2006

   —         —      N/A    N/A

November 1, 2006 – November 30, 2006

   1,795 (1)   $ 117.64    N/A    N/A

December 1, 2006 – December 31, 2006

   —         —      N/A    N/A
                      

Total

   1,795     $ 117.64        N/A        N/A
                      

(1) Represents 1,743 common units previously held by Boston Properties, Inc. that were repurchased in connection with the surrender of restricted shares of common stock of Boston Properties, Inc. by an employee to satisfy such employee’s tax withholding obligation in connection with the vesting of restricted Common Stock. Such shares were repurchased by Boston Properties, Inc. for their fair market value on the vesting date. Also includes 52 common units presented by the holder for redemption pursuant to the terms of the Company’s partnership agreement.

 

34


Table of Contents
Item 6. Selected Financial Data

The following table sets forth our selected financial and operating data on a historical basis, which has been revised for the reclassification of (1) losses from early extinguishments of debt in accordance with SFAS No. 145, (2) the restatement of earnings per unit to include the effects of participating securities in accordance with EITF 03-6 and (3) the disposition of qualifying properties during 2006, 2005, 2004, 2003 and 2002 which have been reclassified as discontinued operations, for the periods presented, in accordance with SFAS No. 144. Refer to Note 20 of the Consolidated Financial Statements. The following data should be read in conjunction with our financial statements and notes thereto and Management’s Discussion and Analysis of Financial Condition and Results of Operations included elsewhere in this Form 10-K.

Our historical operating results may not be comparable to our future operating results.

 

    For the year ended December 31,  
    2006     2005     2004     2003     2002  
    (in thousands, except per unit data)  

Statement of Operations Information:

         

Total revenue

  $ 1,477,586     $ 1,437,635     $ 1,386,346     $ 1,283,165     $ 1,157,820  
                                       

Expenses:

         

Rental operating

    441,814       438,335       416,327       393,965       361,051  

Hotel operating

    55,538       51,689       49,442       46,732       27,816  

General and administrative

    59,375       55,471       53,636       45,359       47,292  

Interest

    298,260       308,091       306,170       299,436       263,067  

Depreciation and amortization

    272,608       264,182       247,924       205,586       175,612  

Net derivative losses

    —         —         —         1,038       11,874  

Losses from early extinguishments of debt

    32,143       12,896       6,258       1,474       2,386  

Losses on investments in securities

    —         —         —         —         4,297  
                                       

Income before income from unconsolidated joint ventures and minority interests in property partnerships

    317,848       306,971       306,589       289,575       264,425  

Income from unconsolidated joint ventures

    24,507       4,829       3,380       6,016       7,954  

Minority interests in property partnerships

    2,013       6,017       4,685       1,827       2,408  
                                       

Income before gains on sales of real estate and other assets

    344,368       317,817       314,654       297,418       274,787  

Gains on sales of real estate

    727,131       188,546       9,822       70,627       233,304  
                                       

Income before discontinued operations

    1,071,499       506,363       324,476       368,045       508,091  

Discontinued operations

    —         60,248       37,457       105,256       62,867  
                                       

Income before cumulative effect of a change in accounting principle

    1,071,499       566,611       361,933       473,301       570,958  

Cumulative effect of a change in accounting principle

    —         (5,043 )     —         —         —    
                                       

Income before preferred distributions and allocation of undistributed earnings

    1,071,499       561,568       361,933       473,301       570,958  

Preferred distributions and allocation of undistributed earnings

    (22,814 )     (26,780 )     (17,133 )     (31,165 )     (50,262 )
                                       

Net income available to common unitholders

  $ 1,048,685     $ 534,788     $ 344,800     $ 442,136     $ 520,696  
                                       

Basic earnings per common unit:

         

Income available to common unitholders before discontinued operations and cumulative effect of a change in accounting principle

  $ 7.72     $ 3.61     $ 2.40     $ 2.85     $ 4.03  

Discontinued operations

    —         0.45       0.29       0.89       0.55  

Cumulative effect of a change in accounting principle

    —         (0.04 )     —         —         —    
                                       

Net income available to common unitholders

  $ 7.72     $ 4.02     $ 2.69     $ 3.74     $ 4.58  
                                       

Weighted average number of common units outstanding

    135,923       132,881       128,313       118,087       113,617  
                                       

Diluted earnings per common unit:

         

Income available to common unitholders before discontinued operations and cumulative effect of a change in accounting principle

  $ 7.58     $ 3.55     $ 2.35     $ 2.81     $ 3.98  

Discontinued operations

    —         0.45       0.29       0.88       0.55  

Cumulative effect of a change in accounting principle

    —         (0.04 )     —         —         —    
                                       

Net income available to common unitholders

  $ 7.58     $ 3.96     $ 2.64     $ 3.69     $ 4.53  
                                       

Weighted average number of common and common equivalent units outstanding

    138,279       135,166       130,617       119,673       115,084  
                                       

 

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     December 31,  
     2006     2005     2004     2003     2002  
     (in thousands)  

Balance Sheet information:

          

Real estate, gross

   $ 9,211,351     $ 9,001,776     $ 9,171,944     $ 8,919,234     $ 8,608,052  

Real estate, net

     7,828,431       7,742,677       8,032,166       7,919,665       7,785,919  

Cash and cash equivalents

     725,788       261,496       239,344       22,686       55,275  

Total assets

     9,363,050       8,758,943       8,947,536       8,488,940       8,365,344  

Total indebtedness

     4,600,937       4,826,254       5,011,814       5,004,720       5,147,220  

Minority interests in property partnerships

     12,454       17,954       26,912       27,627       29,882  

Redeemable preferred units

     2,639,799       1,973,040       1,751,225       1,419,360       1,105,561  

Partners’ capital

     862,509       1,522,195       1,828,572       1,721,149       1,806,869  
     For the year ended December 31,  
     2006     2005     2004     2003     2002  
     (in thousands, except per unit data)  

Other Information:

          

Funds from operations (1)

   $ 593,740     $ 572,877     $ 553,829     $ 499,663     $ 464,513  

Funds from operations, as adjusted (1)

     625,184       583,918       553,829       502,175       487,293  

Distributions per common unit

     8.12       5.19       2.58       2.50       2.41  

Cash flow provided by operating activities

     527,979       472,249       429,506       488,275       437,380  

Cash flow provided by (used in) investing activities

     229,756       356,605       (171,014 )     97,496       (1,017,283 )

Cash flow provided by (used in) financing activities

     (293,443 )     (806,702 )     (41,834 )     (618,360 )     537,111  

Total square feet at end of year

     43,389       42,013       44,117       43,894       42,411  

Leased rate at end of year

     94.2 %     93.8 %     92.1 %     92.1 %     93.9 %

(1) Pursuant to the revised definition of Funds from Operations adopted by the Board of Governors of the National Association of Real Estate Investment Trusts (“NAREIT”), we calculate Funds from Operations, or “FFO,” by adjusting net income (loss) available to common unitholders (computed in accordance with GAAP, including non-recurring items) for gains (or losses) from sales of properties, real estate related depreciation and amortization, and after adjustment for unconsolidated partnerships, joint ventures and preferred distributions. FFO is a non-GAAP financial measure. The use of FFO, combined with the required primary GAAP presentations, has been fundamentally beneficial in improving the understanding of operating results of REITs among the investing public and making comparisons of REIT operating results more meaningful. Management generally considers FFO to be a useful measure for reviewing our comparative operating and financial performance because, by excluding gains and losses related to sales of previously depreciated operating real estate assets and excluding real estate asset depreciation and amortization (which can vary among owners of identical assets in similar condition based on historical cost accounting and useful life estimates), FFO can help one compare the operating performance of a company’s real estate between periods or as compared to different companies. Our computation of FFO may not be comparable to FFO reported by other REITs or real estate companies that do not define the term in accordance with the current NAREIT definition or that interpret the current NAREIT definition differently.

In addition to presenting FFO in accordance with the NAREIT definition, we also disclose FFO, as adjusted, for year ended December 31, 2006 and 2005 which excludes the effects of the losses from early extinguishments of debt associated with the sales of real estate. The adjustment to exclude losses from early extinguishments of debt results when the sale of real estate encumbered by debt requires us to pay the extinguishment costs prior to the debt’s stated maturity and to write-off unamortized loan costs at the date of the extinguishment. Such costs are excluded from the gains on sales of real estate reported in accordance with GAAP. However, we view the losses from early extinguishments of debt associated with the sales of real estate as an incremental cost of the sale transactions because we extinguished the debt in connection with the consummation of the sale transactions and we had no intent to extinguish the debt absent such transactions. We believe that this supplemental adjustment more appropriately reflects the results of our operations exclusive of the impact of our sale transactions.

The adjustments for net derivative losses related to non-qualifying derivative contracts for the years ended December 31, 2003 and 2002 resulted from interest rate contracts we entered into prior to the effective date of SFAS No. 133 to limit our exposure to fluctuations in interest rates with respect to variable rate debt associated with real estate projects under development. Upon transition to SFAS No. 133 on January 1, 2001, the impacts of these contracts were recorded in current earnings, while prior to that time they were capitalized. Although these adjustments were attributable to a single hedging program, the underlying contracts extended over multiple reporting periods and therefore resulted in adjustments from 2002 through the third quarter of 2003. Management presents FFO before the impact of non-qualifying derivative contracts because economically this interest rate hedging program was consistent with our risk management objective of limiting our exposure to interest rate volatility and the change in accounting under GAAP did not correspond to a substantive difference. Management does not currently anticipate structuring future hedging programs in a manner that would give rise to this kind of adjustment.

The adjustments for early lease surrender for the year ended December 31, 2002 resulted from a unique lease transaction related to the surrender of space by a tenant that was accounted for as a termination for GAAP purposes and recorded in income at the time the space

 

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was surrendered. However, we continued to collect payments monthly after the surrender of space through the month of July 2002, the date on which the terminated lease would otherwise have expired under its original terms. Management presents FFO after the early surrender lease adjustment because economically this transaction impacted periods subsequent to the time the space was surrendered by the tenant and, therefore, recording the entire amount of the lease termination payment in a single period made FFO less useful as an indicator of operating performance. Although these adjustments are attributable to a single lease, the transaction impacted multiple reporting periods and resulted in an adjustment for the year ended December 31, 2002.

Although our FFO, as adjusted, clearly differs from NAREIT’s definition of FFO, and may not be comparable to that of other REITs and real estate companies, we believe it provides a meaningful supplemental measure of our operating performance because we believe that, by excluding the effects of the losses from early extinguishments of debt associated with the sales of real estate, adjustments for non-qualifying derivative contracts and early lease surrender payments, management and investors are presented with an indicator of our operating performance that more closely achieves the objectives of the real estate industry in presenting FFO.

Neither FFO, nor FFO as adjusted, should be considered as an alternative to net income available to common unitholders (determined in accordance with GAAP) as an indication of our performance. Neither FFO nor FFO, as adjusted, represent cash generated from operating activities determined in accordance with GAAP and is not a measure of liquidity or an indicator of our ability to make cash distributions. We believe that to further understand our performance, FFO and FFO, as adjusted should be compared with our reported net income and considered in addition to cash flows in accordance with GAAP, as presented in our Consolidated Financial Statements.

A reconciliation of FFO, and FFO, as adjusted, to net income available to common unitholders computed in accordance with GAAP is provided under the heading of “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Funds from Operations.”

 

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion should be read in conjunction with the financial statements and notes thereto appearing elsewhere in this report.

Forward-Looking Statements

This Annual Report on Form 10-K contains forward-looking statements within the meaning of the federal securities laws, principally, but not only, under the captions “Business-Business and Growth Strategies,” “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” We caution investors that any forward-looking statements in this report, or which management may make orally or in writing from time to time, are based on management’s beliefs and on assumptions made by, and information currently available to, management. When used, the words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “might,” “plan,” “project,” “result” “should,” “will,” and similar expressions which do not relate solely to historical matters are intended to identify forward-looking statements. These statements are subject to risks, uncertainties and assumptions and are not guarantees of future performance, which may be affected by known and unknown risks, trends, uncertainties and factors that are beyond our control. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may differ materially from those anticipated, estimated or projected by the forward-looking statements. We caution you that, while forward-looking statements reflect our good faith beliefs when we make them, they are not guarantees of future performance and are impacted by actual events when they occur after we make such statements. We expressly disclaim any responsibility to update our forward-looking statements, whether as a result of new information, future events or otherwise. Accordingly, investors should use caution in relying on past forward-looking statements, which are based on results and trends at the time they are made, to anticipate future results or trends.

Some of the risks and uncertainties that may cause our actual results, performance or achievements to differ materially from those expressed or implied by forward-looking statements include, among others, the following:

 

   

general risks affecting the real estate industry (including, without limitation, the inability to enter into or renew leases, dependence on tenants’ financial condition, and competition from other developers, owners and operators of real estate);

 

   

failure to manage effectively our growth and expansion into new markets and sub-markets or to integrate acquisitions and developments successfully;

 

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risks and uncertainties affecting property development and construction (including, without limitation, construction delays, cost overruns, inability to obtain necessary permits and public opposition to such activities);

 

   

risks associated with the availability and terms of financing and the use of debt to fund acquisitions and developments, including the risk associated with interest rates impacting the cost and/or availability of financing;

 

   

risks associated with forward interest rate contracts and the effectiveness of such arrangements;

 

   

risks associated with downturns in the national and local economies, increases in interest rates, and volatility in the securities markets;

 

   

risks associated with actual or threatened terrorist attacks;

 

   

risks associated with the impact on our insurance program if TRIA, which expires on December 31, 2007, is not extended or is extended on different terms;

 

   

costs of compliance with the Americans with Disabilities Act and other similar laws;

 

   

potential liability for uninsured losses and environmental contamination;

 

   

risks associated with Boston Properties, Inc.’s potential failure to qualify as a REIT under the Internal Revenue Code of 1986, as amended;

 

   

possible adverse changes in tax and environmental laws;

 

   

risks associated with possible state and local tax audits; and

 

   

risks associated with our dependence on key personnel whose continued service is not guaranteed.

The risks included here are not exhaustive. Other sections of this report, including “Part I, Item 1A—Risk Factors,” include additional factors that could adversely affect our business and financial performance. Moreover, we operate in a very competitive and rapidly changing environment. New risk factors emerge from time to time and it is not possible for management to predict all such risk factors, nor can we assess the impact of all such risk factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements. Given these risks and uncertainties, investors should not place undue reliance on forward-looking statements as a prediction of actual results. Investors should also refer to our quarterly reports on Form 10-Q for future periods and current reports on Form 8-K as we file them with the SEC, and to other materials we may furnish to the public from time to time through current reports on Form 8-K or otherwise.

Overview

Boston Properties Limited Partnership is the entity through which Boston Properties, Inc. conducts substantially all of its business and owns (either directly or through subsidiaries) substantially all of its assets. Our properties are concentrated in five markets—Boston, midtown Manhattan, Washington, D.C., San Francisco and Princeton, NJ. We generate revenue and cash primarily by leasing our Class A office space to our tenants. Factors we consider when we lease space include the creditworthiness of the tenant, the length of the lease, the rental rate to be paid, the costs of tenant improvements, current and anticipated operating costs and real estate taxes, our current and anticipated vacancy, current and anticipated future demand for office space generally and general economic factors. We also generate cash through the sale of assets, which may be either non-core assets that have limited growth potential or core assets that command premiums from real estate investors.

The office markets in which we operate continued to show dramatic improvement over the past twelve months, with the pace of rental rate growth and the demand for high-quality space continuing to accelerate. We continue to experience strong market rental rate growth in midtown Manhattan, San Francisco, Washington, D.C. and Boston. We expect this trend to continue, but its impact on our rental revenues will be felt gradually given

 

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the modest amount of 2007 lease expirations. Some of the leases that expire in 2007 reflect the high rents achieved in the late 1990s and early 2000s, and therefore we could experience some roll down in near-term on specific leases rents at certain properties in our portfolio despite the positive overall trends in our markets.

Our core strategy has always been to operate in supply constrained markets, so combining strong demand, increasing replacement costs and scarcity of supply, we expect our assets to continue to appreciate over time. Many individuals and institutions have recognized these same conditions which have translated into a supply of capital that continues to compete to own commercial real estate assets. We remain concerned that making significant acquisitions at today’s pricing levels could reduce our ability to enhance our long-term earnings growth rate, so we have chosen the path of selectively selling assets, reducing the overall size of the portfolio and focusing our more substantial investments on new development opportunities. During 2006, we sold $1.26 billion of assets, compared with $838 million during 2005.

We believe the sale of 280 Park Avenue in June 2006 and the sale of 5 Times Square on February 15, 2007 are evidence of a trend that sees allocators of capital continuing to place premiums on high-quality, well-located office buildings resulting in lower capitalization rates and higher prices per square foot. As an owner of these types of assets, we are pleased with higher valuations, and, given current market conditions, we intend to continue to explore the selective sale of some of our assets (including core assets) to realize some of this value. Unfortunately, the same market conditions that are leading to record valuations for Class A office buildings and that make significant asset sales attractive to us are also continuing to make it more difficult for us to acquire assets at what we believe to be attractive rates of return. However, we have acquired and intend to pursue the acquisition of assets at attractive initial rates of return or where the potential exists for long-term value appreciation.

As we look forward into 2007 and 2008, we will be operating with a smaller portfolio than in prior years and we will be concentrating on a growing development pipeline. Given current market conditions, we generally believe that the returns we can generate from developments will be significantly greater than those we can expect to realize from acquisitions. As a result, we will continue to focus significant energy and capital on our current and future development pipeline. We are also considering alternative uses (i.e., non-office) for some of our land holdings and may participate in or undertake alternative development projects. During 2006, we started more than $300 million of developments and in 2007 we anticipate starting in excess of $1 billion of developments.

Critical Accounting Policies

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America, or GAAP, requires management to use judgment in the application of accounting policies, including making estimates and assumptions. We base our estimates on historical experience and on various other assumptions believed to be reasonable under the circumstances. These judgments affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting periods. If our judgment or interpretation of the facts and circumstances relating to various transactions had been different, it is possible that different accounting policies would have been applied resulting in a different presentation of our financial statements. From time to time, we evaluate our estimates and assumptions. In the event estimates or assumptions prove to be different from actual results, adjustments are made in subsequent periods to reflect more current information. Below is a discussion of accounting policies that we consider critical in that they may require complex judgment in their application or require estimates about matters that are inherently uncertain.

Real Estate

Upon acquisitions of real estate, we assess the fair value of acquired tangible and intangible assets, including land, buildings, tenant improvements, “above-” and “below-market” leases, origination costs, acquired in-place leases, other identified intangible assets and assumed liabilities in accordance with Statement of

 

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Financial Accounting Standards (“SFAS”) No. 141, “Business Combinations” and allocate the purchase price to the acquired assets and assumed liabilities, including land at appraised value and buildings at replacement cost. We assess and consider fair value based on estimated cash flow projections that utilize discount and/or capitalization rates that we deem appropriate, as well as available market information. Estimates of future cash flows are based on a number of factors including the historical operating results, known and anticipated trends, and market and economic conditions. The fair value of the tangible assets of an acquired property considers the value of the property as if it were vacant. We also consider an allocation of purchase price of other acquired intangibles, including acquired in-place leases that may have a customer relationship intangible value, including (but not limited to) the nature and extent of the existing relationship with the tenants, the tenants’ credit quality and expectations of lease renewals. Based on our acquisitions to date, our allocation to customer relationship intangible assets has been immaterial.

We record acquired “above-” and “below-market” leases at their fair values (using a discount rate which reflects the risks associated with the leases acquired) equal to the difference between (1) the contractual amounts to be paid pursuant to each in-place lease and (2) management’s estimate of fair market lease rates for each corresponding in-place lease, measured over a period equal to the remaining term of the lease for above-market leases and the initial term plus the term of any below-market fixed rate renewal options for below-market leases. Other intangible assets acquired include amounts for in-place lease values that are based on our evaluation of the specific characteristics of each tenant’s lease. Factors to be considered include estimates of carrying costs during hypothetical expected lease-up periods considering current market conditions, and costs to execute similar leases. In estimating carrying costs, we include real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods, depending on local market conditions. In estimating costs to execute similar leases, we consider leasing commissions, legal and other related expenses.

Real estate is stated at depreciated cost. The cost of buildings and improvements includes the purchase price of property, legal fees and other acquisition costs. Costs directly related to the development of properties are capitalized. Capitalized development costs include interest, internal wages, property taxes, insurance, and other project costs incurred during the period of development.

Management reviews its long-lived assets used in operations for impairment when there is an event or change in circumstances that indicates an impairment in value. An impairment loss is recognized if the carrying amount of its assets is not recoverable and exceeds its fair value. If such impairment is present, an impairment loss is recognized based on the excess of the carrying amount of the asset over its fair value. The evaluation of anticipated cash flows is highly subjective and is based in part on assumptions regarding future occupancy, rental rates and capital requirements that could differ materially from actual results in future periods. Since cash flows on properties considered to be “long-lived assets to be held and used” as defined by SFAS No. 144 “Accounting for the Impairment or Disposal of Long-Lived Assets,” (“SFAS No. 144”) are considered on an undiscounted basis to determine whether an asset has been impaired, our established strategy of holding properties over the long term directly decreases the likelihood of recording an impairment loss. If our strategy changes or market conditions otherwise dictate an earlier sale date, an impairment loss may be recognized and such loss could be material. If we determine that impairment has occurred, the affected assets must be reduced to their fair value. No such impairment losses have been recognized to date.

SFAS No. 144 requires that qualifying assets and liabilities and the results of operations that have been sold, or otherwise qualify as “held for sale,” be presented as discontinued operations in all periods presented if the property operations are expected to be eliminated and we will not have significant continuing involvement following the sale. The components of the property’s net income that is reflected as discontinued operations include the net gain (or loss) upon the disposition of the property held for sale, operating results, depreciation and interest expense (if the property is subject to a secured loan). We generally consider assets to be “held for sale” when the transaction has been approved by our Board of Directors, or a committee thereof, and there are no known significant contingencies relating to the sale, such that the property sale within one year is considered probable. Following the classification of a property as “held for sale,” no further depreciation is recorded on the assets.

 

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A variety of costs are incurred in the acquisition, development and leasing of properties. After the determination is made to capitalize a cost, it is allocated to the specific component of a project that is benefited. Determination of when a development project is substantially complete and capitalization must cease involves a degree of judgment. Our capitalization policy on development properties is guided by SFAS No. 34 “Capitalization of Interest Cost” and SFAS No. 67 “Accounting for Costs and the Initial Rental Operations of Real Estate Projects.” The costs of land and buildings under development include specifically identifiable costs. The capitalized costs include pre-construction costs essential to the development of the property, development costs, construction costs, interest costs, real estate taxes, salaries and related costs and other costs incurred during the period of development. We consider a construction project as substantially completed and held available for occupancy upon the completion of tenant improvements, but no later than one year from cessation of major construction activity. We cease capitalization on the portion (1) substantially completed and (2) occupied or held available for occupancy, and we capitalize only those costs associated with the portion under construction.

Investments in Unconsolidated Joint Ventures

Except for ownership interests in variable interest entities, we account for our investments in joint ventures under the equity method of accounting because we exercise significant influence over, but do not control, these entities. These investments are recorded initially at cost, as Investments in Unconsolidated Joint Ventures, and subsequently adjusted for equity in earnings and cash contributions and distributions. Any difference between the carrying amount of these investments on our balance sheet and the underlying equity in net assets is amortized as an adjustment to equity in earnings of unconsolidated joint ventures over the life of the related asset. Under the equity method of accounting, our net equity is reflected within the Consolidated Balance Sheets, and our share of net income or loss from the joint ventures is included within the Consolidated Statements of Operations. The joint venture agreements may designate different percentage allocations among investors for profits and losses, however, our recognition of joint venture income or loss generally follows the joint venture’s distribution priorities, which may change upon the achievement of certain investment return thresholds. For ownership interests in variable interest entities, we consolidate those in which we are the primary beneficiary.

Revenue Recognition

Base rental revenue is reported on a straight-line basis over the terms of our respective leases. In accordance with SFAS No. 141, we recognize rental revenue of acquired in-place “above-” and “below-market” leases at their fair values over the terms of the respective leases. Accrued rental income as reported on the Consolidated Balance Sheets represents rental income recognized in excess of rent payments actually received pursuant to the terms of the individual lease agreements.

Our leasing strategy is generally to secure creditworthy tenants that meet our underwriting guidelines. Furthermore, following the initiation of a lease, we continue to actively monitor the tenant’s creditworthiness to ensure that all tenant related assets are recorded at their realizable value. When assessing tenant credit quality, we:

 

   

review relevant financial information, including:

 

   

financial ratios;

 

   

net worth;

 

   

debt to market capitalization; and

 

   

liquidity;

 

   

evaluate the depth and experience of the tenant’s management team; and

 

   

assess the strength/growth of the tenant’s industry.

As a result of the underwriting process, tenants are then categorized into one of three categories:

 

  (1) low risk tenants;

 

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  (2) the tenant’s credit is such that we require collateral, in which case we:

 

   

require a security deposit; and/or

 

   

reduce upfront tenant improvement investments; or

 

  (3) the tenant’s credit is below our acceptable parameters.

We maintain a rigorous process of monitoring the credit quality of our tenant base. We provide an allowance for doubtful accounts arising from estimated losses that could result from the tenant’s inability to make required current rent payments and an allowance against accrued rental income for future potential losses that we deem to be unrecoverable over the term of the lease.

Tenant receivables are assigned a credit rating of 1-4 with a rating of 1 representing the highest possible rating with no allowance recorded and a rating of 4 representing the lowest credit rating, recording a full reserve against the receivable balance. Among the factors considered in determining the credit rating include:

 

   

payment history;

 

   

credit status and change in status (credit ratings for public companies are used as a primary metric);

 

   

change in tenant space needs (i.e., expansion/downsize);

 

   

tenant financial performance;

 

   

economic conditions in a specific geographic region; and

 

   

industry specific credit considerations.

If our estimates of collectibility differ from the cash received, the timing and amount of our reported revenue could be impacted. The average remaining term of our in-place tenant leases was approximately 7.8 years as of December 31, 2006. The credit risk is mitigated by the high quality of our existing tenant base, reviews of prospective tenants’ risk profiles prior to lease execution and frequent monitoring of our portfolio to identify potential problem tenants.

Recoveries from tenants, consisting of amounts due from tenants for common area maintenance, real estate taxes and other recoverable costs, are recognized as revenue in the period the expenses are incurred. Tenant reimbursements are recognized and presented in accordance with Emerging Issues Task Force, or EITF, Issue 99-19 “Reporting Revenue Gross as a Principal versus Net as an Agent,” or Issue 99-19. Issue 99-19 requires that these reimbursements be recorded on a gross basis, as we are generally the primary obligor with respect to purchasing goods and services from third-party suppliers, have discretion in selecting the supplier and have credit risk. We also receive reimbursement of payroll and payroll related costs from third parties which we reflect on a net basis in accordance with Issue 99-19.

Our hotel revenues are derived from room rentals and other sources such as charges to guests for long-distance telephone service, fax machine use, movie and vending commissions, meeting and banquet room revenue and laundry services. Hotel revenues are recognized as earned.

We receive management and development fees from third parties. Management fees are recorded and earned based on a percentage of collected rents at the properties under management, and not on a straight-line basis, because such fees are contingent upon the collection of rents. We review each development agreement and record development fees on a straight-line basis or percentage of completion depending on the risk associated with each project. Profit on development fees earned from joint venture projects is recognized as revenue to the extent of the third party partners’ ownership interest.

Gains on sales of real estate are recognized pursuant to the provisions of SFAS No. 66, “Accounting for Sales of Real Estate.” The specific timing of the sale is measured against various criteria in SFAS No. 66 related

 

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to the terms of the transactions and any continuing involvement in the form of management or financial assistance associated with the properties. If the sales criteria are not met, we defer gain recognition and account for the continued operations of the property by applying the finance, installment or cost recovery methods, as appropriate, until the sales criteria are met.

Depreciation and Amortization

We compute depreciation and amortization on our properties using the straight-line method based on estimated useful asset lives. In accordance with SFAS No. 141, we allocate the acquisition cost of real estate to land, building, tenant improvements, acquired “above-” and “below-market” leases, origination costs and acquired in-place leases based on an assessment of their fair value and depreciate or amortize these assets over their useful lives. The amortization of acquired “above-” and “below-market” leases and acquired in-place leases is recorded as an adjustment to revenue and depreciation and amortization, respectively, in the Consolidated Statements of Operations.

Fair Value of Financial Instruments

For purposes of disclosure, we calculate the fair value of our mortgage notes payable and unsecured senior notes. We discount the spread between the future contractual interest payments and future interest payments on our mortgage debt and unsecured notes based on a current market rate. In determining the current market rate, we add our estimate of a market spread to the quoted yields on federal government treasury securities with similar maturity dates to our own debt. Because our valuations of our financial instruments are based on these types of estimates, the fair value of our financial instruments may change if our estimates do not prove to be accurate.

Results of Operations

The following discussion is based on our Consolidated Financial Statements for the years ended December 31, 2006, 2005 and 2004.

At December 31, 2006, 2005 and 2004, we owned or had interests in a portfolio of 131, 121 and 125 properties, respectively (the “Total Property Portfolio”). As a result of changes within our Total Property Portfolio, the financial data presented below shows significant changes in revenue and expenses from period-to-period. Accordingly, we do not believe that our period-to-period financial data with respect to the Total Property Portfolio are necessarily meaningful. Therefore, the comparisons of operating results for the years ended 2006, 2005 and 2004 show separately the changes attributable to the properties that were owned by us throughout each period compared (the “Same Property Portfolio”) and the changes attributable to the Total Property Portfolio.

In our analysis of operating results, particularly to make comparisons of net operating income between periods meaningful, it is important to provide information for properties that were in-service and owned by us throughout each period presented. We refer to properties acquired or placed in-service prior to the beginning of the earliest period presented and owned by us through the end of the latest period presented as our Same Property Portfolio. The Same Property Portfolio therefore excludes properties placed in-service, acquired or repositioned after the beginning of the earliest period presented or disposed of prior to the end of the latest period presented.

Net operating income, or “NOI,” is a non-GAAP financial measure equal to net income available to common unitholders, the most directly comparable GAAP financial measure, plus cumulative effect of a change in accounting principle, losses from early extinguishments of debt, depreciation and amortization, interest expense, general and administrative expense, less gains on sales of real estate from discontinued operations, income from discontinued operations, gains on sales of real estate and other assets, income from unconsolidated joint ventures, minority interest in property partnerships, interest and other income and development and management services revenue. We use NOI internally as a performance measure and believe NOI provides useful

 

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information to investors regarding our financial condition and results of operations because it reflects only those income and expense items that are incurred at the property level. Therefore, we believe NOI is a useful measure for evaluating the operating performance of our real estate assets.

Our management also uses NOI to evaluate regional property level performance and to make decisions about resource allocations. Further, we believe NOI is useful to investors as a performance measure because, when compared across periods, NOI reflects the impact on operations from trends in occupancy rates, rental rates, operating costs and acquisition and development activity on an unleveraged basis, providing perspective not immediately apparent from net income. NOI excludes certain components from net income in order to provide results that are more closely related to a property’s results of operations. For example, interest expense is not necessarily linked to the operating performance of a real estate asset and is often incurred at the corporate level as opposed to the property level. In addition, depreciation and amortization, because of historical cost accounting and useful life estimates, may distort operating performance at the property level. NOI presented by us may not be comparable to NOI reported by other REITs that define NOI differently. We believe that in order to facilitate a clear understanding of our operating results, NOI should be examined in conjunction with net income as presented in our consolidated financial statements. NOI should not be considered as an alternative to net income as an indication of our performance or to cash flows as a measure of liquidity or ability to make distributions.

Comparison of the year ended December 31, 2006 to the year ended December 31, 2005

The table below shows selected operating information for the Same Property Portfolio and the Total Property Portfolio. The Same Property Portfolio consists of 113 properties, including two hotel properties, properties acquired or placed in-service on or prior to January 1, 2005 and owned through December 31, 2006, totaling approximately 29.0 million net rentable square feet of space (excluding square feet of structured parking). The Total Property Portfolio includes the effects of the other properties either placed in-service, acquired or repositioned after January 1, 2005 or disposed of on or prior to December 31, 2006. This table includes a reconciliation from the Same Property Portfolio to the Total Property Portfolio by also providing information for the year ended December 31, 2006 and 2005 with respect to the properties which were acquired, placed in-service, repositioned or sold.

 

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    Same Property Portfolio     Properties Sold   Properties
Acquired
  Properties Placed
In-Service
  Properties
Repositioned
  Total Property Portfolio  
(dollars in thousands)   2006   2005  

Increase/

(Decrease)

  %
Change
    2006   2005   2006     2005     2006     2005     2006   2005   2006     2005    

Increase/

(Decrease)

    %
Change
 

Rental Revenue:

                               

Rental Revenue

  $ 1,243,672   $ 1,209,589   $ 34,083   2.82 %   $ 32,208   $ 104,430   $ 15,498   $ 28   $ 24,117   $ 412   $ 20,402   $ 13,094   $ 1,335,897     $ 1,327,553     $ 8,344     0.63 %

Termination Income

    8,137     5,416     2,721   50.24 %     —       6,064     —       —       —       —       —       —       8,137       11,480       (3,343 )   (29.12 )%
                                                                                                     

Total Rental Revenue

    1,251,809     1,215,005     36,804   3.03 %     32,208     110,494     15,498     28     24,117     412     20,402     13,094     1,344,034       1,339,033       5,001     0.37 %
                                                                                                     

Real Estate Operating Expenses

    411,486     389,954     21,532   5.52 %     14,307     44,818     5,866     18     4,731     122     5,424     3,423     441,814       438,335       3,479     0.79 %
                                                                                                     

Net Operating Income, excluding hotels

    840,323     825,051     15,272   1.85 %     17,901     65,676     9,632     10     19,386     290     14,978     9,671     902,220       900,698       1,522     0.17 %
                                                                                                     

Hotel Net Operating Income (1)

    21,452     17,588     3,864   21.97 %     —       —       —       —       —       —       —       —       21,452       17,588       3,864     21.97 %
                                                                                                     

Consolidated Net Operating Income (1)

    861,775     842,639     19,136   2.27 %     17,901     65,676     9,632     10     19,386     290     14,978     9,671     923,672       918,286       5,386     0.59 %
                                                                                                     

Other Revenue:

                               

Development and Management services

    —       —       —     —         —       —       —       —       —       —       —       —       19,825       17,310       2,515     14.53 %

Interest and Other

    —       —       —     —         —       —       —       —       —       —       —       —       36,737       12,015       24,722     205.76 %
                                                                                                     

Total Other Revenue

    —       —       —     —         —       —       —       —       —       —       —       —       56,562       29,325       27,237     92.88 %

Other Expenses:

                               

General and administrative

    —       —       —     —         —       —       —       —       —       —       —       —       59,375       55,471       3,904     7.04 %

Interest

    —       —       —     —         —       —       —       —       —       —       —       —       298,260       308,091       (9,831 )   (3.19 )%

Depreciation and amortization

    251,951     244,738     7,213   2.95 %     3,502     17,695     6,758     —       7,365     94     3,032     1,655     272,608       264,182       8,426     3.19 %

Losses from early extinguishments of debt

    —       —       —     —         —       —       —       —       —       —       —       —       32,143       12,896       19,247     149.25 %
                                                                                                     

Total Other Expenses

    251,951     244,738     7,213   2.95 %     3,502     17,695     6,758     —       7,365     94     3,032     1,655     662,386       640,640       21,746     3.39 %

Income before minority interests

  $ 609,824   $ 597,901   $ 11,923   1.99 %   $ 14,399   $ 47,981   $ 2,874   $ 10   $ 12,021   $ 196   $ 11,946   $ 8,016   $ 317,848     $ 306,971     $ 10,877     3.54 %

Income from unconsolidated joint ventures

  $            $            $                     %   $            $            $            $            $            $            $ —     $ —       24,507       4,829       19,678     407.50 %
                                                                               

Income from discontinued operations

  $ —     $ —     $ —     —       $     $ 2,279   $ —     $ —     $ —     $ —     $ —     $ —       —         2,279       (2,279 )   (100.0 )%

Minority interests in property partnerships

                            2,013       6,017       (4,004 )   (66.54 )%

Gains on sales of real estate and other assets

                            727,131       188,546       538,585     285.65 %

Gains on sales of real estate from discontinued operations

                            —         57,969       (57,969 )   (100.0 )%

Cumulative effect of a change in accounting principle

                            —         (5,043 )     5,043     100.0 %

Preferred distributions and allocation of undistributed earnings

                            (22,814 )     (26,780 )     3,966     14.81 %
                                                     

Net Income available to common unitholders

                          $ 1,048,685     $ 534,788     $ 513,897     96.09 %
                                                     

(1) For a detailed discussion of NOI, including the reasons management believes NOI is useful to investors, see page 43. Hotel Net Operating Income for the years ended December 31, 2006 and 2005 are comprised of Hotel Revenue of $76,990 and $69,277 less Hotel Expenses of $55,538 and $51,689, respectively per the Consolidated Income Statement.

 

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Rental Revenue

The increase of approximately $8.3 million in the Total Property Portfolio Rental Revenue is comprised of increases and decreases within the five categories that comprise our Total Property Portfolio. Rental revenue from the Same Property Portfolio increased approximately $34.1 million, Properties Sold decreased approximately $72.2 million, Properties Acquired increased approximately $15.5 million, Properties Placed In-Service increased approximately $23.7 million and Properties Repositioned increased approximately $7.3 million for the year ended December 31, 2006 compared to the year ended December 31, 2005.

Rental revenue from the Same Property Portfolio increased approximately $34.1 million for the year ended December 31, 2006 compared to 2005. Included in the Same Property Portfolio rental revenue is an overall increase in base rental revenue of approximately $35.1 million, offset by a decrease of approximately $16.8 million in straight-line rents, primarily due to the reduction of free rent at Times Square Tower during the prior year. Approximately $14.4 million of the increase from the Same Property Portfolio was due to an increase in recoveries from tenants which correlates with the increase in operating expenses. Approximately $1.4 million of the increase from the Same Property Portfolio was due to an increase in parking and other income.

The increase in rental revenue from Properties Placed In-Service relates to placing in-service our Seven Cambridge Center development project in the first quarter of 2006 and 12290 Sunrise Valley in the second quarter of 2006. During the fourth quarter of 2005, we placed our West Garage phase of our Seven Cambridge Center development into service which is included as part of Seven Cambridge Center below. Rental revenue from Properties Placed In-Service increased approximately $23.7 million, as detailed below:

 

    

Date Placed In

-Service

   Rental Revenue
for the year ended December 31

Property

          2006            2005            Change    
          (in thousands)

Seven Cambridge Center

   First Quarter, 2006    $ 19,940    $ 412    $ 19,528

12290 Sunrise Valley

   Second Quarter, 2006      4,177      —        4,177
                       

Total

      $ 24,117    $ 412    $ 23,705
                       

The acquisition of Prospect Place on December 30, 2005, 303 Almaden Boulevard on June 30, 2006, 3200 Zanker Road on August 10, 2006 and Four and Five Cambridge Center on November 30, 2006, increased revenue from Properties Acquired by approximately $15.5 million for the year ended December 31, 2006 as detailed below:

 

          Rental Revenue
for the year ended December 31

Property

  

Date Acquired

       2006            2005            Change    
          (in thousands)

Prospect Place

   December 30, 2005    $ 7,253    $ 28    $ 7,225

303 Almaden Avenue

   June 30, 2006      3,141      —        3,141

3200 Zanker Road

   August 10, 2006      3,839      —        3,839

Four and Five Cambridge Center

   November 30, 2006      1,265      —        1,265
                       

Total

      $ 15,498    $ 28    $ 15,470
                       

Rental revenue from Properties Repositioned for the year ended December 31, 2006 increased approximately $7.3 million over the year ended December 31, 2005. Our Capital Gallery expansion project is included in Properties Repositioned for the year ended December 31, 2006 and December 31, 2005. In April 2006, tenants began to take occupancy and we placed our Capital Gallery expansion project in-service in July 2006.

 

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The aggregate increase in rental revenue was offset by the sales of 280 Park Avenue in June 2006 and Embarcadero Center West Tower, Riverfront Plaza and 100 East Pratt Street during 2005. These properties have not been classified as discontinued operations due to our continuing involvement as the property manager for each property through agreements entered into at the time of sale. Rental Revenue from Properties Sold decreased by approximately $72.2 million, as detailed below:

 

          Rental Revenue
for the year ended December 31
 

Property

  

Date Sold

       2006            2005            Change      
          (in thousands)  

280 Park Avenue

   June 6, 2006    $ 32,208    $ 72,183    $(39,975 )

Riverfront Plaza

   May 16, 2005      —        8,760    (8,760 )

100 East Pratt Street

   May 12, 2005      —        8,406    (8,406 )

Embarcadero Center West Tower

   December 14, 2005      —        15,081    (15,081 )
                       

Total

      $ 32,208    $ 104,430    $(72,222 )
                       

Termination Income

Termination income for the year ended December 31, 2006 was related to multiple tenants across the Total Property Portfolio that terminated their leases, and we recognized termination income totaling approximately $8.1 million. This compared to termination income of $11.5 million for the year ended December 31, 2005 related to twenty-three tenants.

Real Estate Operating Expenses

The $3.5 million increase in property operating expenses (real estate taxes, utilities, insurance, repairs and maintenance, cleaning and other property-related expenses) in the Total Property Portfolio is comprised of increases and decreases within five categories that comprise our Total Property Portfolio. Operating expenses for the Same Property Portfolio increased approximately $21.5 million, Properties Sold decreased approximately $30.5 million, Properties Acquired increased approximately $5.8 million, Properties Placed In-Service increased approximately $4.6 million and Properties Repositioned increased approximately $2.0 million.

Operating expenses from the Same Property Portfolio increased approximately $21.5 million for the year ended December 31, 2006 compared to 2005. Included in Same Property Portfolio operating expenses is an increase in utility expenses of approximately $5.4 million, which represents an increase of approximately 7.0% over the prior year to date. In addition, real estate taxes increased approximately $8.6 million due to increased real estate tax assessments, with more than half of this increase specifically attributed to properties located in New York City. The remaining $7.5 million increase in the Same Property Portfolio operating expenses is related to an increase in repairs and maintenance.

The acquisitions of Prospect Place on December 30, 2005, 303 Almaden Boulevard on June 30, 2006, 3200 Zanker Road on August 10, 2006 and Four and Five Cambridge Center on November 30, 2006 increased operating expenses from Properties Acquired by approximately $5.8 million for the year ended December 31, 2006 as detailed below:

 

          Real Estate Operating Expenses
for the year ended December 31

Property

  

Date Acquired

       2006            2005            Change    
          (in thousands)

Prospect Place

   December 30, 2005    $ 3,627    $ 18      $3,609

303 Almaden Avenue

   June 30, 2006      1,223      —        1,223

3200 Zanker Road

   August 10, 2006      497      —        497

Four and Five Cambridge Center

   November 30, 2006      519         519
                       

Total

      $ 5,866    $ 18    $ 5,848
                       

 

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The increase in operating expenses from Properties Placed In-Service relates to placing in-service our Seven Cambridge Center development project in the first quarter of 2006 and 12290 Sunrise Valley in the second quarter of 2006. During the fourth quarter of 2005, we placed our West Garage phase of our Seven Cambridge Center development into service and it is included as part of Seven Cambridge Center below. Operating expenses from Properties Placed In-Service increased approximately $4.6 million, as detailed below:

 

          Real Estate Operating Expenses
for the year ended December 31

Property

  

Date Placed In-Service

       2006            2005            Change    
          (in thousands)

Seven Cambridge Center

   First Quarter, 2006    $ 4,277    $ 122      $4,155

12290 Sunrise Valley

   Second Quarter, 2006      454      —        454
                       

Total

      $ 4,731    $ 122    $ 4,609
                       

Operating expenses from Properties Repositioned for the year ended December 31, 2006 increased approximately $2.0 million over the year ended December 31, 2005. Our Capital Gallery expansion project is included in Properties Repositioned for the year ended December 31, 2006 and December 31, 2005. In April 2006, tenants began to take occupancy and during July 2006, we placed our Capital Gallery expansion project in-service.

A decrease of approximately $30.5 million in the Total Property Portfolio operating expenses was due to the sales of 280 Park Avenue in June 2006 and Embarcadero Center West Tower, 100 East Pratt Street and Riverfront Plaza in 2005, as detailed below:

 

          Real Estate Operating Expenses
for the year ended December 31
 

Property

  

Date Sold

           2006            2005            Change      
          (in thousands)  

280 Park Avenue

   June 6, 2006    $ 14,307    $ 32,418      $(18,111 )

100 East Pratt Street

   May 12, 2005      —        3,019      (3,019 )

Riverfront Plaza

   May 16, 2005      —        2,864      (2,864 )

Embarcadero Center West Tower

   December 14, 2005      —        6,517      (6,517 )
                         

Total

      $ 14,307    $ 44,818    $ (30,511 )
                         

We continue to review and monitor the impact of rising insurance and energy costs, as well as other factors, on our operating budgets for fiscal year 2007. Because some operating expenses are not recoverable from tenants, an increase in operating expenses due to one or more of the foregoing factors could have an adverse effect on our results of operations.

Hotel Net Operating Income

Net operating income for the hotel properties increased approximately $3.9 million, a 22.0% increase for the year ended December 31, 2006 as compared to 2005. For the year ended December 31, 2005 the operations of the Residence Inn by Marriott has been included as part of discontinued operations due to its sale on November 4, 2005. We expect the hotels to contribute in the aggregate between approximately $24 million and $25 million of net operating income in 2007.

The following reflects our occupancy and rate information for our hotel properties for the year ended December 31, 2006 and 2005:

 

     2006     2005     Percentage
Change
 

Occupancy

     79.3 %     77.4 %   2.5 %

Average daily rate

   $ 217.18     $ 197.82     9.8 %

Revenue per available room, REVPAR

   $ 173.35     $ 153.95     12.6 %

 

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Development and Management Services

Development and Management Services income increased approximately $2.5 million for the year ended December 31, 2006 compared to 2005. Management Service income has increased approximately $1.6 million due to management contracts following the sales of 100 East Pratt Street, Riverfront Plaza and Embarcadero Center West Tower in 2005, as well as the sale of 280 Park Avenue on June 6, 2006. Approximately $0.5 million of the increase related to tenant improvement construction management fees earned, the majority of which was in San Francisco. An increase in development income of approximately $0.4 million was due to the increasing development activity at our 505 9th Street joint venture project.

Interest and Other Income

Interest and other income increased by approximately $24.7 million for the year ended December 31, 2006 compared to 2005 as a result of higher overall interest rates and increased cash balances. During the second quarter of 2006, we issued $450 million of 3.75% exchangeable senior notes due 2036. On June 6, 2006, we completed the sale of 280 Park Avenue for net cash proceeds of approximately $875 million. The decision to declare a special dividend was the result of the sales of assets in 2006, including 280 Park Avenue and 265 Franklin Street.

Other Expenses

General and Administrative

General and administrative expenses increased approximately $3.9 million for the year ended December 31, 2006 compared to 2005. An overall increase of approximately $4.7 million was attributed to bonuses and salaries for the year ended December 31, 2006 compared to 2005 and approximately $1.5 million related to tax savings during 2005. These increases were offset by approximately $2.1 million of decreased accounting- and legal-related expenses, and other overall decreases aggregating approximately $0.2 million. We anticipate our general and administrative expenses to be between $66 million and $67 million for the year 2007. A significant portion of the expected increase results from the final ramp-up on our long-term equity compensation program described below.

Commencing in 2003, Boston Properties, Inc. issued restricted stock and/or LTIP Units, as opposed to granting stock options and restricted stock, under Boston Properties, Inc.’s 1997 Stock Option and Incentive Plan as Boston Properties, Inc.’s primary vehicle for employee equity compensation. An LTIP Unit is generally the economic equivalent of a share of Boston Properties, Inc.’s restricted stock. Employees generally vest in restricted stock and LTIP Units over a five-year term (for awards granted prior to 2003, vesting is in equal annual installments; for those granted in 2003 through 2006, vesting occurs over a five-year term with annual vesting of 0%, 0%, 25%, 35% and 40%; and for awards granted in 2007, vesting will occur in equal annual installments over a four-year term). Restricted stock and LTIP Units are valued based on observable market prices for similar instruments. Such value is recognized as an expense ratably over the corresponding employee service period. LTIP Units that were issued in January 2005 and all subsequent LTIP Unit awards will be valued using an option pricing model in accordance with the provisions of SFAS No. 123R. To the extent restricted stock or LTIP Units are forfeited prior to vesting, the corresponding previously recognized expense is reversed as an offset to “stock-based compensation.” Stock-based compensation associated with approximately $11.4 million of restricted stock and LTIP Units granted in January 2005 and approximately $11.3 million of restricted stock and LTIP Units granted in April 2006 will be incurred ratably as such restricted stock and LTIP Units vest.

Interest Expense

Interest expense for the Total Property Portfolio decreased approximately $9.8 million for the year ended December 31, 2006 compared to 2005. The majority of the decreases are due to (1) the repayment of outstanding mortgage debt in connection with the sales of 280 Park Avenue in June 2006, Riverfront Plaza and 100 East Pratt

 

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Street in the second quarter of 2005, and Embarcadero Center West Tower in October 2005, which collectively decreased interest expense by $20.4 million and (2) the repayment of our mortgage loans collateralized by Capital Gallery, Montvale Center, 101 Carnegie Center, 191 Spring Street and 601 and 651 Gateway Boulevard, which decreased interest expense approximately $8.2 million. These decreases were offset by (1) increases of approximately $8.6 million at Times Square Tower due to increasing interest rates (5.85% on December 31, 2006 and 4.87% on December 31, 2005) and the increased principal balance due to the refinancing of the mortgage loan in June 2005, (2) an increase of approximately $12.3 million related to interest paid on the $450 million of 3.75% exchangeable senior notes due 2036 issued in the second quarter of 2006 and (3) a net increase of approximately $1.2 million due to the interest imputed on the unpaid redemption price related to the redemption of the outside members’ equity interest at Citigroup Center to reflect the fair value of debt as well as the impact of placing Seven Cambridge Center into service prior to the repayment of debt. The remaining decrease is attributed to scheduled loan amortization on our outstanding debt.

We expect interest expense to decrease in 2007, taking into account approximately (1) $361 million of debt repayments during 2006, (2) debt defeasance of approximately $254.4 million in connection with the sale of 280 Park Avenue, an increase in capitalized interest due to development projects, offset by interest on our unsecured exchangeable senior notes and the refinancing of our 599 Lexington Avenue mortgage loan.

At December 31, 2006, our variable rate debt consisted of our construction loan at Times Square Tower and our secured borrowings under our unsecured line of credit. The following summarizes our outstanding debt as of December 31, 2006 compared with December 31, 2005:

 

     December 31,  
     2006     2005  
     (dollars in thousands)  

Debt Summary:

    

Balance

    

Fixed rate

   $ 3,889,447     $ 3,952,151  

Variable rate

     711,490       874,103  
                

Total

   $ 4,600,937     $ 4,826,254  
                

Percent of total debt:

    

Fixed rate

     84.54 %     81.89 %

Variable rate

     15.46 %     18.11 %
                

Total

     100.00 %     100.00 %
                

Weighted average interest rate at end of period:

    

Fixed rate

     6.27 %     6.70 %

Variable rate

     5.80 %     4.96 %
                

Total

     6.20 %     6.39 %
                

Depreciation and Amortization

Depreciation and amortization expense for the Total Property Portfolio increased approximately $8.4 million for the year ended December 31, 2006 compared to 2005. The increase in depreciation and amortization consisted of approximately $7.3 million due to the placing in-service of our Seven Cambridge Center development project in the first quarter of 2006 and 12290 Sunrise Valley in the second quarter of 2006, approximately $6.8 million related to the acquisition of Prospect Place on December 30, 2005, 303 Almaden Boulevard on June 30, 2006, 3200 Zanker Road on August 10, 2006 and Four and Five Cambridge Center in November 2006, and approximately $1.4 million related to placing Capital Gallery into service during the third

 

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quarter. The increase was offset by reductions in depreciation and amortization resulting from the sales of 280 Park Avenue in June 2006 and Embarcadero Center West Tower, 100 East Pratt Street and Riverfront Plaza in 2005, which resulted in an aggregate decrease of approximately $14.2 million. Depreciation and amortization in the Same Property Portfolio increased approximately $7.2 million for the year ended December 31, 2006 compared to 2005.

Capitalized Costs

Costs directly related to the development of rental properties are not included in our operating results. These costs are capitalized and included in real estate assets on our Consolidated Balance Sheets and amortized over their useful lives. Capitalized development costs include interest, wages, property taxes, insurance and other project costs incurred during the period of development. Capitalized wages for the year ended December 31, 2006 and 2005 were $7.0 million and $5.9 million, respectively. These costs are not included in the general and administrative expenses discussed above. We expect capitalized wages to increase proportionately with our increased development activity and increased wages into 2007 and 2008. Interest capitalized for the year ended December 31, 2006 and 2005 was $5.9 million and $5.7 million, respectively. These costs are not included in the interest expense referenced above.

Losses from early extinguishments of debt

For the year ended December 31, 2006, in connection with the sale of 280 Park Avenue, we legally defeased the mortgage indebtedness collateralized by the property, totaling approximately $254.4 million. In connection with the legal defeasance of the mortgage indebtedness at 280 Park Avenue, we recognized a loss from early extinguishment of debt totaling approximately $31.4 million consisting of the difference between the value of the U.S. Treasuries and the principal balance of the mortgage loan totaling approximately $28.2 million and the write-off of unamortized deferred financing costs totaling approximately $3.2 million. In addition, we repaid construction financing collateralized by our Seven Cambridge Center property. The construction financing at Seven Cambridge Center totaling approximately $112.5 million was repaid using approximately $7.5 million of available cash and $105.0 million drawn under our Unsecured Line of Credit. There was no prepayment penalty associated with the repayment for Seven Cambridge Center. We recognized losses from early extinguishments of debt totaling approximately $0.5 million consisting of the write-off of unamortized deferred financing costs. We repaid the construction and permanent financing at Capital Gallery totaling approximately $34.0 million and $49.7 million using available cash. We recognized a loss from early extinguishment of debt totaling approximately $0.2 million comprised of a prepayment penalty and the write-off of unamortized deferred finance costs. During 2006, we also repaid the mortgage loan collateralized by our Embarcadero Center Three property located in San Francisco, California totaling approximately $133.4 million, the mortgage loan collateralized by our 191 Spring Street property located in Lexington, Massachusetts totaling approximately $17.9 million, the mortgage loan collateralized by our Montvale Center property located in Gaithersburg, Maryland totaling approximately $6.6 million and the mortgage loan collateralized by our 101 Carnegie Center property located in Princeton, New Jersey totaling approximately $6.6 million. There were no significant prepayment penalties or write-offs of unamortized deferred financing costs related to these repayments.

In connection with the sales of 100 East Pratt Street and Riverfront Plaza in May 2005, we repaid the mortgage loans collateralized by the properties totaling approximately $188 million. For the year ended December 31, 2005, we recognized a loss from early extinguishment of debt totaling approximately $11.0 million, consisting of prepayment fees of approximately $10.8 million and the write-off of unamortized deferred financing costs of approximately $0.2 million. We also recognized a $1.9 million loss from early extinguishment of debt, which relates to the refinancing of our Times Square Tower mortgage loan and the modification on our Unsecured Line of Credit.

Income from Unconsolidated Joint Ventures

On September 15, 2006, a joint venture in which we have a 35% interest sold 265 Franklin Street located in Boston, Massachusetts, at a sale price of approximately $170.0 million. Net cash proceeds totaled approximately

 

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$108.3 million, of which our share was approximately $37.9 million, after the repayment of mortgage indebtedness of approximately $60.8 million and unfunded tenant obligations and other closing costs of approximately $0.9 million. The venture recognized a gain on sale of real estate of approximately $51.4 million, of which our share was approximately $18.0 million, and a loss from early extinguishment of debt of approximately $0.2 million, of which our share was $0.1 million.

Income from discontinued operations

For the year ended December 31, 2006 there were no properties included in discontinued operations. Properties included in discontinued operations for the year ended December 31, 2005 consisted of 40-46 Harvard Street, the Residence Inn by Marriott and Old Federal Reserve.

Minority interest in property partnership

Minority interest in property partnership consists of the outside equity interests in the venture that owns Citigroup Center. This venture was consolidated with our financial results because we exercised control over the entity. Due to the redemption of the minority interest holder’s interest at Citigroup Center on May 31, 2006, minority interest in property partnership will no longer reflect an allocation to the minority interest holder.

Gains on sales of real estate

On June 6, 2006, we sold 280 Park Avenue, a 1,179,000 net rentable square foot Class A office property located in midtown Manhattan, New York, for approximately $1.2 billion. Net proceeds totaled approximately $875 million after legal defeasance of indebtedness secured by the property (consisting of approximately $254.4 million of principal indebtedness and approximately $28.2 million of related defeasance costs) and the payment of transfer taxes, brokers’ fees and other customary closing costs. We recognized at closing a gain on sale of approximately $699.8 million.

Under the purchase and sale agreement, we have also agreed to provide to the buyer fixed monthly revenue support from the closing date until December 31, 2008. The aggregate amount of the revenue support payments will be approximately $22.5 million and has been recorded as a purchase price adjustment and included in Other Liabilities within our Consolidated Balance Sheet. Pursuant to the purchase and sale agreement we also entered into a master lease agreement with the buyer at closing. Under the master lease agreement, we have guaranteed that the buyer will receive at least a minimum amount of base rent from approximately 74,340 square feet of space during the ten-year period following the expiration of the current leases for this space. As of the closing of the sale, leases for this space were scheduled to expire at various times between June 2006 and October 2007. The aggregate amount of base rent we have guaranteed over the entire period from 2006 to 2017 is approximately $67.3 million. For the year ended December 31, 2006, we signed new qualifying leases for 26,681 net rentable square feet of the 74,340 net rentable square foot master lease obligation, resulting in the recognition of approximately $21.0 million of additional gain on sale of real estate. As of December 31, 2006, the master lease obligation totaled approximately $45.8 million. During February 2007, we signed a new qualifying lease for 22,250 net rentable square feet of the remaining 47,659 net rentable square foot master lease obligation, which will result in the recognition of approximately $18.1 million of additional gain on sale of real estate during the first quarter of 2007. As of February 23, 2007, the master lease obligation totaled approximately $27.5 million.

In January 2006, we recognized a $5.7 million gain on the sale of a parcel of land at the Prudential Center located in Boston, Massachusetts which had been accounted for previously as a financing transaction. During January 2006, the transaction qualified as a sale for financial reporting purposes.

 

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Gains on sales of real estate for the year ended December 31, 2005 in the Total Property Portfolio primarily relate to the sales of Riverfront Plaza and 100 East Street which are not included in discontinued operations due to our continuing involvement in the management, for a fee, of these properties after the sales. In addition, the sale of Decoverly Four and Five, consisting of two undeveloped land parcels located in Rockville, Maryland are included in gains on sales of real estate and other assets for the year ended December 31, 2005.

Gains on sales of real estate from discontinued operations

Gains on sales of real estate from discontinued operations for the year ended December 31, 2005 in the Total Property Portfolio relate to the sale of Old Federal Reserve in April 2005, Residence Inn by Marriott and 40-46 Harvard Street, both which were sold in November 2005.

Cumulative effect of a change in accounting principle

In March 2005, the FASB issued Interpretation No. 47, “Accounting for Conditional Asset Retirement Obligations, an interpretation of FASB Statement No. 143” (“FIN 47”). FIN 47 clarifies that the term “conditional asset retirement obligation” as used in FASB Statement No. 143, “Accounting for Asset Retirement Obligations,” refers to a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement are conditional on a future event that may or may not be within the control of the entity. At December 31, 2005, we recognized a liability for the fair value of the asset retirement obligation aggregating approximately $7.1 million, which amount is included in “Accounts Payable and Accrued Expenses” on our Consolidated Balance Sheets. In addition, we have recognized the cumulative effect of adopting FIN 47, totaling approximately $5.0 million, which amount is included in “Cumulative Effect of a Change in Accounting Principle” on our Consolidated Statements of Operations for the year ended December 31, 2005.

Preferred distributions and allocation of undistributed earnings

Preferred distributions and Allocation of Undistributed Earnings decreased approximately $4.0 million for the year ended December 31, 2006, compared to the year ended December 31, 2005. In connection with the special cash distribution declared in July 2005, holders of Series Two Preferred Units participated in the special distribution on as converted basis in connection with their regular February 2006 distribution payment as provided for in our partnership agreement. In connection with the special cash distribution declared in December 2006, holders of Series Two Preferred Units are entitled to participate in the special distribution on an as converted basis in connection with their regular May 2007 distribution payment. As a result, we accrued approximately $12.2 million and $12.1 million related to the special cash distribution payable to holders of the Series Two Preferred Units and have allocated earnings to the Series Two Preferred Units of approximately $12.2 million and $12.1 million for the years ended December 31, 2006 and 2005, respectively, which amount has been reflected in Preferred Distributions and Allocation of Undistributed Earnings for the years ended December 31, 2006 and 2005. This increase was offset by a reduction in the preferred distributions due to conversions of Series Two Preferred Units and a reduction in the allocation of undistributed earnings.

Comparison of the year ended December 31, 2005 to the year ended December 31, 2004

The table below shows selected operating information for the Same Property Portfolio and the Total Property Portfolio. The Same Property Portfolio consists of 109 properties, including two hotels and three properties in which we have joint venture interests, acquired or placed in-service on or prior to January 1, 2004 and owned by us through December 31, 2005. The Total Property Portfolio includes the effect of the other properties either placed in-service, acquired or repositioned after January 1, 2004 or disposed of on or prior to December 31, 2005. This table includes a reconciliation from Same Property Portfolio to Total Property Portfolio by also providing information for the properties which were sold, acquired, placed in-service or repositioned during the years ended December 31, 2005 and 2004. Our net property operating margins for the Total Property Portfolio, which are defined as rental revenue less operating expenses, exclusive of the two hotel properties, for the years ended December 31, 2005 and 2004, were 68.8% and 69.2%, respectively.

 

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    Same Property Portfolio    

Properties

Sold

 

Properties

Acquired

    Properties Placed
In-Service
  Properties
Repositioned
  Total Property Portfolio  
(dollars in thousands)   2005   2004  

Increase/

(Decrease)

    %
Change
    2005   2004   2005   2004     2005   2004   2005   2004   2005     2004    

Increase/

(Decrease)

    %
Change
 

Rental Revenue:

                               

Rental Revenue

  $ 1,176,006   $ 1,147,496   $ 28,510     2.48 %   $ 32,247   $ 63,067   $ 26,503   $ 19,344     $ 79,703   $ 40,873   $ 13,094   $ 14,369   $ 1,327,553     $ 1,285,149     $ 42,404     3.30 %

Termination Income

    11,311     3,982     7,329     184.05 %     —       9     —       —         169     —       —       —       11,480       3,991       7,489     187.65 %
                                                                                                         

Total Rental Revenue

    1,187,317     1,151,478     35,839     3.11 %     32,247     63,076     26,503     19,344       79,872     40,873     13,094     14,369     1,339,033       1,289,140       49,893     3.87 %
                                                                                                         

Real Estate Operating Expenses

    403,964     380,678     23,286     6.12 %     12,399     22,706     5,665     4,198       12,884     4,474     3,423     4,271     438,335       416,327       22,008     5.29 %
                                                                                                         

Net Operating Income, excluding hotels

    783,353     770,800     12,553     1.63 %     19,848     40,370     20,838     15,146       66,988     36,399     9,671     10,098     900,698       872,813       27,885     3.19 %
                                                                                                         

Hotel Net Operating Income (1)

    17,588     16,985     603     3.55 %     —       —       —       —         —       —       —       —       17,588       16,985       603     3.55 %
                                                                                                         

Consolidated Net Operating Income (1)

    800,941     787,785     13,156     1.67 %     19,848     40,370     20,838     15,146       66,988     36,399     9,671     10,098     918,286       889,798       28,488     3.20 %
                                                                                                         

Other Revenue:

                               

Development and Management services

    —       —       —       —         —       —       —       —         —       —       —       —       17,310       20,440       (3,130 )   (15.31 )%

Interest and Other

    —       —       —       —         —       —       —       —         —       —       —       —       12,015       10,339       1,676     16.21 %
                                                                                                         

Total Other Revenue

    —       —       —       —         —       —       —       —         —       —       —       —       29,325       30,779       (1,454 )   (4.72 )%

Other Expenses:

                               

General and administrative

    —       —       —       —         —       —       —       —         —       —       —       —       55,471       53,636       1,835     3.42 %

Interest

    —       —       —       —         —       —       —       —         —       —       —       —       308,091       306,170       1,921     0.63 %

Depreciation and amortization

    232,290     218,446     13,844     6.34 %     5,983     12,791     5,497     3,850       18,757     7,909     1,655     4,928     264,182       247,924       16,258     6.56 %

Losses from early extinguishments of debt

    —       —       —       —         —       —       —       —         —       —       —       —       12,896       6,258       6,638     106.07 %
                                                                                                         

Total Other Expenses

    232,290     218,446     13,844     6.34 %     5,983     12,791     5,497     3,850       18,757     7,909     1,655     4,928     640,640       613,988       26,652     4.34 %

Income before joint ventures

  $ 568,651   $ 563,339     5,312     0.94 %   $ 13,865   $ 27,579   $ 15,341   $ 11,296     $ 48,231   $ 28,490   $ 8,016   $ 5,170   $ 306,971     $ 306,589     $ 382     0.12 %

Income from unconsolidated joint ventures

  $ 2,602   $ 3,054   $ (452 )   (14.80 )%   $ —     $ 304   $ 103   $ (32 )   $ 2,124   $ 54     —       —       4,829       3,380       1,449     42.87 %
                                                                                   

Income from discontinued operations

  $ —     $ —       —       —       $ 2,279   $ 4,030     —       —         —       —       —       —       2,279       4,030       (1,751 )   (43.45 )%

Minority interests in property partnerships

                            6,017       4,685       1,332     28.43 %

Gains on sales of real estate

                            188,546       9,822       178,724     1,819.63 %

Gains on sales of real estate from discontinued operations

                            57,969       33,427       24,542     73.42 %

Cumulative effect of a change in accounting principle

                            (5,043 )     —         (5,043 )   (100.0 )%

Preferred distributions and allocation of undistributed earnings

                            (26,780 )     (17,133 )     (9,647 )   56.31 %
                                                     

Net Income available to common unitholders

                          $ 534,788     $ 344,800       $189,988     55.10 %
                                                     

(2) For a detailed discussion of NOI, including the reasons management believes NOI is useful to investors, see page 43. Hotel Net Operating Income for the years ended December 31, 2005 and 2004 are comprised of Hotel Revenue of $69,277 and $66,427 less Hotel Expenses of $51,689 and $49,442, respectively per the Consolidated Income Statement.

 

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Rental Revenue

The increase of $42.4 million in the Total Property Portfolio is comprised of increases and decreases within the five categories that represent our Total Property Portfolio. Rental revenue from Properties Placed In-Service increased approximately $38.8 million, Same Property Portfolio increased approximately $28.5 million, Properties Acquired increased approximately $7.2 million, Properties Sold decreased approximately $30.8 million and Properties Repositioned decreased approximately $1.3 million.

The increase in rental revenue from Properties Placed In-Service relates to placing in-service Times Square Tower and New Dominion Technology Park, Building Two during the third quarter of 2004, and the West Garage phase of our Seven Cambridge Center development in the fourth quarter of 2005 as detailed below:

 

    

Date Placed-in-service

   Rental Revenue for the year ended

Property

          2005            2004            Change    
          (in thousands)

Times Square Tower

   3rd Quarter 2004    $ 69,608    $ 36,470    $ 33,138

New Dominion Technology Park, Building Two

   3rd Quarter 2004      9,683      4,403      5,280

West Garage

   4th Quarter 2005      412      —        412
                       

Total

      $ 79,703    $ 40,873    $ 38,830
                       

Rental revenue from the Same Property Portfolio increased approximately $28.5 million from 2004. Included in rental revenue is an overall increase in base rental revenue of approximately $8.9 million due to increases in our occupancy from 92.1% on December 31, 2004 to 93.8% on December 31, 2005 which was offset by a roll-down in market rents. Straight-line rent increased approximately $6.5 million for the year ended December 31, 2005 compared to December 31, 2004. Approximately $13.6 million of the increase from the Same Property Portfolio was due to an increase in recoveries from tenants attributed to higher operating expenses.

The acquisition of Prospect Place on December 30, 2005, 1330 Connecticut Avenue on April 1, 2004 and the purchase of the remaining interest in 140 Kendrick Street on March 24, 2004 increased revenue from Properties Acquired by approximately $7.2 million, as detailed below:

 

          Rental Revenue for the year ended

Property

  

Date Acquired

       2005            2004            Change    
          (in thousands)

1330 Connecticut Avenue

   April 1, 2004    $ 14,860    $ 10,870    $ 3,990

140 Kendrick Street

   March 24, 2004      11,614      8,474      3,140

Prospect Place

   December 30, 2005      29      —        29
                       

Total

      $ 26,503    $ 19,344    $ 7,159
                       

 

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The aggregate increase in rental revenue was offset by the sales of Embarcadero Center West Tower, Riverfront Plaza and 100 East Pratt Street during 2005, and Hilltop Office Center during 2004. These properties have not been classified as discontinued operations due to our continuing involvement as the property manager for each property. Revenue from Properties Sold decreased by approximately $30.8 million, as detailed below:

 

          Rental Revenue for the year ended  

Property

  

Date Sold

       2005            2004            Change      
          (in thousands)  

Embarcadero Center West Tower

   December 14, 2005    $ 15,081    $ 17,837    $ (2,756 )

Riverfront Plaza

   May 16, 2005      8,760      23,488      (14,728 )

100 East Pratt Street

   May 12, 2005      8,406      21,602      (13,196 )

Hilltop Office Center

   February 4, 2004      —        140      (140 )
                         

Total

      $ 32,247    $ 63,067    $ (30,820 )
                         

In September 2004, we commenced the redevelopment of our Capital Gallery property in Washington, D.C. Capital Gallery is a Class A office property totaling approximately 397,000 square feet. The project entailed removing a three-story low-rise section of the property comprised of 100,000 square feet from in-service status and developing it into a 10-story office building resulting in a total complex size of approximately 610,000 square feet. This property is included in Properties Repositioned for the year ended December 31, 2005 and 2004. Rental revenue has decreased for the year ended December 31, 2005 due to taking the three-story low rise out of service in September 2004.

Termination Income

Termination income for the year ended December 31, 2005 was related to twenty-three tenants across the Total Property Portfolio that terminated their leases, and we recognized termination income totaling approximately $11.5 million. This compared to termination income earned for the year ended December 31, 2004 related to nineteen tenants totaling $4.0 million. During 2005 we completed several leasing transactions which involved taking space back from tenants with resulting termination income and releasing the space at higher rents.

Real Estate Operating Expenses

The $22.0 million increase in property operating expenses in the Total Property Portfolio (real estate taxes, utilities, insurance, repairs and maintenance, cleaning and other property-related expenses) is comprised of increases and decreases within the five categories that represent our Total Property Portfolio. Operating expenses for the Same Property Portfolio increased approximately $23.3 million, Properties Placed in-service increased approximately $8.4 million, Properties Acquired increased approximately $1.4 million, Properties Sold decreased approximately $10.3 million and Properties Repositioned decreased approximately $0.8 million.

Operating expenses from the Same Property Portfolio increased approximately $23.3 million for the year ended December 31, 2005 compared to 2004. Included in Same Property Portfolio operating expenses is an increase in utility expenses of approximately $10.2 million, an increase of approximately 14% over the prior year utility expense. In addition, real estate taxes increased approximately $7.9 million due to increased real estate tax assessments, with approximately half of this increase specifically attributed to properties located in New York City. The remaining $5.2 million increase in the Same Property Portfolio operating expenses are related to an increase to repairs and maintenance.

 

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We placed in-service Times Square Tower and New Dominion Technology Park, Building Two during the third quarter of 2004 and the West Garage phase of our Seven Cambridge Center development in the fourth quarter of 2005 increasing operating expenses by approximately $8.4 million as detailed below:

 

    

Date Placed-in- service

   Operating Expenses for the
year ended

Property

          2005            2004            Change    
          (in thousands)

Times Square Tower

   3rd Quarter 2004    $ 11,168    $ 4,053    $ 7,115

New Dominion Technology Park Building Two

   3rd Quarter 2004      1,595      421      1,174

West Garage

   4th Quarter 2005      121      —        121
                       

Total

      $ 12,884    $ 4,474    $ 8,410
                       

In addition, approximately $1.4 million of the increase in Total Property Portfolio operating expenses primarily relates to the acquisitions of Prospect Place at the end of 2005 as well as our acquisitions in 2004 of 1330 Connecticut Avenue and the remaining interest in 140 Kendrick Street, as detailed below:

 

          Operating Expenses for the
year ended

Property

  

Date Acquired

       2005            2004            Change    
          (in thousands)

1330 Connecticut Avenue

   April 1, 2004    $ 4,220    $ 2,986    $ 1,234

140 Kendrick Street

   March 24, 2004      1,427      1,212      215

Prospect Place

   December 30, 2005      18      —        18
                       

Total

      $ 5,665    $ 4,198    $ 1,467
                       

A decrease of approximately $10.3 million in Total Property Portfolio operating expenses relates to the sales of Embarcadero Center West Tower, 100 East Pratt Street and Riverfront Plaza in 2005, and Hilltop Office Center in 2004, as detailed below:

 

         

Operating Expenses for the

year ended

 

Property

  

Date Sold

       2005            2004            Change      
          (in thousands)  

Embarcadero Center West Tower

   December 14, 2005    $ 6,516    $ 6,866    $ (350 )

100 East Pratt Street

   May 12, 2005      3,019      8,039      (5,020 )

Riverfront Plaza

   May 16, 2005      2,864      7,764      (4,900 )

Hilltop Office Center

   February 4, 2004      —        37      (37 )
                         

Total

      $ 12,399    $ 22,706    $ (10,307 )
                         

Hotel Net Operating Income

Net operating income for the hotel properties increased by approximately $0.6 million for the year ended December 31, 2005 compared to 2004. For the years ended December 31, 2005 and 2004 the Residence Inn by Marriott was included as part of discontinued operations due to its sale on November 4, 2005.

The following reflects our occupancy and rate information for our hotel properties for the year ended December 31, 2005 and 2004. This information excludes the Residence Inn by Marriott due to its sale on November 4, 2005.

 

     2005     2004     Percentage
Change
 

Occupancy

     77.4 %     80.0 %   (3.2 )%

Average daily rate

   $ 197.82     $ 185.42     6.7 %

Revenue per available room, REVPAR

   $ 153.95     $ 149.04     3.3 %

 

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Development and Management Services

Our third-party fee income decreased approximately $3.1 million for the year ended December 31, 2005 compared to 2004 due to the completion of third-party development projects at the National Institute of Health in Washington, D.C. and near completion of our project at 90 Church Street in New York City, partially offset by maintaining management contracts in connection with certain of our asset sales. For the year ended December 31, 2005, development fees decreased approximately $4.9 million, offset by an increase in management fees and service income of approximately $1.8 million.

Interest and Other Income

Interest and other income increased by approximately $1.7 million for the year ended December 31, 2005 compared to 2004. In the first quarter of 2004 we recognized a net amount of approximately $7.0 million of other income in connection with the termination by a third-party of an agreement to enter into a ground lease with us. Excluding this termination, interest and other income increased approximately $8.6 million for the year ended December 31, 2005 compared to 2004 due to higher cash balances as well as higher interest rates during 2005 compared to 2004.

Other Expenses

General and Administrative

General and administrative expenses increased approximately $1.8 million for the year ended December 31, 2005 compared to 2004. Approximately $2.2 million of the increase was attributable to changes in the form of long-term equity-based compensation, as further described below. In addition, there was an overall increase to bonuses and salaries for the year ended December 31, 2005. These increases were offset by a decrease of approximately $2.8 million attributable to a refund of prior year state taxes based on income and net worth as a result of changes to a state tax law.

Commencing in 2003, Boston Properties, Inc. issued restricted stock and/or LTIP Units, as opposed to granting stock options and restricted stock, under Boston Properties, Inc.’s 1997 Stock Option and Incentive Plan as Boston Properties, Inc.’s primary vehicle for employee equity compensation. An LTIP Unit is generally the economic equivalent of a share of Boston Properties, Inc.’s restricted stock. Employees generally vest in restricted stock and LTIP Units over a five-year term (for awards granted prior to 2003, vesting occurs in equal annual installments; for those granted in 2003 and beyond, vesting occurs over a five-year term with annual vesting of 0%, 0%, 25%, 35% and 40%). Restricted stock and LTIP Units are valued based on observable market prices for similar instruments. Such value is recognized as an expense ratably over the corresponding employee service period. To the extent restricted stock or LTIP Units are forfeited prior to vesting, the corresponding previously recognized expense is reversed as an offset to “stock-based compensation.” Stock-based compensation expense associated with $6.1 million of equity-based compensation that was granted in January 2003 will generally be expensed ratably as such restricted stock and LTIP Units vests over a five-year vesting period. Stock-based compensation associated with approximately $9.7 million of restricted stock and LTIP Units granted in January 2004 and approximately $11.4 million of restricted stock and LTIP Units granted in January 2005 will also be incurred ratably as such restricted stock and LTIP Units vest.

Interest Expense

Interest expense for the Total Property Portfolio increased approximately $1.9 million for the year ended December 31, 2005 compared to 2004. The majority of the increases are due to (1) the cessation of interest capitalization at Times Square Tower and New Dominion Technology Park, Building Two, which increased interest expense by $14.9 million, and (2) the assumption of debt in connection with the acquisition of the remaining interest in 140 Kendrick Street and 1330 Connecticut Avenue in the second quarter of 2004, which increased interest expense by $1.3 million. These increases were offset by (1) the repayment of outstanding mortgage debt in connection with the sales of Riverfront Plaza and 100 East Pratt Street in the second quarter of 2005, as well as Embarcadero Center West Tower in October 2005, which decreased interest expense by $9.7 million, and (2) the repayment of mortgage debt at One and Two Reston Overlook and the 12300 and 12310

 

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Sunrise Valley Drive buildings in the beginning of 2004 which decreased interest expense by $1.4 million. In addition, the impact of refinancing our fixed rate debt collateralized by 599 Lexington Avenue using borrowings under our unsecured line at a lower interest rate decreased interest expense approximately $3.0 million.

At December 31, 2005, our variable rate debt consisted of our construction loans on our Times Square Tower, Capital Gallery Expansion and Seven Cambridge Center construction projects, as well as our borrowings under our unsecured line of credit. The following summarizes our outstanding debt as of December 31, 2005 compared with December 31, 2004:

 

     December 31,  
     2005     2004  
     (dollars in thousands)  

Debt Summary:

    

Balance

    

Fixed rate

   $ 3,952,151     $ 4,588,024  

Variable rate

     874,103       423,790  
                

Total

   $ 4,826,254     $ 5,011,814  
                

Percent of total debt:

    

Fixed rate

     81.89 %     91.54 %

Variable rate

     18.11 %     8.46 %
                

Total

     100.00 %     100.00 %
                

Weighted average interest rate at end of period:

    

Fixed rate

     6.70 %     6.66 %

Variable rate

     4.96 %     3.36 %
                

Total

     6.39 %     6.38 %
                

Depreciation and Amortization

Depreciation and amortization expense for the Total Property Portfolio increased approximately $16.3 million for the year ended December 31, 2005 compared to 2004. Depreciation and amortization from Properties Placed In-Service increased approximately $10.8 million, Properties Acquired increased approximately $1.6 million, the Same Property Portfolio increased approximately $13.8 million, Properties Sold decreased approximately $5.2 million and Properties Repositioned decreased approximately $3.3 million. In connection with the redevelopment project at Capital Gallery, which is classified as Properties Repositioned, we recognized an accelerated depreciation charge of approximately $2.6 million in the third quarter of 2004 representing the net book value of the portion of the three-story, low-rise section of the building being redeveloped.

 

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The additions to the Total Property Portfolio through acquisitions increased depreciation and amortization expense by approximately $1.6 million, as detailed below:

 

         

Depreciation and Amortization

for the year ended

Property

  

Acquired

       2005            2004            Change    
          (in thousands)

1330 Connecticut Avenue

   April 1, 2004    $ 3,470    $ 2,292      1,178

140 Kendrick Street

   March 24, 2004      2,027      1,558      469
                       

Total

      $ 5,497    $ 3,850    $ 1,647
                       

The additions to the Total Property Portfolio through placing properties in-service increased depreciation and amortization expense by approximately $10.8 million, as detailed below:

 

         

Depreciation and Amortization

for the year ended

Property

  

Placed in-service

       2005            2004            Change    
          (in thousands)

Times Square Tower

   3rd Quarter 2004    $ 16,957    $ 7,066    $ 9,891

New Dominion Technology Park, Building Two

   3rd Quarter 2004      1,706      843      863

West Garage

   4th Quarter 2005      94      —        94
                       

Total

      $ 18,757    $ 7,909    $ 10,848
                       

Capitalized Costs

Costs directly related to the development of rental properties are not included in our operating results. These costs are capitalized and included in real estate assets on our Consolidated Balance Sheets and amortized over their useful lives. Capitalized development costs include interest, wages, property taxes, insurance and other project costs incurred during the period of development. Capitalized wages for the years ended December 31, 2005 and 2004 was $5.9 million. These costs are not included in the general and administrative expenses discussed above. Interest capitalized for the year ended December 31, 2005 and 2004 was $5.7 million and $10.8 million, respectively. These costs are not included in the interest expense referenced above. During the third quarter of 2004, we placed in-service Times Square Tower and New Dominion Technology Park, Building Two development projects and ceased capitalizing the related interest in accordance with our capitalization policy.

Losses from early extinguishments of debt

For the year ended December 31, 2005, we recognized a loss from early extinguishment of debt totaling approximately $12.9 million. In connection with the sales of 100 East Pratt Street and Riverfront Plaza, we repaid the mortgage loans collateralized by the properties totaling approximately $188 million. For the year ended December 31, 2005, we recognized a loss from early extinguishment of debt totaling approximately $11.0 million, consisting of prepayment fees of approximately $10.8 million and the write-off of unamortized deferred financing costs of approximately $0.2 million. We also recognized a $1.9 million loss from early extinguishment of debt which relates to the refinancing of our Times Square Tower mortgage loan which is included in Properties placed in-service, as well as the modification of our unsecured line of credit.

For the year ended December 31, 2004, we recognized a loss from early extinguishment of debt totaling approximately $6.3 million related to the repayments of our mortgage loans collateralized by One and Two Reston Overlook and the 12300 and 12310 Sunrise Valley Drive buildings.

 

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Joint Ventures

During the first quarter of 2005, we placed in-service 901 New York Avenue, a 539,000 net rentable square foot Class A office property located in Washington, D.C., in which we have a 25% ownership interest. The addition of this property contributed approximately $2.1 million to joint venture income for the year ended December 31, 2005.

Income from discontinued operations

The decrease in income from discontinued operations in the Total Property Portfolio for the year ended December 31, 2005 was a result of properties sold or designated as held for sale during 2005 and 2004 which are no longer included in our operations as of December 31, 2005. Below is a list of properties included in discontinued operations for the years ended December 31, 2005 and 2004:

 

Year ended December 31, 2005

  

Year ended December 31, 2004

Old Federal Reserve

  

Old Federal Reserve

40-46 Harvard Street

  

40-46 Harvard Street

Residence Inn by Marriott

  

Residence Inn by Marriott

  

Sugarland Business Park—Building One

  

204 Second Avenue

  

560 Forbes Boulevard

  

Decoverly Two, Three, Six and Seven

  

38 Cabot Boulevard

  

The Arboretum

  

430 Rozzi Place

  

Sugarland Business Park—Building Two

Gains on sales of real estate and other assets

Gains on sales of real estate for the year ended December 31, 2005 in the Total Property Portfolio relate to the sales of Riverfront Plaza, 100 East Pratt Street and Embarcadero Center West Tower which are not included in discontinued operations due to our continuing involvement in the management, for a fee, of these properties after the sales. Also included in gains on sale of real estate for the year ended December 31, 2005 is the sale of Decoverly Four and Five, consisting of two undeveloped land parcels located in Rockville, Maryland.

Gains on sales of real estate for the year ended December 31, 2004 in the Total Property Portfolio relate to the sale of Hilltop Office Center and a land parcel in Burlington, MA. Hilltop Office Center is not included in discontinued operations due to our continuing involvement in the management, for a fee, of this property after the sale.

Gains on sales of real estate from discontinued operations

Properties included in our gains on sales of real estate from discontinued operations for the year ended December 31, 2005 and 2004 in the Total Property Portfolio are shown below:

 

Year ended December 31, 2005

  

Date Disposed

  

Year ended December 31, 2004

  

Date Disposed

Old Federal Reserve

  

April 2005

  

430 Rozzi Place

  

January 2004

Residence Inn by Marriott

  

November 2005

  

Sugarland Business Park—Building Two

  

February 2004

40-46 Harvard Street

  

November 2005

  

Decoverly Two, Three, Six and Seven

  

April 2004

     

The Arboretum

  

April 2004

     

38 Cabot Boulevard

  

May 2004

     

Sugarland Business Park—Building One

  

August 2004

     

204 Second Avenue

  

September 2004

     

560 Forbes Boulevard

  

December 2004

 

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Cumulative effect of a change in accounting principle

In March 2005, the FASB issued Interpretation No. 47, “Accounting for Conditional Asset Retirement Obligations, an interpretation of FASB Statement No. 143” (“FIN 47”). FIN 47 clarifies that the term “conditional asset retirement obligation” as used in FASB Statement No. 143, “Accounting for Asset Retirement Obligations,” refers to a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement are conditional on a future event that may or may not be within the control of the entity. At December 31, 2005, we recognized a liability for the fair value of the asset retirement obligation aggregating approximately $7.1 million, which amount is included in “Accounts Payable and Accrued Expenses” on our Consolidated Balance Sheets. In addition, we have recognized the cumulative effect of adopting FIN 47, totaling approximately $5.0 million, which amount is included in “Cumulative Effect of a Change in Accounting Principle” on our Consolidated Statements of Operations for the year ended December 31, 2005.

Preferred distributions and allocation of undistributed earnings

Preferred distributions and Allocation of Undistributed Earnings increased approximately $9.6 million for the year ended December 31, 2005, compared to the year ended December 31, 2004. In connection with the special cash distribution declared in July 2005, holders of Series Two Preferred Units participated in the special distribution on as converted basis in connection with their regular February 2006 distribution payment as provided for in our partnership agreement. As a result, we accrued approximately $12.1 million related to the special cash distribution payable to holders of the Series Two Preferred Units and have allocated earnings to the Series Two Preferred Units of approximately $12.1 million, which amount has been reflected in Preferred Distributions and Allocation of Undistributed Earnings for the year ended December 31, 2005. This increase was partially offset by a reduction in the preferred distributions due to conversions of Series Two Preferred Units and a reduction in the allocation of undistributed earnings.

Liquidity and Capital Resources

General

Our principal liquidity needs for the next twelve months are to:

 

   

fund normal recurring expenses;

 

   

meet debt service requirements;

 

   

fund capital expenditures, including tenant improvements and leasing costs;

 

   

fund current development costs not covered under construction loans;

 

   

fund new property acquisitions; and

 

   

make the minimum distribution required to assist Boston Properties, Inc., our general partner, to maintain its REIT qualification under the Internal Revenue Code of 1986, as amended.

On December 15, 2006, Boston Properties, Inc., as our general partner, declared a special cash distribution of $5.40 per common partnership unit and LTIP unit payable on January 30, 2007 to unitholders of record as of the close of business on December 29, 2006. The decision to declare a special distribution was the result of the sales of assets in 2006, including 280 Park Avenue and 265 Franklin Street. We did not make any change in our policy with respect to regular quarterly distributions. The payment of the regular quarterly distribution of $0.68 per unit and the special distribution of $5.40 per unit resulted in a total payment of $6.08 per unit on January 30, 2007.

We believe that our liquidity needs will be satisfied using cash on hand, cash flows generated by operations and provided by financing activities, as well as cash generated from asset sales. Base rental revenue, recovery income from tenants, other income from operations, available cash balances, draws on our unsecured line of

 

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credit and refinancing of maturing indebtedness are our principal sources of capital used to pay operating expenses, debt service, recurring capital expenditures and the minimum distribution required to maintain Boston Propertis, Inc.’s REIT qualification. We seek to increase income from our existing properties by maintaining quality standards for our properties that promote high occupancy rates and permit increases in rental rates while reducing tenant turnover and controlling operating expenses. Our sources of revenue also include third-party fees generated by our office real estate management, leasing, development and construction businesses. Consequently, we believe our revenue, together with proceeds from financing activities, will continue to provide the necessary funds for our short-term liquidity needs. However, material changes in these factors may adversely affect our net cash flows. Such changes, in turn, could adversely affect our ability to fund distributions, debt service payments and tenant improvements. In addition, a material adverse change in our cash provided by operations may affect our ability to comply with the financial performance covenants under our unsecured line of credit and unsecured senior notes.

Our principal liquidity needs for periods beyond twelve months are for the costs of developments, possible property acquisitions, scheduled debt maturities, major renovations, expansions and other non-recurring capital improvements. We expect to satisfy these needs using one or more of the following:

 

   

construction loans;

 

   

long-term secured and unsecured indebtedness (including unsecured exchangeable indebtedness);

 

   

income from operations;

 

   

income from joint ventures;

 

   

sales of real estate;

 

   

issuances of additional common units and/or units; and

 

   

our unsecured revolving line of credit or other short-term bridge facilities.

We draw on multiple financing sources to fund our long-term capital needs. Our unsecured line of credit is utilized primarily as a bridge facility to fund acquisition opportunities, to refinance outstanding indebtedness and to meet short-term development and working capital needs. We generally fund our development projects with construction loans until project completion or lease-up thresholds are achieved.

To the extent that we continue to sell assets and cannot efficiently use the proceeds for either our development activities or attractive acquisitions, we would, at the appropriate time, decide whether it is better to declare a special dividend, adopt a stock repurchase program, reduce our indebtedness or retain the cash for future investment opportunities. Such a decision will depend on many factors including, among others, the timing, availability and terms of development and acquisition opportunities, our then-current and anticipated leverage, the price of Boston Properties, Inc.’s common stock and REIT distribution requirements. At a minimum, we expect that we would distribute at least that amount of proceeds necessary for Boston Properties, Inc. to avoid paying corporate level tax on the applicable gains realized from any asset sales.

 

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Cash Flow Summary

The following summary discussion of our cash flows is based on the consolidated statements of cash flows in “Item 8. Financial Statements and Supplementary Data” and is not meant to be an all-inclusive discussion of the changes in our cash flows for the periods presented below.

Cash and cash equivalents were $725.8 million and $261.5 million at December 31, 2006 and December 31, 2005, respectively, representing an increase of $464.3 million. The increase was a result of the following increases and decreases in cash flows:

 

     Years ended December 31,  
     2006     2005     Increase
(Decrease)
 
     (in thousands)  

Net cash provided by operating activities

   $ 527,979     $ 472,249     $ 55,730  

Net cash provided by investing activities

   $ 229,756     $ 356,605     $ (126,849 )

Net cash used in financing activities

   $ (293,443 )   $ (806,702 )   $ 513,259  

Our principal source of cash flow is related to the operation of our office properties. The average term of our tenant leases is approximately 7.8 years with occupancy rates historically in the range of 92% to 98%. Our properties provide a relatively consistent stream of cash flow that provides us with resources to pay operating expenses, debt service and fund quarterly dividend and distribution payment requirements. In addition, over the past year, we have raised capital through the sale of some of our properties and raised proceeds from secured and unsecured borrowings.

For the year ended December 31, 2006 our cash flows from operating activities exceeded our distributions. During the year ended December 31, 2005, we paid a special cash distribution of approximately $335.7 million, which cash flows had been generated from sales of real estate assets and which proceeds are not included in cash flows from operating activities. As a result, our total distributions exceeded our total cash flows from operating activities for the year ended December 31, 2005. In 2007, we expect our total distributions to exceed our cash flow from operating activities due to the special distribution which was declared in December 2006 and paid to common unitholders on January 30, 2007. The cash flows distributed were generated from sales of real estate assets and which proceeds are included as part of cash flows from investment activities. Distributions will generally exceed cash flows from operating activities during periods in which we sell significant real estate assets and distribute gains on sale that would otherwise be taxable.

Cash is used in investing activities to fund acquisitions, development and recurring and nonrecurring capital expenditures. We selectively invest in new projects that enable us to take advantage of our development, leasing, financing and property management skills and invest in existing buildings that meet our investment criteria. Cash provided by investing activities for the twelve months ended December 31, 2006 consisted of the following:

 

     (in thousands)  

Net proceeds from the sales of real estate

   $ 1,130,978  

Net investments in unconsolidated joint ventures

     23,566  

The cash provided by these investing activities is offset by:

  

Investments in marketable securities

     (282,764 )

Recurring capital expenditures

     (14,417 )

Planned non-recurring capital expenditures associated with acquisition properties

     (2,237 )

Hotel improvements, equipment upgrades and replacements

     (6,756 )

Acquisitions/additions to real estate

     (618,614 )
        

Net cash provided by investing activities

   $ 229,756  
        

Cash used in financing activities for the year ended December 31, 2006 totaled approximately $293.4 million. This consisted primarily of net repayments of our secured and unsecured indebtedness totaling

 

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approximately $424.3 million and payments of distributions to our securityholders totaling approximately $391.6 million. The decreases were partially offset by the proceeds of $450 million from our April/May 2006 offering of 3.75% exchangeable senior notes due 2036, net proceeds from equity transactions of approximately $63.4 million and net proceeds from a real estate financing transaction totaling approximately $15.2 million. Future debt payments are discussed below under the heading “Debt Financing.”

Capitalization

At December 31, 2006, our total consolidated debt was approximately $4.6 billion. The weighted-average annual interest rate on our consolidated indebtedness was 6.20% and the weighted-average maturity was approximately 4.7 years.

Debt to total market capitalization ratio, defined as total consolidated debt as a percentage of the market value of our outstanding equity securities plus our total consolidated debt, is a measure of leverage commonly used by analysts in the REIT sector. Our total market capitalization was approximately $20.4 billion at December 31, 2006. Total market capitalization was calculated using Boston Properties, Inc.’s December 29, 2006 closing stock price of $111.88 per common share and the following: (1) 117,503,542 shares of Boston Properties, Inc.’s common stock, (2) 20,817,587 outstanding common units of BPLP (excluding common units held by Boston Properties, Inc.), (3) an aggregate of 2,256,208 common units issuable upon conversion of all outstanding preferred units, (4) an aggregate of 521,119 common units issuable upon conversion of all outstanding LTIP units, assuming all conditions have been met for the conversion of the LTIP units, and (5) our consolidated debt totaling approximately $4.6 billion. Our total consolidated debt at December 31, 2006 represented approximately 22.57% of our total market capitalization. This percentage will fluctuate with changes in the value of our common units (and therefore with changes in the value of Boston Properties, Inc.’s common stock) and does not necessarily reflect our capacity to incur additional debt to finance our activities or our ability to manage our existing debt obligations. However, for a company like ours, whose assets are primarily income-producing real estate, the debt to total market capitalization ratio may provide investors with an alternate indication of leverage, so long as it is evaluated along with other financial ratios and the various components of our outstanding indebtedness.

 

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Debt Financing

As of December 31, 2006, we had approximately $4.6 billion of outstanding indebtedness, representing 22.57% of our total market capitalization as calculated above under the heading “Capitalization,” consisting of (1) $1.5 billion in publicly traded unsecured debt having a weighted average interest rate of 5.95% and maturities in 2013 and 2015; (2) $450 million of publicly traded exchangeable senior notes having a weighted average interest rate of 3.75%, an initial redemption date at the option of either the holder or us in 2013 and maturity in 2036 and (3) $2.7 billion of property-specific mortgage debt having a weighted average interest rate of 6.74% per annum and weighted average term of 3.3 years (which includes the $225.0 million drawn on our Unsecured Line of Credit secured by 599 Lexington Avenue). As of December 31, 2006, we had approximately $225.0 million drawn on our Unsecured Line of Credit which was secured by our 599 Lexington Avenue property in New York and which balance is included under our variable rate mortgages in the table below. The table below summarizes our outstanding debt at December 31, 2006 and 2005:

 

     December 31,  
     2006     2005  
     (dollars in thousands)  

DEBT SUMMARY:

    

Balance

    

Fixed rate

   $ 3,889,447     $ 3,952,151  

Variable rate

     711,490       874,103  
                

Total

   $ 4,600,937     $ 4,826,254  
                

Percent of total debt:

    

Fixed rate

     84.54 %     81.89 %

Variable rate

     15.46 %     18.11 %
                

Total

     100.00 %     100.00 %
                

Weighted average interest rate at end of period:

    

Fixed rate

     6.27 %     6.70 %

Variable rate

     5.80 %     4.96 %
                

Total

     6.20 %     6.39 %
                

The variable rate debt shown above bears interest based on various spreads over the London Interbank Offered Rate or Eurodollar rates. As of December 31, 2006, the weighted average interest rate on our variable rate debt was LIBOR/Eurodollar plus .45% per annum. On February 12, 2007, we repaid $700 million of the variable rate indebtedness above consisting of (1) the $225.0 million draw on our Unsecured Line of Credit, which draw was collateralized by 599 Lexington Avenue, and (2) the mortgage loan collateralized by Times Square Tower totaling $475.0 million. The variable rate indebtedness was repaid with proceeds from a new mortgage financing secured by 599 Lexington Avenue totaling $750.0 million, which bears interest at a fixed interest rate of 5.57% per annum and matures on March 1, 2017 (See Note 23 to the Consolidated Financial Statements). On December 19, 2006, we had terminated our forward-starting interest rate swap contracts and received approximately $10.9 million, which amount will reduce our interest expense over the ten-year term of the financing, resulting in an effective interest rate of 5.38% per annum.

Unsecured Line of Credit

On August 3, 2006, we modified our $605.0 million unsecured revolving credit facility (the “Unsecured Line of Credit”) by extending the maturity date from October 30, 2007 to August 3, 2010, with a provision for a one-year extension at our option, subject to certain conditions, and by reducing the per annum variable interest rate on outstanding balances from Eurodollar plus 0.65% to Eurodollar plus 0.55% per annum. Under the Unsecured Line of Credit, a facility fee equal to 15 basis points per annum is payable in quarterly installments. The interest rate and facility fee are subject to adjustment in the event of a change in our senior unsecured debt ratings. The Unsecured Line of Credit involves a syndicate of lenders. The Unsecured Line of Credit contains a

 

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competitive bid option that allows banks that are part of the lender consortium to bid to make loan advances to the Company at a negotiated LIBOR-based rate. The Unsecured Line of Credit is available to fund working capital and general corporate purposes, including, without limitation, to fund development of properties, land and property acquisitions and to repay or reduce indebtedness. The Unsecured Line of Credit is a recourse obligation of BPLP.

Our ability to borrow under our Unsecured Line of Credit is subject to our compliance with a number of customary financial and other covenants on an ongoing basis, including:

 

   

a leverage ratio not to exceed 60%, however the leverage ratio may increase to no greater than 65% provided that it is reduced back to 60% within 180 days;

 

   

a secured debt leverage ratio not to exceed 55%;

 

   

a fixed charge coverage ratio of at least 1.40;

 

   

an unsecured leverage ratio not to exceed 60%, however the leverage ratio may increase to no greater than 65% provided that it is reduced back to 60% within 180 days;

 

   

a minimum net worth requirement;

 

   

an unsecured debt interest coverage ratio of at least 1.75; and

 

   

limitations on permitted investments.

We believe we are in compliance with the financial and other covenants listed above.

We had an outstanding balance on our Unsecured Line of Credit of $225.0 million at December 31, 2006, which was collateralized by our 599 Lexington Avenue property and therefore is included in Mortgage Notes Payable in our Consolidated Balance Sheets. We also had $18.1 million in outstanding letters of credit under our Unsecured Line of Credit. As of December 31, 2006, we had the ability to borrow an additional $361.9 million under our Unsecured Line of Credit. On February 12, 2007, we repaid the $225.0 million which was collateralized by our 599 Lexington Avenue property. As of February 23, 2007, we have no borrowings outstanding under our Unsecured Line of Credit.

Unsecured Senior Notes

The following summarizes the unsecured senior notes outstanding as of December 31, 2006 (dollars in thousands):

 

     Coupon/
Stated Rate
    Effective
Rate (1)
    Principal
Amount
   

Maturity Date (2)

10 Year Unsecured Senior Notes

   6.250 %   6.296 %   $ 750,000     January 15, 2013

10 Year Unsecured Senior Notes

   6.250 %   6.280 %     175,000     January 15, 2013

12 Year Unsecured Senior Notes

   5.625 %   5.636 %     300,000     April 15, 2015

12 Year Unsecured Senior Notes

   5.000 %   5.075 %     250,000     June 1, 2015
              

Total principal

         1,475,000    

Net discount

         (3,525 )  
              

Total

       $ 1,471,475    
              

(1) Yield on issuance date including the effects of discounts on the notes.
(2) No principal amounts are due prior to maturity.

Our unsecured senior notes are redeemable at our option, in whole or in part, at a redemption price equal to the greater of (1) 100% of their principal amount or (2) the sum of the present value of the remaining scheduled payments of principal and interest discounted at a rate equal to the yield on U.S. Treasury securities with a

 

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comparable maturity plus 35 basis points (or 25 basis point in the case of the $250 million 12 Year Unsecured Senior Notes that mature on June 1, 2015), in each case plus accrued and unpaid interest to the redemption date. The indenture under which our senior unsecured notes were issued contains restrictions on incurring debt and using our assets as security in other financing transactions and other customary financial and other covenants, including (1) a leverage ratio not to exceed 60%, (2) a secured debt leverage ratio not to exceed 50%, (3) an interest coverage ratio of 1.5, and (4) unencumbered asset value to be no less than 150% of our unsecured debt. As of December 31, 2006 we were in compliance with each of these financial restrictions and requirements.

Investment grade ratings on our senior unsecured notes are as follows:

 

Rating Organization

  

Rating

Moody’s

   Baa2 (stable)

Standard & Poor’s

   BBB (stable)

FitchRatings

   BBB (stable)

The security rating is not a recommendation to buy, sell or hold securities, as it may be subject to revision or withdrawal at any time by the rating organization. Each rating should be evaluated independently of any other rating.

Unsecured exchangeable senior notes

On April 6, 2006, we completed a public offering of $400 million in aggregate principal amount of our 3.75% exchangeable senior notes due 2036. On May 2, 2006, we issued an additional $50 million aggregate principal amount of the notes as a result of the exercise by the underwriter of its over-allotment option. The notes will be exchangeable into Boston Properties, Inc.’s common stock under certain circumstances. When issued, the initial exchange rate, subject to adjustment, was 8.9461 shares per $1,000 principal amount of notes (or an exchange price of approximately $111.78 per share of common stock). Noteholders may require us to purchase the notes at par initially on May 18, 2013 and, after that date, the notes will be redeemable at par at our option. In connection with the special distribution declared on December 15, 2006, the exchange rate was adjusted effective December 29, 2006 to 9.3900 shares per $1,000 principal amount of notes (or an exchange price of approximately $106.50 per share of common stock). See Note 8 to the Consolidated Financial Statements for a description of the terms of the notes.

On February 6, 2007, we completed an offering of $862.5 million in aggregate principal amount (including $112.5 million as a result of the exercise by the initial purchasers of their over-allotment option) of our 2.875% exchangeable senior notes due 2037. The notes were priced at 97.433333% of their face amount, resulting in an effective interest rate of approximately 3.438% per annum and net proceeds to us of approximately $840.0 million. The notes were offered and sold to the initial purchasers in reliance on the exemption from registration provided by Section 4(2) of the Securities Act of 1933. The initial purchasers then sold the notes to qualified institutional buyers pursuant to the exemption provided by Rule 144A under the Securities Act. The notes will be exchangeable into Boston Properties, Inc.’s common stock under certain circumstances at an initial exchange rate, subject to adjustment, of 6.6090 shares per $1,000 principal amount of notes (or an initial exchange price of approximately $151.31 per share of common stock). Noteholders may require us to purchase the notes at par initially on February 15, 2012 and, commencing on February 20, 2012 and any time thereafter, the notes will be redeemable at par at our option. See Note 23 to the Consolidated Financial Statements for a description of the terms of the notes.

 

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Mortgage Debt

The following represents the outstanding principal balances due under the mortgages notes payable at December 31, 2006:

 

Properties

   Interest Rate     Principal Amount     Maturity Date
           (in thousands)      

Citigroup Center

   7.19 %   $ 493,526 (1)   May 11, 2011

Times Square Tower

   5.85 %     475,000 (2)   July 9, 2008

Embarcadero Center One and Two

   6.70 %     284,789     December 10, 2008

Prudential Center

   6.72 %     265,325     July 1, 2008

599 Lexington Avenue

   5.65 %     225,000 (3)   August 3, 2010

Embarcadero Center Four

   6.79 %     134,058     February 1, 2008

Democracy Center

   7.05 %     96,150     April 1, 2009

One Freedom Square

   5.33 %     78,007 (4)   June 30, 2012

New Dominion Tech Park, Bldg. Two

   5.55 %     63,000 (5)   October 1, 2014

202, 206 & 214 Carnegie Center

   8.13 %     59,061     October 1, 2010

140 Kendrick Street

   5.21 %     58,501 (6)   July 1, 2013

New Dominion Tech. Park, Bldg. One

   7.69 %     55,420     January 15, 2021

1330 Connecticut Avenue

   4.65 %     55,097 (7)   February 26, 2011

Reservoir Place

   5.82 %     51,916 (8)   July 1, 2009

504, 506 & 508 Carnegie Center

   7.39 %     42,229     January 1, 2008

10 and 20 Burlington Mall Road

   7.25 %     36,375 (9)   October 1, 2011

Ten Cambridge Center

   8.27 %     32,213     May 1, 2010

Sumner Square

   7.35 %     27,581     September 1, 2013

Eight Cambridge Center

   7.73 %     25,188     July 15, 2010

1301 New York Avenue

   7.14 %     25,061 (10)   August 15, 2009

510 Carnegie Center

   7.39 %     24,255     January 1, 2008

Reston Corporate Center

   6.56 %     21,268     May 1, 2008

University Place

   6.94 %     21,203     August 1, 2021

Bedford Business Park

   8.50 %     17,749     December 10, 2008

South of Market

   6.63 %     11,490 (11)   November 21, 2009
            

Total

     $ 2,679,462    
            

(1) In accordance with EITF 98-1, the principal amount and interest rates shown were adjusted upon redemption of the outside members’ equity interest in the limited liability company that owns the property to reflect the fair value of the note. The stated principal balance at December 31, 2006 was $490.9 million and the stated interest rate was 7.19% per annum. The interest rate used to adjust the portion of debt associated with the redemption to fair value was 6.25% per annum.
(2) The mortgage financing bears interest at a variable rate equal to LIBOR plus 0.50% per annum. This loan was repaid on February 12, 2007.
(3) On July 19, 2005, we repaid the mortgage loan through a secured draw on our unsecured line of credit. As of December 31, 2006, the interest rate on this draw under our unsecured line of credit was 5.65% using a weighted average LIBOR plus 0.30% per annum. On December 19, 2006, we entered into an interest rate lock agreement with a lender for a fixed interest rate of 5.57% per annum on a ten-year mortgage financing totaling $750.0 million to be collateralized by 599 Lexington Avenue. We closed on the mortgage financing on February 12, 2007.
(4) In accordance with EITF 98-1, the principal amount and interest rates shown were adjusted upon acquisition of the property to reflect the fair value of the note. The stated principal balance at December 31, 2006 was $72.1 million and the stated interest rate was 7.75%.
(5) The mortgage loan requires interest only payments with a balloon payment due at maturity.

 

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(6) In accordance with EITF 98-1, the principal amount and interest rates shown were adjusted upon acquisition of the property to reflect the fair value of the note. The stated principal balance at December 31, 2006 was $53.6 million and the stated interest rate was 7.51%.
(7) In accordance with EITF 98-1, the principal amount and interest rates shown were adjusted upon acquisition of the property to reflect the fair value of the note. The stated principal balance at December 31, 2006 was $49.8 million and the stated interest rate was 7.58%.
(8) In accordance with EITF 98-1, the principal amount and interest rates shown were adjusted upon acquisition of the property to reflect the fair value of the note. The stated principal balance at December 31, 2006 was $50.6 million and the stated interest rate was 7.0%.
(9) Includes outstanding indebtedness secured by 91 Hartwell Avenue.
(10) Includes outstanding principal in the amounts of $18.4 million, $4.6 million and $2.1 million which bear interest at fixed rates of 6.70%, 8.54% and 6.75%, respectively.
(11) The construction financing bears interest at a variable rate equal to LIBOR plus 1.25% per annum.

Combined aggregate principal payments of mortgage notes payable at December 31, 2006 are as follows (in thousands):

 

Year

   Principal Payments

2007

   $ 41,492

2008

     1,268,672

2009

     191,982

2010

     351,844

2011

     540,384

Thereafter

     264,992

Market Risk

Market risk is the risk of loss from adverse changes in market prices and interest rates. Our future earnings, cash flows and fair values relevant to financial instruments are dependent upon prevalent market interest rates. Our primary market risk results from our indebtedness, which bears interest at fixed and variable rates. The fair value of our debt obligations are affected by changes in the market interest rates. We manage our market risk by matching long-term leases with long-term, fixed-rate, non-recourse debt of similar duration. We continue to follow a conservative strategy of generally pre-leasing development projects on a long-term basis to creditworthy tenants in order to achieve the most favorable construction and permanent financing terms. Approximately 85% of our outstanding debt has fixed interest rates, which minimizes the interest rate risk through the maturity of such outstanding debt. We also manage our market risk by entering into hedging arrangements with financial institutions. Our primary objectives when undertaking hedging transactions and derivative positions is to reduce our floating rate exposure and to fix a portion of the interest rate for anticipated financing and refinancing transactions. This in turn, reduces the risks that the variability of cash flows imposes on variable rate debt. Our strategy protects us against future increases in interest rates.

During 2005, we entered into forward-starting interest rate swap contracts to lock the 10-year treasury rate and 10-year swap spread in contemplation of obtaining long-term fixed-rate financing to refinance existing debt that is expiring or freely prepayable prior to February 2007. Based on swap spreads at each trade date, the swaps fix the 10-year treasury rate for a financing in February 2007 at a weighted average of 4.34% per annum on notional amounts aggregating $500.0 million. The swaps were to go into effect in February 2007 and expire in February 2017. We entered into the interest rate swap contracts designated and qualifying as a cash flow hedges to reduce our exposure to the variability in future cash flows attributable to changes in the Treasury rate in contemplation of obtaining ten-year fixed-rate financing in early 2007. On December 19, 2006, we entered into an interest rate lock agreement with a lender for a fixed interest rate of 5.57% per annum on a ten-year mortgage

 

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financing totaling $750.0 million to be collateralized by our 599 Lexington Avenue property in New York City. On February 12, 2007, we closed on the mortgage financing. In conjunction with the interest rate lock agreement, we terminated our forward-starting interest rate swap contracts and received approximately $10.9 million, which amount will reduce our interest expense over the ten-year term of the financing, resulting in an effective interest rate of 5.38% per annum. We recorded the changes in fair value of the swap contracts related to the effective portion of the interest rate contracts totaling approximately $10.9 million in Accumulated Other Comprehensive Income (Loss) within the our Consolidated Balance Sheets. We expect that within the next twelve months we will reclassify into earnings approximately $1.0 million of the amounts recorded within Accumulated Other Comprehensive Income (Loss) relating to the forward-starting interest rate swap contracts.

At December 31, 2005, derivatives with a fair value of $6.2 million were included in Prepaid Expenses and Other Assets and derivatives with a fair value of $0.2 million were included in Other Liabilities within our Consolidated Balance Sheets. We have recorded the changes in fair value of the swap contracts related to the effective portion of the interest rate contracts totaling approximately $6.0 million in Accumulated Other Comprehensive Income (Loss) within our Consolidated Balance Sheets. The amount of hedge ineffectiveness in 2005 was not material. As of December 31, 2006, no derivatives were designated as cash flow hedges, fair value hedges or hedges of net investments in foreign operations. We do not use derivatives for trading or speculative purposes. Derivatives not designated as hedges, which consist entirely of two immaterial interest rate caps, are not speculative and are used to manage our exposure to interest rate movements and other identified risks.

At December 31, 2006, our outstanding variable rate debt based off LIBOR totaled approximately $711 million. At December 31, 2006, the average interest rate on variable rate debt was approximately 5.80%. If market interest rates on our variable rate debt had been 100 basis points greater, total interest would have increased approximately $7.1 million for the year ended December 31, 2006.

At December 31, 2005, our outstanding variable rate debt based off LIBOR totaled approximately $874.1 million. At December 31, 2005, the average interest rate on variable rate debt was approximately 4.96%. If market interest rates on our variable rate debt had been 100 basis points greater, total interest would have increased approximately $8.7 million for the year ended December 31, 2005.

These amounts were determined solely by considering the impact of hypothetical interest rates on our financial instruments. Due to the uncertainty of specific actions we may undertake to minimize possible effects of market interest rate increases, this analysis assumes no changes in our financial structure.

Funds from Operations

Pursuant to the revised definition of Funds from Operations adopted by the Board of Governors of the National Association of Real Estate Investment Trusts (“NAREIT”), we calculate Funds from Operations, or “FFO,” by adjusting net income (loss) available to common unitholders (computed in accordance with GAAP, including non-recurring items) for gains (or losses) from sales of properties, real estate related depreciation and amortization, and after adjustment for unconsolidated partnerships, joint ventures and preferred distributions. FFO is a non-GAAP financial measure. The use of FFO, combined with the required primary GAAP presentations, has been fundamentally beneficial in improving the understanding of operating results of REITs among the investing public and making comparisons of REIT operating results more meaningful. Management generally considers FFO to be a useful measure for reviewing our comparative operating and financial performance because, by excluding gains and losses related to sales of previously depreciated operating real estate assets and excluding real estate asset depreciation and amortization (which can vary among owners of identical assets in similar condition based on historical cost accounting and useful life estimates), FFO can help one compare the operating performance of a company’s real estate between periods or as compared to different companies. Our computation of FFO may not be comparable to FFO reported by other REITs or real estate companies that do not define the term in accordance with the current NAREIT definition or that interpret the current NAREIT definition differently.

 

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In addition to presenting FFO in accordance with the NAREIT definition, we also disclose FFO, as adjusted, for the year ended December 31, 2006, 2005, 2003 and 2002 which excludes the effects of the losses from early extinguishments of debt associated with the sales of real estate. The adjustment to exclude losses from early extinguishments of debt results when the sale of real estate encumbered by debt requires us to pay the extinguishment costs prior to the debt’s stated maturity and to write-off unamortized loan costs at the date of the extinguishment. Such costs are excluded from the gains on sales of real estate reported in accordance with GAAP. However, we view the losses from early extinguishments of debt associated with the sales of real estate as an incremental cost of the sale transactions because we extinguished the debt in connection with the consummation of the sale transactions and we had no intent to extinguish the debt absent such transactions. We believe that this supplemental adjustment more appropriately reflects the results of our operations exclusive of the impact of our sale transactions.

The adjustments for net derivative losses related to non-qualifying derivative contracts for the years ended December 31, 2003 and 2002 resulted from interest rate contracts we entered into prior to the effective date of SFAS No. 133 to limit our exposure to fluctuations in interest rates with respect to variable rate debt associated with real estate projects under development. Upon transition to SFAS No. 133 on January 1, 2001, the impacts of these contracts were recorded in current earnings, while prior to that time they were capitalized. Although these adjustments were attributable to a single hedging program, the underlying contracts extended over multiple reporting periods and therefore resulted in adjustments from the first quarter of 2001 through the third quarter of 2003. Management presents FFO before the impact of non-qualifying derivative contracts because economically this interest rate hedging program was consistent with our risk management objective of limiting our exposure to interest rate volatility and the change in accounting under GAAP did not correspond to a substantive difference. Management does not currently anticipate structuring future hedging programs in a manner that would give rise to this kind of adjustment.

The adjustments for early lease surrender for the year ended December 31, 2002 resulted from a unique lease transaction related to the surrender of space by a tenant that was accounted for as a termination for GAAP purposes and recorded in income at the time the space was surrendered. However, we continued to collect payments monthly after the surrender of space through the month of July 2002, the date on which the terminated lease would otherwise have expired under its original terms. Management presents FFO after the early surrender lease adjustment because economically this transaction impacted periods subsequent to the time the space was surrendered by the tenant and, therefore, recording the entire amount of the lease termination payment in a single period made FFO less useful as an indicator of operating performance. Although these adjustments are attributable to a single lease, the transaction impacted multiple reporting periods and resulted in an adjustment for the year ended December 31, 2002.

Although our FFO, as adjusted, clearly differs from NAREIT’s definition of FFO, and may not be comparable to that of other REITs and real estate companies, we believe it provides a meaningful supplemental measure of our operating performance because we believe that, by excluding the effects of the losses from early extinguishments of debt associated with the sales of real estate, adjustments for non-qualifying derivative contracts and early lease surrender payments, management and investors are presented with an indicator of our operating performance that more closely achieves the objectives of the real estate industry in presenting FFO.

Neither FFO, nor FFO as adjusted, should be considered as an alternative to net income (determined in accordance with GAAP) as an indication of our performance. Neither FFO nor FFO, as adjusted, represent cash generated from operating activities determined in accordance with GAAP and is not a measure of liquidity or an indicator of our ability to make cash distributions. We believe that to further understand our performance, FFO and FFO, as adjusted should be compared with our reported net income and considered in addition to cash flows in accordance with GAAP, as presented in our Consolidated Financial Statements.

 

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The following table presents a reconciliation of net income available to common unitholders to FFO and FFO, as adjusted, for the years ended December 31, 2006, 2005, 2004, 2003 and 2002:

 

    Year ended December 31,
    2006     2005     2004   2003   2002
    (in thousands)

Net income available to common unitholders

  $ 1,048,685     $ 534,788     $ 344,800   $ 442,136   $ 520,696

Add:

         

Preferred distributions and allocation of undistributed earnings

    22,814       26,780       17,133     31,165     50,262

Cumulative effect of a change in accounting principle

    —         5,043       —       —       —  

Less:

         

Gains on sales of real estate from discontinued operations

    —         57,969       33,427     91,942     30,916

Income from discontinued operations

    —         2,279       4,030     13,314     31,951

Gains on sales of real estate and other assets

    727,131       188,546       9,822     70,627     233,304

Income from unconsolidated joint ventures

    24,507       4,829       3,380     6,016     7,954

Minority interests in property partnerships

    2,013       6,017       4,685     1,827     2,408
                                 

Income before minority interests in property partnerships, income from unconsolidated joint ventures, gains on sales of real estate and other assets, discontinued operations, cumulative effect of a change in accounting principle and preferred distributions and allocation of undistributed earnings

    317,848       306,971       306,589     289,575     264,425

Add:

         

Real estate depreciation and amortization (1)

    279,199       271,829       255,594     215,135     191,774

Income from discontinued operations

    —         2,279       4,238     13,644     32,294

Income from unconsolidated joint ventures

    6,590 (2)     4,829       3,380     6,016     7,954

Less:

         

Minority interests in property partnerships’ share of funds from operations

    479       113       922     3,458     3,223

Preferred distributions

    9,418 (3)     12,918 (3)     15,050     21,249     28,711
                                 

Funds from operations

    593,740       572,877       553,829     499,663     464,513

Add(subtract):

         

Losses from early extinguishments of debt associated with the sales of real estate

    31,444       11,041       —       1,474     2,386

Net derivative losses (SFAS No. 133)

    —         —         —       1,038     11,874

Early surrender lease adjustment

    —         —         —       —       8,520
                                 

Funds from operations available to common unitholders after supplemental adjustments to exclude losses from early extinguishments of debt associated with the sales of real estate, net derivative losses (SFAS No. 133) and early surrender lease adjustment

  $ 625,184     $ 583,918     $ 553,829   $ 502,175   $ 487,293
                                 

Weighted average units outstanding—basic

    135,923       132,881       128,313     118,087     113,617
                                 

(1)

Real estate depreciation and amortization consists of depreciation and amortization from the Consolidated Statements of Operations of $272,608, $264,182, $247,924, $205,586 and $175,612, our share of unconsolidated joint venture real estate depreciation and amortization of $9,087, $8,554, $6,814, $8,475 and

 

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$8,955, and depreciation and amortization from discontinued operations of $0, $812, $3,292, $3,791 and $10,016, less corporate related depreciation and amortization of $1,584, $1,719, $2,436, $2,717 and $2,809 and adjustment of asset retirement obligations of $912, $0, $0, $0 and $0 for the years ended December 31, 2006, 2005, 2004, 2003 and 2002, respectively.

(2) Excludes approximately $17.9 million related to our share of the gain on sale and related loss from early extinguishment of debt associated with the sale of 265 Franklin Street.
(3) Excludes approximately $12.2 million and approximately $12.1 million for the year ended December 31, 2006 and 2005, respectively, of income allocated to the holders of Series Two Preferred Units to account for their right to participate on an as-converted basis in the special distributions that followed previously completed sales of real estate.

Reconciliation to Diluted Funds from Operations:

 

    For the years ended December 31,
    2006   2005   2004   2003   2002
    Income
(Numerator)
    Shares/Units
(Denominator)
  Income
(Numerator)
    Shares/Units
(Denominator)
  Income
(Numerator)
  Shares/Units
(Denominator)
  Income
(Numerator)
  Shares/Units
(Denominator)
  Income
(Numerator)
  Shares/Units
(Denominator)

Basic funds from operations after supplemental adjustments to exclude losses from early extinguishments of debt associated with the sales of real estate, net derivative losses (SFAS No. 133) and early surrender lease adjustment

  $ 625,184     135,923   $ 583,918     132,881   $ 553,829   128,313   $ 502,175   118,087   $ 487,293   113,617

Effect of Dilutive Securities:

                   

Convertible Preferred Units

    9,418 (2)   3,629     12,918 (2)   5,163     15,050   6,054     21,249   8,375     25,114   9,821

Convertible Preferred Stock

    —       —       —       —       —     —       —     —       3,412   1,366

Stock Options and
other (1)

    —       2,356     —       2,285     —     2,303     —     1,586     185   1,468
                                                     

Diluted funds from operations after supplemental adjustments to exclude losses from early extinguishments of debt associated with the sales of real estate, net derivative losses (SFAS No. 133) and early surrender lease adjustment

  $ 634,602     141,908   $ 596,836     140,329   $ 568,879   136,670   $ 523,424   128,048   $ 516,004   126,272
                                                     

(1) Stock options are related to Boston Properties, Inc.
(2) Excludes approximately $12.2 million and approximately $12.1 million for the years ended December 31, 2006 and 2005, respectively, of income allocated to the holders of Series Two Preferred Units to account for their right to participate on an as-converted basis in the special distributions that followed previously completed sales of real estate.

Net Operating Income

Net operating income, or “NOI,” is a non-GAAP financial measure equal to net income available to common unitholders, the most directly comparable GAAP financial measure, plus net derivative losses, losses from early extinguishments of debt, losses on investments in securities, cumulative effect of a change in accounting principle, preferred distributions and allocation of undistributed earnings, depreciation and amortization, interest expense and general and administrative expense, less gains on sales of real estate from discontinued operations, income from discontinued operations, gains on sales of real estate and other assets, income from unconsolidated joint ventures, minority interests in property partnerships, interest and other income

 

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and development and management services revenue. We use NOI internally as a performance measure and believe NOI provides useful information to investors regarding our financial condition and results of operations because it reflects only those income and expense items that are incurred at the property level. Therefore, we believe NOI is a useful measure for evaluating the operating performance of our real estate assets.

Our management also uses NOI to evaluate regional property level performance and to make decisions about resource allocations. Further, we believe NOI is useful to investors as a performance measure because, when compared across periods, NOI reflects the impact on operations from trends in occupancy rates, rental rates, operating costs and acquisition and development activity on an unleveraged basis, providing perspective not immediately apparent from net income. NOI excludes certain components from net income in order to provide results that are more closely related to a property’s results of operations. For example, interest expense is not necessarily linked to the operating performance of a real estate asset and is often incurred at the corporate level as opposed to the property level. In addition, depreciation and amortization, because of historical cost accounting and useful life estimates, may distort operating performance at the property level. NOI presented by us may not be comparable to NOI reported by other REITs and real estate companies that define NOI differently. We believe that in order to facilitate a clear understanding of our operating results, NOI should be examined in conjunction with net income as presented in our Consolidated Financial Statements. NOI should not be considered as an alternative to net income as an indication of our performance or to cash flows as a measure of liquidity or ability to make distributions.

The following sets forth a reconciliation of NOI to net income available to common unitholders for the fiscal years 2002 through 2006.

 

     Years ended December 31,
     2006    2005    2004    2003    2002

Net operating income

   $ 923,672    $ 918,286    $ 889,798    $ 822,122    $ 752,743

Add:

              

Development and management services

     19,825      17,310      20,440      17,332      10,731

Interest and other

     36,737      12,015      10,339      3,014      5,479

Minority interests in property partnerships

     2,013      6,017      4,685      1,827      2,408

Income from unconsolidated joint ventures

     24,507      4,829      3,380      6,016      7,954

Gains on sales of real estate and other assets

     727,131      188,546      9,822      70,627      233,304

Income from discontinued operations

     —        2,279      4,030      13,314      31,951

Gains on sales of real estate from discontinued operations

     —        57,969      33,427      91,942      30,916

Less:

              

General and administrative

     59,375      55,471      53,636      45,359      47,292

Interest expense

     298,260      308,091      306,170      299,436      263,067

Depreciation and amortization

     272,608      264,182      247,924      205,586      175,612

Net derivative losses

     —        —        —        1,038      11,874

Losses from early extinguishments of debt

     32,143      12,896      6,258      1,474      2,386

Losses on investments in securities

     —        —        —        —        4,297

Cumulative effect of a change in accounting principle

     —        5,043      —        —        —  

Preferred distributions and allocation of undistributed earnings

     22,814      26,780      17,133      31,165      50,262
                                  

Net income available to common unitholders

   $ 1,048,685    $ 534,788    $ 344,800    $ 442,136    $ 520,696
                                  

 

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Contractual Obligations

As of December 31, 2006, we were subject to contractual payment obligations as described in the table below.

 

    Payments Due by Period
    Total   2007   2008   2009   2010   2011   Thereafter
    (Dollars in thousands)

Contractual Obligations:

             

Long-term debt

             

Mortgage debt (1)

  $ 3,278,301   $ 219,307   $ 1,417,139   $ 350,485   $ 425,879   $ 546,349   $ 319,142

Unsecured senior notes (1)

    2,100,472     87,188     87,188     87,188     87,188     87,188     1,664,532

Unsecured senior exchangeable notes (1)

    557,630     16,875     16,875     16,875     16,875     16,875     473,255

Unsecured line of credit

    —       —       —       —       —       —       —  

Ground leases

    46,448     2,349     2,252     2,275     2,300     2,324     34,948

Tenant obligations (2)

    93,266     82,965     5,475     4,458     368     —       —  

Construction contracts on development projects

    298,431     194,076     78,067     23,324     2,964     —       —  
                                         

Total Contractual Obligations

  $ 6,374,548   $ 602,760   $ 1,606,996   $ 484,605   $ 535,574   $ 652,736   $ 2,491,877
                                         

(1) Amounts include principal and interest payments.
(2) Committed tenant-related obligations based on executed leases as of December 31, 2006 (tenant improvements and lease commissions).

We have various standing or renewable service contracts with vendors related to our property management. In addition, we have certain other utility contracts we enter into in the ordinary course of business that may extend beyond one year and that vary based on usage. These contracts include terms that provide for cancellation with insignificant or no cancellation penalties. Contract terms are generally one year or less.

Off-Balance Sheet Arrangements

Joint Ventures

We have investments in eight unconsolidated joint ventures (including our investment in the Value-Added Fund) with our effective ownership interests ranging from 23.89% to 51%, all of which have mortgage indebtedness. We exercise significant influence over, but do not control, these entities and therefore they are presently accounted for using the equity method of accounting. See also Note 5 to the Consolidated Financial Statements. At December 31, 2006, the debt related to these ventures was equal to approximately $630.3 million. The table below summarizes the outstanding debt of these joint venture properties at December 31, 2006:

 

Properties

   Company %
Ownership
    Interest
Rate
   

Principal
Amount

(in thousands)

   

Maturity

Date

901 New York Avenue

   25.00 %   5.19 %   $ 170,000     January 1,2015

Metropolitan Square

   51.00 %   8.23 %     130,643     May 1, 2010

Market Square North

   50.00 %   7.70 %     90,112     December 19, 2010

Worldgate Plaza

   25.00 %   6.24 %     57,000 (1)   December 1, 2007

Wisconsin Place

   23.89 %   6.88 %     50,770 (2)   March 11, 2009

Circle Star

   25.00 %   6.57 %     42,000 (3)   September 1, 2013

505 9th Avenue

   50.00 %   6.05 %     43,505 (4)   See note 4

New York Land Venture

   50.00 %   7.60 %     23,600 (5)   May 8, 2008

Wisconsin Place

   23.89 %   4.38 %     15,124 (6)   January 1, 2008

300 Billerica Road

   25.00 %   5.69 %     7,500 (3)   January 1, 2016
              

Total

       $ 630,254    
              

 

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(1) This property is owned by the Value-Added Fund. The mortgage financing bears interest at a variable rate equal to LIBOR plus 0.89% per annum and requires interest only payments with a balloon payment due at maturity. This mortgage matures in December 2007, with two one-year extension options. In addition, the Value-Added Fund entered into an agreement to cap the interest rate at 9.5% for a nominal fee.
(2) Amount represents outstanding construction financing under a $96.5 million loan commitment (of which our share is $23.1 million) at a variable rate equal to LIBOR plus 1.50% per annum with a maturity in March 2009. The mortgage debt requires interest only payments with a balloon payment due at maturity.
(3) This property is owned by the Value-Added Fund. The mortgage financing bears interest at a fixed rate and requires interest only payments with a balloon payment due at maturity.
(4) Amount represents outstanding construction financing under a $60.0 million loan commitment (of which our share is $30.0 million) which bears interest at a fixed rate of 5.73% per annum and a $35.0 million loan commitment (of which our share is $17.5 million) which bears interest at a variable rate of LIBOR plus 1.25% per annum. The financing converts to a ten-year fixed rate loan in October 2007 at an interest rate of 5.73% per annum with a provision for an increase in the borrowing capacity by $35.0 million (of which our share would be $17.5 million). The conversion is subject to conditions which we expect to satisfy. As of December 31, 2006, the interest rate on the variable rate portion of the debt was 6.60% per annum. The weighted-average rate as of December 31, 2006 is reflected in the table.
(5) We have agreed to guarantee approximately $11.8 million of this loan. The financing bears interest at a variable rate equal to LIBOR plus 2.25% per annum.
(6) In accordance with EITF 98-1, the principal amount and interest rates shown were adjusted to reflect the fair value of the note using an effective interest rate of 4.38% per annum. This note is non-interest bearing with a stated principal balance of $15.5 million (of which our share is approximately $2.9 million) and matures in January 2008. The weighted average rates exclude the impact of this loan. We have agreed, together with our third-party joint venture partners, to guarantee this seller financing on behalf of the land and infrastructure entity.

Environmental Matters

It is our policy to retain independent environmental consultants to conduct or update Phase I environmental assessments (which generally do not involve invasive techniques such as soil or ground water sampling) and asbestos surveys in connection with our acquisition of properties. These pre-purchase environmental assessments have not revealed environmental conditions that we believe will have a material adverse effect on our business, assets, financial condition, results of operations or liquidity, and we are not otherwise aware of environmental conditions with respect to our properties that we believe would have such a material adverse effect. However, from time to time environmental conditions at our properties have required and may in the future require environmental testing and/or regulatory filings, as well as remedial action.

In February 1999, we (through a joint venture) acquired from Exxon Corporation a property in Massachusetts that was formerly used as a petroleum bulk storage and distribution facility and was known by the state regulatory authority to contain soil and groundwater contamination. We developed an office park on the property. We engaged a specially licensed environmental consultant to oversee the management of contaminated soil and groundwater that was disturbed in the course of construction. Under the property acquisition agreement, Exxon agreed to (1) bear the liability arising from releases or discharges of oil and hazardous substances which occurred at the site prior to our ownership, (2) continue monitoring and/or remediating such releases and discharges as necessary and appropriate to comply with applicable requirements, and (3) indemnify us for certain losses arising from preexisting site conditions. Any indemnity claim may be subject to various defenses, and there can be no assurance that the amounts paid under the indemnity, if any, would be sufficient to cover the liabilities arising from any such releases and discharges.

Environmental investigations at two of our properties in Massachusetts have identified groundwater contamination migrating from off-site source properties. In both cases we engaged a specially licensed

 

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environmental consultant to perform the necessary investigations and assessments and to prepare submittals to the state regulatory authority, including Downgradient Property Status Opinions. The environmental consultant concluded that the properties qualify for Downgradient Property Status under the state regulatory program, which eliminates certain deadlines for conducting response actions at a site. We also believe that these properties qualify for liability relief under certain statutory amendments regarding upgradient releases. Although we believe that the current or former owners of the upgradient source properties may bear responsibility for some or all of the costs of addressing the identified groundwater contamination, we will take necessary further response actions (if any are required). Other than periodic testing, no such additional response actions are anticipated at this time.

We own a property in Massachusetts where historic groundwater contamination was identified prior to acquisition. We engaged a specially licensed environmental consultant to perform investigations and to prepare necessary submittals to the state regulatory authority. The environmental consultant has concluded that (1) certain identified groundwater contaminants are migrating to the subject property from an off-site source property and (2) certain other detected contaminants are likely related to a historic release on the subject property. We have filed a Downgradient Property Status Opinion (described above) with respect to contamination migrating from off-site and a Response Action Outcome (“RAO”) with respect to the identified historic release. The RAO indicates that regulatory closure has been achieved and that no further action is required at this time.

Some of our properties and certain properties owned by our affiliates are located in urban, industrial and other previously developed areas where fill or current or historical uses of the areas have caused site contamination. Accordingly, it is sometimes necessary to institute special soil and/or groundwater handling procedures and/or include particular building design features in connection with development, construction and other property operations in order to achieve regulatory closure and/or ensure that contaminated materials are addressed in an appropriate manner. In these situations it is our practice to investigate the nature and extent of detected contamination and estimate the costs of required response actions and special handling procedures. We then use this information as part of our decision-making process with respect to the acquisition and/or development of the property. We own a parcel in Massachusetts, formerly used as a quarry/asphalt batching facility, which we may develop in the future. Pre-purchase testing indicated that the site contains relatively low levels of certain contaminants. We have engaged a specially licensed environmental consultant to monitor environmental conditions at the site and prepare necessary regulatory submittals based on the results of an environmental risk characterization. We anticipate that additional response actions necessary to achieve regulatory closure (if any) will be performed prior to or in connection with future development activities. When appropriate, closure documentation will be submitted for public review and comment pursuant to the state regulatory authority’s public information process.

We expect that resolution of the environmental matters relating to the above will not have a material impact on our business, assets, financial condition, results of operations or liquidity. However, we cannot assure you that we have identified all environmental liabilities at our properties, that all necessary remediation actions have been or will be undertaken at our properties or that we will be indemnified, in full or at all, in the event that such environmental liabilities arise.

Newly Issued Accounting Standards

In February 2006, the FASB issued SFAS No. 155, “Accounting for Certain Hybrid Financial Instruments—an Amendment of FASB Statements No. 133 and 140” (“SFAS No. 155”). The purpose of SFAS No. 155 is to simplify the accounting for certain hybrid financial instruments by permitting fair value re-measurement for any hybrid financial instrument that contains an embedded derivative that otherwise would require bifurcation. SFAS No. 155 is effective for all financial instruments acquired or issued after the beginning of an entity’s first fiscal year that begins after September 15, 2006. We do not expect the adoption of SFAS No. 155 to have a material impact on our cash flows, results of operations, financial position, or liquidity.

 

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In March 2006, the FASB issued SFAS No. 156, “Accounting for Servicing of Financial Assets—an Amendment of FASB Statement No. 140” (“SFAS No. 156”). SFAS No. 156 requires recognition of a servicing asset or a servicing liability each time an entity undertakes an obligation to service a financial asset by entering into a servicing contract. SFAS No. 156 also requires that all separately recognized servicing assets and servicing liabilities be initially measured at fair value and subsequently measured at fair value at each reporting date. SFAS No. 156 is effective as of the beginning of an entity’s first fiscal year that begins after September 15, 2006. We do not expect the adoption of SFAS No. 156 to have a material impact on our cash flows, results of operations, financial position, or liquidity.

In June 2006, the FASB issued Interpretation No. 48, “Accounting for Uncertainty in Income Taxes, an Interpretation of FASB Statement No. 109” (“FIN No. 48”). FIN No. 48 clarifies the accounting for uncertainty in income taxes recognized in a company’s financial statements and prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. FIN No. 48 also provides guidance on description, classification, interest and penalties, accounting in interim periods, disclosure and transition. FIN No. 48 is effective for fiscal years beginning after December 15, 2006. We do not expect the adoption of FIN No. 48 to have a material impact on our cash flows, results of operations, financial position, or liquidity.

In September 2006, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 108 (“SAB No. 108”), “Considering the Effects of Prior Year Misstatements When Quantifying Misstatements in Current Year Financial Statements.” SAB 108 provides guidance on the consideration of the effects of prior period misstatements in quantifying current year misstatements for the purpose of a materiality assessment. SAB 108 requires the quantification of financial statement misstatements based on the effects of the misstatements on each of the company’s financial statements and the related financial statement disclosures. This model is commonly referred to as the “dual approach” because it requires quantification of errors under both the iron curtain and the roll-over methods. The roll-over method focuses primarily on the impact of a misstatement on the income statement—including the reversing effect of prior year misstatements—but its use can lead to the accumulation of misstatements in the balance sheet. The iron-curtain method focuses primarily on the effect of correcting the period-end balance sheet with less emphasis on the reversing effects of prior year errors on the income statement. SAB 108 was effective for financial statements for fiscal years ending after November 15, 2006. The adoption of SAB 108 did not have a material impact on our cash flows, results of operations, financial position or liquidity.

Inflation

Substantially all of our leases provide for separate real estate tax and operating expense escalations over a base amount. In addition, many of our leases provide for fixed base rent increases or indexed increases. We believe that inflationary increases in costs may be at least partially offset by the contractual rent increases and operating expense escalations.

 

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Item 7A. Quantitative and Qualitative Disclosures about Market Risk

Approximately $3.9 billion of our borrowings, as of December 31, 2006, bear interest at fixed rates, and therefore the fair value of these instruments is affected by changes in the market interest rates. The following table presents our aggregate fixed rate debt obligations as of December 31, 2006 with corresponding weighted-average interest rates sorted by maturity date and our aggregate variable rate debt obligations sorted by maturity date. The weighted average interest rate on the variable rate debt as of December 31, 2006 was 5.80% per annum.

 

     2007     2008     2009     2010     2011     2012+     Total     Fair
Value
     (dollars in thousands)

Secured debt

  

Fixed Rate

   $ 45,489     $ 797,794     $ 184,450     $ 130,625     $ 542,781     $ 266,833     $ 1,967,972     $ 2,058,000

Average Interest Rate

     7.15 %     6.83 %     7.10 %     7.96 %     7.23 %     7.09 %     7.08 %  

Variable Rate

     —       $ 475,000     $ 11,490     $ 225,000       —         —       $ 711,490     $ 711,490
Unsecured debt   

Fixed Rate

     —         —         —         —         —       $ 1,471,475     $ 1,471,475     $ 1,496,497

Average Interest Rate

     —         —         —         —         —         5.95 %     5.95 %  

Variable Rate

     —         —         —         —         —         —         —         —  
Unsecured exchangeable debt   

Fixed Rate

     —         —         —         —         —       $ 450,000     $ 450,000     $ 517,685

Average Interest Rate

     —         —         —         —         —         3.75 %     3.75 %  

Variable Rate

     —         —         —         —         —         —         —         —  
                                                              

Total Debt

   $ 45,489     $ 1,272,794     $ 195,940     $ 355,625     $ 542,781     $ 2,188,308     $ 4,600,937     $ 4,783,672
                                                              

During 2005, we entered into twelve forward-starting interest rate swap contracts to lock in the 10-year treasury rate and 10-year swap spread in contemplation of obtaining long-term fixed-rate financing to refinance existing debt that is expiring or freely prepayable prior to February 2007. Based on swap spreads at each trade date, the swaps fix the 10-year treasury rate for a financing in February 2007 at a weighted average rate of 4.34% per annum on notional amounts aggregating $500.0 million. The swaps were to go into effect in February 2007 and expire in February 2017. We believe that these swaps qualify as highly-effective cash flow hedges under SFAS No. 133, “Accounting for Derivative Instruments and Hedging Activities,” as amended. On December 19, 2006, we entered into an interest rate lock agreement with a lender for a fixed interest rate of 5.57% per annum on a ten-year mortgage financing totaling $750.0 million to be collateralized by our 599 Lexington Avenue property in New York City. We closed on the mortgage financing on February 12, 2007. In conjunction with the interest rate lock agreement, we terminated the forward-starting interest rate swap contracts and received approximately $10.9 million, which amount will reduce our interest expense over the ten-year term of the financing, resulting in an effective interest rate of 5.38% per annum. We intend to consider entering into additional hedging arrangements to minimize our interest rate risk. We expect that within the next twelve months we will reclassify into earnings approximately $1.0 million of the amounts recorded within Accumulated Other Comprehensive Loss relating to the forward-starting interest rate swap contracts. See Note 6 to the Consolidated Financial Statements.

Additional disclosure about market risk is incorporated herein by reference from “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources—Market Risk.”

 

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Item 8. Financial Statements and Supplementary Data

BOSTON PROPERTIES LIMITED PARTNERSHIP

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

 

     Page

Management’s Report on Internal Control over Financial Reporting

   82

Report of Independent Registered Public Accounting Firm

   83

Consolidated Balance Sheets as of December 31, 2006 and 2005

   85

Consolidated Statements of Operations for the years ended December 31, 2006, 2005 and 2004

   86

Consolidated Statements of Partners’ Capital for the years ended December 31, 2006, 2005 and 2004

   87

Consolidated Statements of Comprehensive Income for the years ended December 31, 2006, 2005 and 2004

   88

Consolidated Statements of Cash Flows for the years ended December 31, 2006, 2005 and 2004

   89

Notes to Consolidated Financial Statements

   91

Financial Statement Schedule—Schedule III

   137

All other schedules for which a provision is made in the applicable accounting regulations of the Securities and Exchange Commission are not required under the related instructions or are inapplicable, and therefore have been omitted.

 

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Management’s Report on Internal Control over Financial Reporting

Management of Boston Properties, Inc., the sole general partner of Boston Properties Limited Partnership (“the Company”), is responsible for establishing and maintaining adequate internal control over financial reporting for the Company. The Company’s internal control over financial reporting is a process designed under the supervision of the Company’s principal executive and principal financial officers to provide reasonable assurance regarding the reliability of financial reporting and the preparation of the Company’s financial statements for external reporting purposes in accordance with U.S. generally accepted accounting principles.

As of the end of the Company’s 2006 fiscal year, management conducted assessments of the effectiveness of the Company’s internal control over financial reporting based on the framework established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on these assessments, management has determined that the Company’s internal control over financial reporting as of December 31, 2006 was effective.

Our internal control over financial reporting includes policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect transactions and dispositions of our assets; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S. generally accepted accounting principles, and that receipts and expenditures are being made only in accordance with authorizations of management and the directors of the Company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Company’s assets that could have a material effect on our financial statements.

Management’s assessment of the effectiveness of the Company’s internal control over financial reporting as of December 31, 2006 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in its report appearing on pages 83 and 84, which expresses unqualified opinions on management’s assessment and on the effectiveness of the Company’s internal control over financial reporting as of December 31, 2006.

 

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Report of Independent Registered Public Accounting Firm

To the Partners of

Boston Properties Limited Partnership:

We have completed integrated audits of Boston Properties Limited Partnership’s consolidated financial statements and of its internal control over financial reporting as of December 31, 2006 in accordance with the standards of the Public Company Accounting Oversight Board (United States). Our opinions, based on our audits, are presented below.

Consolidated Financial statements and financial statement schedule

In our opinion, the consolidated financial statements listed in the accompanying index present fairly, in all material respects, the financial position of Boston Properties Limited Partnership and its subsidiaries at December 31, 2006 and 2005, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2006 in conformity with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial statement schedule listed in the accompanying index presents fairly, in all material respects, the information set forth therein when read in conjunction with the related consolidated financial statements. These financial statements and financial statement schedule are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements and financial statement schedule based on our audits. We conducted our audits of these statements in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit of financial statements includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

As discussed in Note 2 to the consolidated financial statements, in the fourth quarter of 2005, the Company adopted Financial Accounting Standards Board Interpretation No. 47, “Accounting for Conditional Asset Retirement Obligations, an interpretation of FASB Statement No. 143.”

Internal control over financial reporting

Also, in our opinion, management’s assessment, included in Management’s Report on Internal Control over Financial Reporting appearing on page 82, that the Company maintained effective internal control over financial reporting as of December 31, 2006 based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO), is fairly stated, in all material respects, based on those criteria. Furthermore, in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2006, based on criteria established in Internal Control—Integrated Framework issued by the COSO. The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting. Our responsibility is to express opinions on management’s assessment and on the effectiveness of the Company’s internal control over financial reporting based on our audit. We conducted our audit of internal control over financial reporting in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. An audit of internal control over financial reporting includes obtaining an understanding of internal control over financial reporting, evaluating management’s assessment, testing and evaluating the design and operating effectiveness of internal control, and performing such other procedures as we consider necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinions.

 

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A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

Boston, Massachusetts

March 1, 2007

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

CONSOLIDATED BALANCE SHEETS

 

     December 31,
2006
    December 31,
2005
 
    

(in thousands, except for unit

amounts)

 
ASSETS     

Real estate, at cost:

   $ 9,211,351     $ 9,001,776  

Less: accumulated depreciation

     (1,382,920 )     (1,259,099 )
                

Total real estate

     7,828,431       7,742,677  

Cash and cash equivalents

     725,788       261,496  

Cash held in escrows

     25,784       25,618  

Tenant and other receivables (net of allowance for doubtful accounts of $2,682 and $2,519, respectively)

     57,052       52,668  

Accrued rental income (net of allowance of $783 and $2,638, respectively)

     327,337       302,356  

Deferred charges, net

     274,079       242,660  

Prepaid expenses and other assets

     40,868       41,261  

Investments in unconsolidated joint ventures

     83,711       90,207  
                

Total assets

   $ 9,363,050     $ 8,758,943  
                

LIABILITIES, REDEEMABLE PARTNERSHIP UNITS AND

PARTNERS’ CAPITAL

    

Liabilities:

    

Mortgage notes payable

   $ 2,679,462     $ 3,297,192  

Unsecured senior notes (net of discount of $3,525 and $3,938, respectively)

     1,471,475       1,471,062  

Unsecured exchangeable senior notes

     450,000       —    

Unsecured line of credit

     —         58,000  

Accounts payable and accrued expenses

     102,934       109,823  

Distributions payable

     857,892       107,643  

Accrued interest payable

     47,441       47,911  

Other liabilities

     239,084       154,123  
                

Total liabilities

     5,848,288       5,245,754  
                

Commitments and contingencies

     —         —    
                

Minority interests in property partnerships

     12,454       17,954  
                

Redeemable partnership units—1,719,230 and 3,701,335 preferred units outstanding (2,256,208 and 4,857,395 common units at redemption value, if converted) at December 31, 2006 and 2005, respectively, and 20,817,587 and 21,377,724 common units and 521,119 and 380,821 long term incentive units outstanding at redemption value at December 31, 2006 and 2005, respectively

     2,639,799       1,973,040  
                

Partners’ capital—1,388,422 and 1,343,008 general partner units and 116,115,120 and 111,199,254 limited partner units outstanding at December 31, 2006 and 2005, respectively (such amounts are inclusive of accumulated other comprehensive loss of $3,323 and $8,881 at December 31, 2006 and 2005, respectively)

     862,509       1,522,195  
                

Total liabilities, redeemable partnership units and partners’ capital

   $ 9,363,050     $ 8,758,943  
                

The accompanying notes are an integral part of these financial statements.

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF OPERATIONS

 

     For the Year Ended December 31,  
     2006     2005     2004  
     (In thousands, except for per unit
amounts)
 

Revenue

      

Rental:

      

Base rent

   $ 1,104,773     $ 1,110,212     $ 1,067,100  

Recoveries from tenants

     181,521       173,254       164,770  

Parking and other

     57,740       55,567       57,270  
                        

Total rental revenue

     1,344,034       1,339,033       1,289,140  

Hotel revenue

     76,990       69,277       66,427  

Development and management services

     19,825       17,310       20,440  

Interest and other

     36,737       12,015       10,339  
                        

Total revenue

     1,477,586       1,437,635       1,386,346  
                        

Expenses

      

Operating

      

Rental

     441,814       438,335       416,327  

Hotel

     55,538       51,689       49,442  

General and administrative

     59,375       55,471       53,636  

Interest

     298,260       308,091       306,170  

Depreciation and amortization

     272,608       264,182       247,924  

Losses from early extinguishments of debt

     32,143       12,896       6,258  
                        

Total expenses

     1,159,738       1,130,664       1,079,757  
                        

Income before minority interests in property partnerships, income from unconsolidated joint venures, gains on sales of real estate and other assets, discontinued operations, cumulative effect of a change in accounting principle and preferred distributions and allocation of undistributed earnings

     317,848       306,971       306,589  

Minority interests in property partnerships

     2,013       6,017       4,685  

Income from unconsolidated joint ventures

     24,507       4,829       3,380  
                        

Income before gains on sales of real estate and other assets, discontinued operations, cumulative effect of a change in accounting principle and preferred distributions and allocation of undistributed earnings

     344,368       317,817       314,654  

Gains on sales of real estate and other assets

     727,131       188,546       9,822  
                        

Income before discontinued operations, cumulative effect of a change in accounting principle and preferred distributions and allocation of undistributed earnings

     1,071,499       506,363       324,476  

Discontinued operations:

      

Income from discontinued operations

     —         2,279       4,030  

Gains on sales of real estate from discontinued operations

     —         57,969       33,427  
                        

Income before cumulative effect of a change in accounting principle and preferred distributions and allocation of undistributed earnings

     1,071,499       566,611       361,933  

Cumulative effect of a change in accounting principle

     —         (5,043 )     —    
                        

Income before preferred distributions and allocation of undistributed earnings

     1,071,499       561,568       361,933  

Preferred distributions and allocation of undistributed earnings

     (22,814 )     (26,780 )     (17,133 )
                        

Net income available to common unitholders

   $ 1,048,685     $ 534,788     $ 344,800  
                        

Basic earnings per common unit:

      

Income available to common unitholders before discontinued operations and cumulative effect of a change in accounting principle

   $ 7.72     $ 3.61     $ 2.40  

Discontinued operations

     —         0.45       0.29  

Cumulative effect of a change in accounting principle

     —         (0.04 )     —    
                        

Net income available to common unitholders

   $ 7.72     $ 4.02     $ 2.69  
                        

Weighted average number of common units outstanding

     135,923       132,881       128,313  
                        

Diluted earnings per common unit:

      

Income available to common unitholders before discontinued operations and cumulative effect of a change in accounting principle

   $ 7.58     $ 3.55     $ 2.35  

Discontinued operations

     —         0.45       0.29  

Cumulative effect of a change in accounting principle

     —         (0.04 )     —    
                        

Net income available to common unitholders

   $ 7.58     $ 3.96     $ 2.64  
                        

Weighted average number of common and common equivalent units outstanding

     138,279       135,166       130,617  
                        

The accompanying notes are an integral part of these financial statements.

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF PARTNERS’ CAPITAL

FOR THE YEARS ENDED DECEMBER 31, 2006, 2005 AND 2004

(dollars in thousands)

 

     Total
Partners’
Capital
 

Balance at December 31, 2003

   $ 1,721,149  

Contributions

     423,873  

Net income allocable to general and limited partner units

     286,081  

Distributions

     (279,465 )

Accumulated other comprehensive income

     698  

Unearned compensation

     717  

Conversion of redeemable partnership units

     56,843  

Adjustment to reflect redeemable partnership units at redemption value

     (381,324 )
        

Balance at December 31, 2004

     1,828,572  

Contributions

     48,674  

Net income allocable to general and limited partner units

     447,830  

Distributions

     (581,639 )

Accumulated other comprehensive income

     6,756  

Unearned compensation

     1,102  

Conversion of redeemable partnership units

     22,653  

Adjustment to reflect redeemable partnership units at redemption value

     (251,753 )
        

Balance at December 31, 2005

     1,522,195  

Contributions

     63,093  

Net income allocable to general and limited partner units

     885,091  

Distributions

     (947,585 )

Accumulated other comprehensive income

     5,558  

Unearned compensation

     3,806  

Conversion of redeemable partnership units

     87,347  

Adjustment to reflect redeemable partnership units at redemption value

     (756,996 )
        

Balance at December 31, 2006

   $ 862,509  
        

The accompanying notes are an integral part of these financial statements.

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF

COMPREHENSIVE INCOME

 

     For the year ended December 31,
     2006    2005    2004
     (in thousands)

Income before preferred distributions andallocation of undistributed earnings

   $ 1,071,499    $ 561,568    $ 361,933

Other comprehensive income:

        

Effective portion of interest ratecontracts

     4,860      6,058      —  

Amortization of interest rate contracts

     698      698      698
                    

Other comprehensive income

     5,558      6,756      698
                    

Comprehensive income

   $ 1,077,057    $ 568,324    $ 362,631
                    

The accompanying notes are an integral part of these financial statements.

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CASH FLOWS

 

     For the year ended December 31,  
     2006     2005     2004  
     (in thousands)  

Cash flows from operating activities:

      

Net income before preferred distributions and allocation of undistributed earnings

   $ 1,071,499     $ 561,568     $ 361,933  

Adjustments to reconcile net income before preferred distributions and allocation of undistributed earnings to net cash provided by operating activities

      

Depreciation and amortization

     272,608       264,994       251,216  

Non-cash portion of interest expense

     7,111       5,370       5,604  

Non-cash compensation expense

     8,578       7,389       4,262  

Minority interest in property partnerships

     (2,013 )     (6,017 )     6,848  

Distributions (earnings) in excess of earnings (distributions) from unconsolidated joint ventures

     (16,302 )     2,350       3,283  

Gains on sales of real estate and other assets

     (727,131 )     (246,515 )     (54,574 )

Losses from early extinguishments of debt

     31,877       2,042       —    

Loss from investment in joint venture

     —         342       —    

Cumulative effect of a change in accounting principle

     —         5,043       —    

Change in assets and liabilities:

      

Cash held in escrows

     (166 )     (3,828 )     (3,434 )

Tenant and other receivables, net

     (7,051 )     (31,378 )     (7,075 )

Accrued rental income, net

     (53,989 )     (64,742 )     (61,959 )

Prepaid expenses and other assets

     4,319       2,011       (92 )

Accounts payable and accrued expenses

     (2,502 )     4,148       (3,197 )

Accrued interest payable

     (470 )     (2,759 )     (261 )

Other liabilities

     (9,735 )     9,305       (13,495 )

Tenant leasing costs

     (48,654 )     (37,074 )     (59,553 )
                        

Total adjustments

     (543,520 )     (89,319 )     67,573  
                        

Net cash provided by operating activities

     527,979       472,249       429,506  
                        

Cash flows from investing activities:

      

Acquisitions/additions to real estate

     (642,024 )     (394,757 )     (277,684 )

Investments in marketable securities

     (282,764 )     (37,500 )     —    

Proceeds from sale of marketable securities

     —         37,500       —    

Net investments in unconsolidated joint ventures

     23,566       2,313       (944 )

Net proceeds from the sale of real estate placed in escrow

     (872,063 )     —         —    

Net proceeds from the sale of real estate released from escrow

     872,063       —         —    

Net proceeds from the sales of real estate and other assets

     1,130,978       749,049       107,614  
                        

Net cash provided by (used in) investing activities

     229,756       356,605       (171,014 )
                        

The accompanying notes are an integral part of these financial statements.

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CASH FLOWS

 

     For the year ended December 31,  
     2006     2005     2004  
     (in thousands)  

Cash flows from financing activities:

      

Borrowings on unsecured line of credit

     195,000       68,000       140,000  

Repayments of unsecured line of credit

     (253,000 )     (10,000 )     (203,000 )

Repayments of mortgage notes payable

     (408,139 )     (1,088,690 )     (216,731 )

Proceeds from mortgage notes payable

     41,887       844,751       168,517  

Proceeds from unsecured exchangeable senior notes

     450,000       —         —    

Proceeds from a real estate financing transaction

     21,195       48,972       —    

Payments on real estate financing transaction

     (5,987 )     —         —    

Distributions

     (391,613 )     (702,989 )     (342,815 )

Partner contributions

     63,418       45,020       422,070  

Contributions from minority interest holders

     11,404       —         4,005  

Redemption of OP Units

     —         (1,846 )     —    

Distributions to minority interest holders

     —         (5,426 )     (8,848 )

Redemption of minority interest

     (14,891 )     —         —    

Deferred financing costs

     (2,717 )     (4,494 )     (5,032 )
                        

Net cash used in financing activities

     (293,443 )     (806,702 )     (41,834 )
                        

Net increase in cash and cash equivalents

     464,292       22,152       216,658  

Cash and cash equivalents, beginning of period

     261,496       239,344       22,686  
                        

Cash and cash equivalents, end of period

   $ 725,788     $ 261,496     $ 239,344  
                        

Supplemental disclosures:

      

Cash paid for interest

   $ 297,541     $ 311,198     $ 311,676  
                        

Interest capitalized

   $ 5,921     $ 5,718     $ 10,849  
                        

Non-cash investing and financing activities:

      

Additions to real estate included in accounts payable

   $ 4,419     $ 10,223     $ 5,592  
                        

Mortgage notes payable assumed in connection with the acquisition of real estate

   $ —       $ —       $ 107,894  
                        

Mortgage notes payable assigned in connection with the sale of realestate

   $ —       $ —       $ 5,193  
                        

Distributions declared but not paid

   $ 857,892     $ 107,643     $ 91,428  
                        

Conversions of redeemable partnership units to partners’ capital

   $ 87,347     $ 22,653     $ 56,843  
                        

Marketable securities transferred in connection with the legal defeasance of mortgage note payable

   $ 282,764     $ —       $ —    
                        

Mortgage note payable legally defeased

   $ 254,385     $ —       $ —    
                        

Financing incurred in connection with the acquisition of real estate

   $ 45,559     $ —       $ —    
                        

Issuance of restricted units to employees

   $ 11,279     $ 11,680     $ 9,924  
                        

The accompanying notes are an integral part of these financial statements.

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

 

1. Organization and Basis of Presentation

Organization

Boston Properties Limited Partnership (the “Company”), a Delaware limited partnership, is the entity through which Boston Properties, Inc., a self-administered and self-managed real estate investment trust (“REIT”), conducts substantially all of its business and owns (either directly or through subsidiaries) substantially all of its assets. Boston Properties, Inc. is the sole general partner of the Company and at December 31, 2006 owned an approximate 83.3% (80.9% at December 31, 2005) general and limited partnership interest in the Company. Partnership interests in the Company are denominated as “common units of partnership interest” (also referred to as “OP Units”), “long term incentive units of partnership interest” (also referred to as “LTIP Units”) or “preferred units of partnership interest” (also referred to as “Preferred Units”).

Unless specifically noted otherwise, all references to OP Units exclude units held by Boston Properties, Inc. A holder of an OP Unit may present such OP Unit to the Company for redemption at any time (subject to restrictions agreed upon at the time of issuance of OP Units to particular holders that may restrict such redemption right for a period of time, generally one year from issuance). Upon presentation of an OP Unit for redemption, the Company must redeem such OP Unit for cash equal to the then value of a share of common stock of Boston Properties, Inc. (“Common Stock”). In lieu of a cash redemption, Boston Properties, Inc. may elect to acquire such OP Unit for one share of Common Stock. Because the number of shares of Common Stock outstanding at all times equals the number of OP Units that Boston Properties, Inc. owns, one share of Common Stock is generally the economic equivalent of one OP Unit, and the quarterly distribution that may be paid to the holder of an OP Unit equals the quarterly dividend that may be paid to the holder of a share of Common Stock. An LTIP Unit is generally the economic equivalent of a share of restricted common stock of Boston Properties, Inc. LTIP Units, whether vested or not, will receive the same quarterly per unit distributions as OP Units, which equal per share dividends on Common Stock (See Note 18).

At December 31, 2006, there was one series of Preferred Units outstanding (i.e., Series Two Preferred Units). The Series Two Preferred Units bear a distribution that is set in accordance with an amendment to the partnership agreement of the Company. Preferred Units may also be converted into OP Units at the election of the holder thereof or the Company in accordance with the amendment to the partnership agreement (See also Note 12).

All references to the Company refer to Boston Properties Limited Partnership and its consolidated subsidiaries, collectively, unless the context otherwise requires.

Properties

At December 31, 2006, the Company owned or had interests in a portfolio of 131 commercial real estate properties (121 properties at December 31, 2005) (the “Properties”) aggregating approximately 43.4 million net rentable square feet (approximately 42.0 million net rentable square feet at December 31, 2005), including six properties under construction totaling approximately 1.4 million net rentable square feet, and structured parking for approximately 32,553 vehicles containing approximately 10.0 million square feet. At December 31, 2006, the Properties consist of:

 

   

127 office properties, including 109 Class A office properties (including six properties under construction) and 18 Office/Technical properties;

 

   

two hotels; and

 

   

two retail properties.

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

The Company owns or controls undeveloped land parcels totaling approximately 524.3 acres. In addition, the Company has a 25% interest in the Boston Properties Office Value-Added Fund, L.P. (the “Value-Added Fund”), which is a strategic partnership with two institutional investors through which the Company has pursued the acquisition of value-added investments in assets within its existing markets. The Company’s investments through the Value-Added Fund are not included in its portfolio information or any other portfolio level statistics. At December 31, 2006, the Value-Added Fund had investments in an office complex in Herndon, Virginia, an office property in Chelmsford, Massachusetts and an office complex in San Carlos, California. The Value-Added Fund’s investment period expired on October 25, 2006.

The Company considers Class A office properties to be centrally located buildings that are professionally managed and maintained, that attract high-quality tenants and command upper-tier rental rates, and that are modern structures or have been modernized to compete with newer buildings. The Company considers Office/Technical properties to be properties that support office, research and development, laboratory and other technical uses. Net rentable square feet amounts are unaudited.

Basis of Presentation

Boston Properties, Inc. does not have any other significant assets, liabilities or operations, other than its investment in the Company, nor does it have employees of its own. The Company, not Boston Properties, Inc., executes all significant business relationships. All majority-owned subsidiaries and affiliates over which the Company has financial and operating control and variable interest entities (“VIE”s) in which the Company has determined it is the primary beneficiary are included in the consolidated financial statements. All significant intercompany balances and transactions have been eliminated in consolidation. The Company accounts for all other unconsolidated joint ventures using the equity method of accounting. Accordingly, the Company’s share of the earnings of these joint ventures and companies is included in consolidated net income.

In January 2003, the Financial Accounting Standards Board (“FASB”) issued FASB Interpretation No. 46, “Consolidation of Variable Interest Entities” (“FIN 46”). In December 2003, the FASB issued FIN 46R, “Consolidation of Variable Interest Entities,” which amended FIN 46. FIN 46R was effective immediately for arrangements entered into after January 31, 2003, and became effective during the first quarter of 2004 for all arrangements entered into before February 1, 2003. FIN 46R requires existing unconsolidated VIEs to be consolidated by their primary beneficiaries. The primary beneficiary of a VIE is the party that absorbs a majority of the entity’s expected losses or receives a majority of its expected residual returns, or both, as a result of holding variable interests, which are the ownership interests, contractual interests, or other pecuniary interests in an entity that change with changes in the fair value of the entity’s net assets excluding variable interests. Prior to FIN 46R, the Company included an entity in its consolidated financial statements only if it controlled the entity through voting interests. The adoption and application of FIN 46 and FIN 46R has not had a material impact on the Company’s consolidated financial statements.

 

2. Summary of Significant Accounting Policies

Real Estate

Upon acquisitions of real estate, the Company assesses the fair value of acquired tangible and intangible assets (including land, buildings, tenant improvements, “above-” and “below-market” leases, origination costs, acquired in-place leases, other identified intangible assets and assumed liabilities in accordance with Statement of Financial Accounting Standards (“SFAS”) No. 141, “Business Combinations”), and allocates the purchase price to the acquired assets and assumed liabilities, including land at appraised value and buildings at replacement cost. The Company assesses and considers fair value based on estimated cash flow projections that

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

utilize discount and/or capitalization rates that we deem appropriate, as well as available market information. Estimates of future cash flows are based on a number of factors including the historical operating results, known and anticipated trends, and market and economic conditions. The fair value of the tangible assets of an acquired property considers the value of the property as if it were vacant. The Company also considers an allocation of purchase price of other acquired intangibles, including acquired in-place leases that may have a customer relationship intangible value, including (but not limited to) the nature and extent of the existing relationship with the tenants, the tenant’s credit quality and expectations of lease renewals. Based on its acquisitions to date, the Company’s allocation to customer relationship intangible assets has been immaterial.

The Company records acquired “above-” and “below-market” leases at their fair value (using a discount rate which reflects the risks associated with the leases acquired) equal to the difference between (1) the contractual amounts to be paid pursuant to each in-place lease and (2) management’s estimate of fair market lease rates for each corresponding in-place lease, measured over a period equal to the remaining term of the lease for above-market leases and the initial term plus the term of any below-market fixed rate renewal options for below-market leases. Other intangible assets acquired include amounts for in-place lease values that are based on the Company’s evaluation of the specific characteristics of each tenant’s lease. Factors to be considered include estimates of carrying costs during hypothetical expected lease-up periods considering current market conditions, and costs to execute similar leases. In estimating carrying costs, the Company includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods, depending on local market conditions. In estimating costs to execute similar leases, the Company considers leasing commissions, legal and other related expenses.

Real estate is stated at depreciated cost. The cost of buildings and improvements includes the purchase price of property, legal fees and other acquisition costs. Costs directly related to the development of properties are capitalized. Capitalized development costs include interest, internal wages, property taxes, insurance, and other project costs incurred during the period of development.

The Company reviews its long-lived assets used in operations for impairment when there is an event or change in circumstances that indicates an impairment in value. An impairment loss is recognized if the carrying amount of its assets is not recoverable and exceeds its fair value. If such impairment is present, an impairment loss is recognized based on the excess of the carrying amount of the asset over its fair value. The evaluation of anticipated cash flows is highly subjective and is based in part on assumptions regarding future occupancy, rental rates and capital requirements that could differ materially from actual results in future periods. Since cash flows on properties considered to be “long-lived assets to be held and used,” as defined by SFAS No. 144, “Accounting for the Impairment or Disposal of Long-Lived Assets,” (“SFAS No. 144”) are considered on an undiscounted basis to determine whether an asset has been impaired, the Company’s established strategy of holding properties over the long term directly decreases the likelihood of recording an impairment loss. If the Company’s strategy changes or market conditions otherwise dictate an earlier sale date, an impairment loss may be recognized and such loss could be material. If the Company determines that impairment has occurred, the affected assets must be reduced to their fair value. No such impairment losses have been recognized to date.

SFAS No. 144, requires that qualifying assets and liabilities and the results of operations that have been sold, or otherwise qualify as “held for sale,” be presented as discontinued operations in all periods presented if the property operations are expected to be eliminated and the Company will not have significant continuing involvement following the sale. The components of the property’s net income that is reflected as discontinued operations include the net gain (or loss) upon the disposition of the property held for sale, operating results, depreciation and interest expense (if the property is subject to a secured loan). The Company generally considers assets to be “held for sale” when the transaction has been approved by the Board of Directors of Boston Properties, Inc., or a committee thereof, and there are no known significant contingencies relating to the sale,

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

such that the property sale within one year is considered probable. Following the classification of a property as “held for sale,” no further depreciation is recorded on the assets.

A variety of costs are incurred in the acquisition, development and leasing of properties. After determination is made to capitalize a cost, it is allocated to the specific component of a project that is benefited. Determination of when a development project is substantially complete and capitalization must cease involves a degree of judgment. The Company’s capitalization policy on development properties is guided by SFAS No. 34 “Capitalization of Interest Cost” and SFAS No. 67 “Accounting for Costs and the Initial Rental Operations of Real Estate Projects.” The costs of land and buildings under development include specifically identifiable costs. The capitalized costs include pre-construction costs essential to the development of the property, development costs, construction costs, interest costs, real estate taxes, salaries and related costs and other costs incurred during the period of development. The Company considers a construction project as substantially completed and held available for occupancy upon the completion of tenant improvements, but no later than one year from cessation of major construction activity. The Company ceases capitalization on the portion (1) substantially completed and (2) occupied or held available for occupancy, and capitalizes only those costs associated with the portion under construction. Interest costs capitalized for the years ended December 31, 2006, 2005 and 2004 were $5.9 million, $5.7 million and $10.8 million, respectively. Salaries and related costs capitalized for the years ended December 31, 2006, 2005 and 2004 were $4.2 million, $3.9 million and $4.4 million, respectively.

Expenditures for repairs and maintenance are charged to operations as incurred. Significant betterments are capitalized. When assets are sold or retired, their costs and related accumulated depreciation are removed from the accounts with the resulting gains or losses reflected in net income or loss for the period.

Certain of the Company’s real estate assets contain asbestos. Although the asbestos is appropriately encapsulated, in accordance with current environmental regulations, the Company’s practice is to remediate the asbestos upon the renovation or redevelopment of its properties. In March 2005, the FASB issued Interpretation No. 47, “Accounting for Conditional Asset Retirement Obligations, an interpretation of FASB Statement No. 143” (“FIN 47”). FIN 47 clarifies that the term “conditional asset retirement obligation” as used in FASB Statement No. 143, “Accounting for Asset Retirement Obligations,” refers to a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement are conditional on a future event that may or may not be within the control of the entity. The legal obligation to perform the asset retirement activity is unconditional even though uncertainty exists about the timing and/or method of settlement. FIN 47 requires an entity to recognize a liability for the fair value of a conditional asset retirement obligation if the fair value of the liability can be reasonably estimated. The fair value of a liability for the conditional asset retirement obligation should be recognized when incurred—generally upon the acquisition, construction, or development and/or through the normal operation of an asset. FIN 47 also clarifies when an entity would have sufficient information to reasonably estimate the fair value of an asset retirement obligation. FIN 47 became effective and was adopted by the Company on December 31, 2005.

The Company computes depreciation and amortization on properties using the straight-line method based on estimated useful asset lives. In accordance with SFAS No. 141, the Company allocates the acquisition cost of real estate to land, building, tenant improvements, acquired “above-” and “below-market” leases, origination costs and acquired in-place leases based on an assessment of their fair value and depreciates or amortizes these assets (or liabilities) over their useful lives. The amortization of acquired “above-” and “below-market” leases and acquired in-place leases is recorded as an adjustment to revenue and depreciation and amortization, respectively, in the Consolidated Statements of Operations.

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

Depreciation is computed on a straight-line basis over the estimated useful lives of the assets as follows:

 

Land improvements

   25 to 40 years

Buildings and improvements

   10 to 40 years

Tenant improvements

   Shorter of useful life or terms of related lease

Furniture, fixtures, and equipment

   3 to 7 years

Cash and Cash Equivalents

Cash and cash equivalents consist of cash on hand and investments with maturities of three months or less from the date of purchase. The majority of the Company’s cash and cash equivalents are held at major commercial banks which may at times exceed the Federal Deposit Insurance Corporation limit of $100,000. The Company has not experienced any losses to date on its invested cash.

Cash Held in Escrows

Escrows include amounts established pursuant to various agreements for security deposits, property taxes, insurance and other costs.

Investments in Securities

The Company accounts for investments in securities of publicly traded companies in accordance with SFAS No. 115 “Accounting for Certain Investments in Debt and Equity Investments.” Investments in securities of non-publicly traded companies are recorded at cost, as they are not considered marketable under SFAS No. 115. At December 31, 2006 and 2005, the Company had insignificant investments in securities.

Tenant and other receivables

Tenant and other accounts receivable, other than accrued rents receivable, are expected to be collected within one year.

Deferred Charges

Deferred charges include leasing costs and financing fees. Leasing costs include an allocation for acquired intangible in-place lease values and direct and incremental fees and costs incurred in the successful negotiation of leases, including brokerage, legal, internal leasing employee salaries and other costs which have been deferred and are being amortized on a straight-line basis over the terms of the respective leases. Internal leasing salaries and related costs capitalized for the years ended December 31, 2006, 2005 and 2004 were $2.8 million, $2.0 million and $1.5 million, respectively. External fees and costs incurred to obtain long-term financing have been deferred and are being amortized over the terms of the respective loans on a basis that approximates the effective interest method and are included with interest expense. Unamortized financing and leasing costs are charged to expense upon the early repayment or significant modification of the financing or upon the early termination of the lease, respectively. Fully amortized deferred charges are removed from the books upon the expiration of the lease or maturity of the debt.

Investments in Unconsolidated Joint Ventures

Except for ownership interests in a variable interest entity, the Company accounts for its investments in joint ventures under the equity method of accounting because it exercises significant influence over, but does not

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

control, these entities. These investments are recorded initially at cost, as Investments in Unconsolidated Joint Ventures, and subsequently adjusted for equity in earnings and cash contributions and distributions. Any difference between the carrying amount of these investments on the balance sheet and the underlying equity in net assets is amortized as an adjustment to equity in earnings of unconsolidated joint ventures over the life of the related asset. Under the equity method of accounting, the net equity investment of the Company is reflected within the Consolidated Balance Sheets, and the Company’s share of net income or loss from the joint ventures is included within the Consolidated Statements of Operations. The joint venture agreements may designate different percentage allocations among investors for profits and losses, however, the Company’s recognition of joint venture income or loss generally follows the joint venture’s distribution priorities, which may change upon the achievement of certain investment return thresholds. For ownership interests in variable interest entities, the Company consolidates those in which it is the primary beneficiary.

To the extent that the Company contributes assets to a joint venture, the Company’s investment in joint venture is recorded at the Company’s cost basis in the assets that were contributed to the joint venture. To the extent that the Company’s cost basis is different than the basis reflected at the joint venture level, the basis difference is amortized over the life of the related asset and included in the Company’s share of equity in net income of the joint venture. In accordance with the provisions of Statement of Position 78-9 “Accounting for Investments in Real Estate Ventures,” the Company will recognize gains on the contribution of real estate to joint ventures, relating solely to the outside partner’s interest, to the extent the economic substance of the transaction is a sale.

Revenue Recognition

Base rental revenue is reported on a straight-line basis over the terms of the respective leases. The impact of the straight-line rent adjustment increased revenue by approximately $53.7 million, $66.0 million and $61.3 million for the years ended December 31, 2006, 2005 and 2004, respectively, as the revenue recorded exceeded amounts billed. In accordance with SFAS No. 141, the Company recognizes rental revenue of acquired in-place “above-” and “below-market” leases at their fair values over the terms of the respective leases. Accrued rental income, as reported on the Consolidated Balance Sheets, represents rental income earned in excess of rent payments received pursuant to the terms of the individual lease agreements. The Company maintains an allowance against accrued rental income for future potential tenant credit losses. The credit assessment is based on the estimated accrued rental income that is recoverable over the term of the lease. The Company also maintains an allowance for doubtful accounts for estimated losses resulting from the inability of tenants to make required rent payments. The computation of this allowance is based on the tenants’ payment history and current credit status, as well as certain industry or geographic specific credit considerations. If the Company’s estimates of collectibility differ from the cash received, then the timing and amount of the Company’s reported revenue could be impacted. The credit risk is mitigated by the high quality of the Company’s existing tenant base, reviews of prospective tenant’s risk profiles prior to lease execution and continual monitoring of the Company’s portfolio to identify potential problem tenants.

Recoveries from tenants, consisting of amounts due from tenants for common area maintenance, real estate taxes and other recoverable costs are recognized as revenue in the period the expenses are incurred. Tenant reimbursements are recognized and presented in accordance with EITF Issue 99-19 “Reporting Revenue Gross as a Principal versus Net as an Agent” (“Issue 99-19”). Issue 99-19 requires that these reimbursements be recorded on a gross basis, as the Company is generally the primary obligor with respect to purchasing goods and services from third- party suppliers, has discretion in selecting the supplier and has credit risk. The Company also receives reimbursement of payroll and payroll related cost from third parties which we reflect on a net basis in accordance with Issue 99-19.

 

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The Company’s hotel revenues are derived from room rentals and other sources such as charges to guests for long-distance telephone service, fax machine use, movie and vending commissions, meeting and banquet room revenue and laundry services. Hotel revenues are recognized as earned.

The Company receives management and development fees from third parties. Management fees are recorded and earned based on a percentage of collected rents at the properties under management, and not on a straight-line basis, because such fees are contingent upon the collection of rents. The Company reviews each development agreement and records development fees on a straight-line basis or percentage of completion depending on the risk associated with each project. Profit on development fees earned from joint venture projects is recognized as revenue to the extent of the third party partners’ ownership interest.

Gains on sales of real estate are recognized pursuant to the provisions of SFAS No. 66 “Accounting for Sales of Real Estate.” The specific timing of a sale is measured against various criteria in SFAS No. 66 related to the terms of the transaction and any continuing involvement in the form of management or financial assistance associated with the properties. If the sales criteria are not met, the Company defers gain recognition and accounts for the continued operations of the property by applying the finance, installment or cost recovery methods, as appropriate, until the sales criteria are met.

Interest Expense and Interest Rate Protection Agreements

From time to time, the Company enters into interest rate protection agreements to reduce the impact of changes in interest rates on its variable rate debt or in anticipation of issuing fixed rate debt. The fair value of these agreements is reflected on the Consolidated Balance Sheets. Changes in the fair value of these agreements would be recorded in the Consolidated Statements of Operations if the agreements were not effective for accounting purposes.

Earnings Per Common Unit

Basic earnings per common unit is computed by dividing net income available to common unitholders, as adjusted for unallocated earnings (if any) of certain securities issued by the Company, by the weighted average number of common units outstanding during the year. Diluted earnings per common unit reflects the potential dilution that could occur from units issuable under Boston Properties, Inc.’s stock-based compensation plans, including upon the exercise of stock options, and conversion of preferred units of the Company.

Fair Value of Financial Instruments

The carrying values of cash and cash equivalents, escrows, receivables, accounts payable, accrued expenses and other assets and liabilities are reasonable estimates of their fair values because of the short maturities of these instruments.

For purposes of disclosure, the Company calculates the fair value of mortgage notes payable and unsecured senior notes. The Company discounts the spread between the future contractual interest payments and future interest payments on mortgage debt and unsecured notes based on a current market rate. In determining the current market rate, the Company adds its estimation of a market spread to the quoted yields on federal government treasury securities with similar maturity dates to its debt. Because the Company’s valuations of its financial instruments are based on these types of estimates, the fair value of its financial instruments may change if the Company’s estimates do not prove to be accurate. The fair value of the Company’s long-term indebtedness exceeds the aggregate carrying value by approximately $182.7 million at December 31, 2006.

 

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Income Taxes

The partners are required to report their respective share of the Company’s taxable income or loss on their respective income tax returns and are liable for any related taxes thereon. Accordingly, the only provision for federal income taxes in the accompanying consolidated financial statements relates to the Company’s consolidated taxable REIT subsidiaries. The Company’s taxable REIT subsidiaries did not have significant tax provisions or deferred income tax items.

In January 2002, the Company formed a taxable REIT subsidiary (“TRS”), IXP, Inc. (IXP) which acts as a captive insurance company and is one of the elements of its overall insurance program. On September 27, 2006, IXP, Inc. was merged into IXP, LLC, a wholly owned subsidiary, and all insurance policies issued by IXP, Inc. were cancelled and reissued by IXP, LLC. The accounts of IXP are consolidated within the Company. IXP, Inc. was a captive TRS that was subject to tax at the federal and state level. Accordingly, the Company has recorded a tax provision in the Company’s Consolidated Statements of Operations for the years ended December 31, 2006, 2005 and 2004.

Effective July 1, 2002, the Company restructured the leases with respect to its ownership of the hotel properties by forming a TRS. The hotel TRS, a wholly owned subsidiary of the Company, is the lessee pursuant to leases for each of the hotel properties. As lessor, the Company is entitled to a percentage of gross receipts from the hotel properties. Marriott International, Inc. continues to manage the hotel properties under the Marriott name and under terms of the existing management agreements. In connection with the restructuring, the revenue and expenses of the hotel properties are being reflected in the Company’s Consolidated Statements of Operations. The hotel TRS is subject to tax at the federal and state level and, accordingly, the Company has recorded a tax provision in the Company’s Consolidated Statements of Operations for the years ended December 31, 2006, 2005 and 2004.

The net difference between the tax basis and the reported amounts of the Company’s assets and liabilities is approximately $361 million and $1.4 billion as of December 31, 2006 and 2005, respectively.

Certain entities included in the Company’s consolidated financial statements are subject to certain state and local taxes. These taxes are recorded as operating expenses in the accompanying consolidated financial statements.

The following reconciles GAAP net income to taxable income:

 

     For the year ended December 31,  
     2006     2005     2004  
     (in thousands)  

Net income before preferred distributions and allocation of undistributed earnings

   $ 1,071,499     $ 561,568     $ 361,933  

Straight-line rent adjustments

     (57,713 )     (65,563 )     (62,302 )

Book/Tax differences from depreciation and amortization

     69,842       74,108       58,721  

Book/Tax differences on gains/losses from capital transactions

     76,442       61,608       (23,086 )

Book/Tax differences from stock-based compensation

     (119,189 )     (42,561 )     (79,153 )

Other book/tax differences, net

     (31,541 )     (16,982 )     (9,626 )
                        

Taxable income

   $ 1,009,340     $ 572,178     $ 246,487  
                        

 

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Stock-based employee compensation plans

At December 31, 2006, Boston Properties, Inc. has stock-based employee compensation plan. Effective January 1, 2005, the Company adopted the fair value recognition provisions of Financial Accounting Standards Board (“FASB”) Statement of Financial Accounting Standards (“SFAS”) No. 123, “Accounting for Stock-Based Compensation,” as amended by SFAS No. 148, “Accounting for Stock-Based Compensation—Transition and Disclosure, an amendment of FASB Statement No. 123,” using the modified prospective application method for stock compensation awards. In addition, effective January 1, 2005, the Company adopted early SFAS No. 123 (revised) (“SFAS No. 123R”), “Share-Based Payment,” which revised the fair value based method of accounting for share-based payment liabilities, forfeitures and modifications of stock-based awards and clarified SFAS No. 123’s guidance in several areas, including measuring fair value, classifying an award as equity or as a liability and attributing compensation cost to reporting periods. In 2003, Boston Properties, Inc. transitioned to granting restricted stock and/or LTIP Units, as opposed to granting stock options, as its primary vehicle for employee equity compensation under its stock-based employee compensation plan. The Company had previously accounted for its stock-based employee compensation plans under the recognition and measurement principles of the Accounting Principles Board (“APB”) Opinion No. 25, “Accounting for Stock Issued to Employees,” and related interpretations. All outstanding options had an exercise price equal to the market value of the underlying common stock on the date of grant, and all outstanding options are currently exercisable. As a result, the following table only illustrates the effect on net income available to common unitholders and earnings per common unit if the Company had applied the fair value recognition provisions to stock-based employee compensation for the year ended December 31, 2004 (in thousands, except for per unit amounts).

 

     2004  

Net income available to common unitholders

   $ 344,800  

Deduct: Total stock-based employee compensation expense determined under the fair value method for all awards

     (1,807 )
        

Pro forma net income available to common unitholders

   $ 342,993  
        

Earnings per common unit:

  

Basic—as reported

   $ 2.69  
        

Basic—pro forma

   $ 2.67  
        

Diluted—as reported

   $ 2.64  
        

Diluted—pro forma

   $ 2.63  
        

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. These estimates include such items as depreciation and allowances for doubtful accounts. Actual results could differ from those estimates.

 

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3. Real Estate

Real estate consisted of the following at December 31 (in thousands):

 

     2006     2005  

Land

   $ 1,661,823     $ 1,812,492  

Land held for future development

     179,498       244,740  

Real estate held for sale, net

     410,860       —    

Buildings and improvements

     6,110,668       6,105,674  

Tenant improvements

     707,909       636,931  

Furniture, fixtures and equipment

     24,964       24,363  

Development in process

     115,629       177,576  
                

Total

     9,211,351       9,001,776  

Less: Accumulated depreciation

     (1,382,920 )     (1,259,099 )
                
   $ 7,828,431     $ 7,742,677  
                

Acquisitions

On April 13, 2006, the Company acquired a parcel of land located in Waltham, Massachusetts for a purchase price of $16.0 million. On October 27, 2006, the Company acquired an adjacent parcel of land located in Waltham, Massachusetts for a purchase price of approximately $5.6 million.

On June 30, 2006, the Company acquired 303 Almaden Boulevard, a Class A office property with approximately 157,000 net rentable square feet located in San Jose, California, at a purchase price of approximately $45.2 million. The acquisition was financed with available cash.

On August 10, 2006, the Company acquired 3200 Zanker Road, a Class A office complex with approximately 544,000 net rentable square feet located in San Jose, California, at a purchase price of approximately $126.0 million. The acquisition was financed with available cash.

On November 30, 2006, the Company acquired Four and Five Cambridge Center and the Cambridge Center East Garage located in Cambridge, Massachusetts, at a purchase price of approximately $186.0 million. This property consists of two Class A office properties totaling approximately 436,000 net rentable square feet and structured parking for approximately 840 vehicles totaling approximately 300,000 square feet. The acquisition was financed with available cash.

On December 22, 2006, the Company executed a contract to acquire Kingstowne Towne Center, a mixed-use property located in Alexandria, Virginia, at a purchase price of approximately $134.0 million. This property is comprised of two Class A office properties totaling approximately 307,000 net rentable square feet and a retail/movie theater complex totaling approximately 88,000 net rentable square feet. The acquisition is subject to the satisfaction of customary closing conditions and there can be no assurance that the acquisition will be consummated on the terms currently contemplated or at all.

Development

On January 17, 2006, the Company placed-in-service its Seven Cambridge Center development project located in Cambridge, Massachusetts. Seven Cambridge Center is a fully-leased, build-to-suit project with approximately 231,000 net rentable square feet of office, research laboratory and retail space.

 

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On March 31, 2006, the Company commenced construction of South of Market, a Class A office project consisting of three buildings aggregating approximately 652,000 net rentable square feet located in Reston, Virginia.

On April 1, 2006, the Company placed-in-service 12290 Sunrise Valley, a 182,000 net rentable square foot Class A office property located in Reston, Virginia.

On July 22, 2006, the Company placed-in-service its Capital Gallery expansion project, consisting of a ten-story addition totaling approximately 319,000 net rentable square feet of Class A office space located in Washington, D.C.

On September 18, 2006, the Company commenced construction of 77 Fourth Avenue, a Class A office project with approximately 210,000 net rentable square feet, located in Waltham, Massachusetts.

On December 6, 2006, the Company commenced construction of One Preserve Parkway, a Class A office property totaling approximately 183,000 net rentable square feet located in Rockville, Maryland.

Dispositions

On February 23, 2005, the Company sold a parcel of land at the Prudential Center located in Boston, Massachusetts for a net sale price of approximately $31.5 million and an additional obligation of the buyer to fund approximately $19.6 million of development-related costs at the Prudential Center for aggregate proceeds of $51.1 million. Due to the structure of the transaction and certain continuing involvement provisions related to the development of the property, this transaction did not initially qualify as a sale for financial reporting purposes and had been accounted for as a financing transaction. On January 3, 2006, the continuing involvement provisions expired and the Company recognized a gain on sale of approximately $5.7 million.

On June 6, 2006, the Company sold 280 Park Avenue, a 1,179,000 net rentable square foot Class A office property located in midtown Manhattan, New York, for approximately $1.2 billion. Net proceeds totaled approximately $875 million after legal defeasance of indebtedness secured by the property (consisting of approximately $254.4 million of principal indebtedness and approximately $28.2 million of related defeasance costs) and the payment of transfer taxes, brokers’ fees and other customary closing costs. At closing, the Company recognized a gain on sale of approximately $699.8 million. The net proceeds from the sale were recorded in Cash Held in Escrows in the Company’s Consolidated Balance Sheets because the cash was held in escrow by a qualifying intermediary for the purpose of potentially accomplishing a like-kind exchange under Section 1031 of the Internal Revenue Code. The Company did not identify any qualifying replacement assets to accomplish the like-kind exchange by the statutory expiration date of July 21, 2006 and, as a result, the cash was released from escrow and returned to the Company with no restrictions as to its use. Pursuant to the purchase and sale agreement, the Company entered into a master lease agreement with the buyer at closing. Under the master lease agreement, the Company has guaranteed that the buyer will receive at least a minimum amount of base rent from approximately 74,340 square feet of space during the ten-year period following the expiration of the current leases for this space. The current leases for this space are scheduled to expire at various times between June 2006 and October 2007. The aggregate amount of base rent guaranteed by the Company over the entire period from 2006 to 2017 is approximately $67.3 million. The Company’s guarantee obligations, which are in the form of base rent payments to the buyer, will be reduced by the amount of base rent payable, whether or not actually paid, under qualifying leases for this space that are obtained by the Company from prospective tenants. The Company will remain responsible for any free rent periods. The buyer will bear all customary leasing costs for this space, including tenant improvements and leasing commissions. The recognized gain on sale of the property had been reduced by approximately $67.3 million, representing the Company’s maximum obligation under the master lease. Such amount has been deferred and recorded in Other Liabilities in the Company’s Consolidated

 

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Balance Sheets and will be reduced as (1) payments are made under the master lease or (2) as qualifying leases are signed by the Company, at which time the Company will recognize additional gain on sale. Subsequent to the sale, the Company signed new qualifying leases for 26,681 net rentable square feet of the 74,340 net rentable square foot master lease obligation, resulting in the recognition of approximately $21.0 million of additional gain on sale of real estate. As of December 31, 2006, the master lease obligation totaled approximately $45.8 million. As part of the transaction, the buyer has engaged the Company as the property manager and leasing agent for 280 Park Avenue for a one-year term that renews automatically. Either party has the right to terminate this relationship at any time after the termination or expiration of the master lease agreement described above. The Company will recognize management fees on a fair value basis over the term of the agreement. As a result, the recognized gain on sale of the property has been reduced by approximately $16.6 million, representing the difference between the management fees to be received by the Company and the fair value of the management fees. Such amount has been deferred and recorded in Other Liabilities in the Company’s Consolidated Balance Sheets and will be recognized as management services revenue over the term of the management agreement. Under the purchase and sale agreement, the Company has also agreed to provide to the buyer fixed monthly revenue support from the closing date until December 31, 2008. The aggregate amount of the revenue support payments will be approximately $22.5 million and has been recorded as a purchase price adjustment and included in Other Liabilities within the Company’s Consolidated Balance Sheets. As of December 31, 2006, the revenue support obligation totaled approximately $15.2 million. Due to the Company’s continuing involvement through an agreement with the buyer to manage and lease the property for a fee after the sale and the financial obligations discussed above, this property has not been categorized as discontinued operations in the accompanying Consolidated Statements of Operations (See Note 20).

On November 17, 2006, the Company executed a binding agreement for the sale of the long-term leasehold interest in 5 Times Square in New York City and related credits, for approximately $1.28 billion in cash. 5 Times Square is a fully-leased Class A office tower that contains approximately 1,101,779 net rentable square feet. In conjunction with the sale, the Company has agreed to provide to the buyer monthly revenue support from the closing date until December 31, 2008. The aggregate amount of the revenue support payments will be approximately $1.6 million. As part of the transaction, the buyer has agreed to engage the Company as the property manager for 5 Times Square for a five-year term. Either party will have the right to terminate this relationship at any time after four years upon giving the other party six (6) months advance notice. If not terminated, the agreement will automatically renew for successive one-year terms unless terminated by either party upon ninety (90) days advance notice. Due to the Company’s continuing involvement through an agreement with the buyer to manage the property for a fee after the sale and the financial obligations discussed above, this property has not been categorized as discontinued operations in the accompanying Consolidated Statements of Operations (See Note 20). At December 31, 2006, the Company had categorized 5 Times Square as “Held for Sale” in its Consolidated Balance Sheets (See Note 20). The sale was completed on February 15, 2007 (See Note 23).

 

4. Deferred Charges

Deferred charges consisted of the following at December 31, (in thousands):

 

     2006     2005  

Leasing costs

   $ 355,290     $ 302,173  

Financing costs

     69,608       79,032  
                
     424,898       381,205  

Less: Accumulated amortization

     (150,819 )     (138,545 )
                
   $ 274,079     $ 242,660  
                

 

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

5. Investments in Unconsolidated Joint Ventures

The investments in unconsolidated joint ventures consists of the following at December 31, 2006:

 

Entity

  

Properties

   Nominal %
Ownership
 

Square 407 Limited Partnership

   Market Square North      50.0 %

The Metropolitan Square Associates LLC

   Metropolitan Square      51.0 %(1)

BP/CRF 265 Franklin Street Holdings LLC

   265 Franklin Street      35.0 %

BP/CRF 901 New York Avenue LLC

   901 New York Avenue      25.0 %(2)

KEG Associates I, LLC

   505 9th Street      50.0 %(3)

Wisconsin Place Entities

   Wisconsin Place      23.9 %(3)(4)

New York Land Venture

   New York Land      50.0 %(3)

Boston Properties Office Value-Added Fund, L.P.

  

Worldgate Plaza, 300

Billerica Road and One & Two Circle Star Way

     25.0 %(2)

(1) This joint venture is accounted for under the equity method due to participatory rights of the outside partner.
(2) The Company’s economic ownership can increase based on the achievement of certain return thresholds.
(3) The property is not in operation (i.e., under construction).
(4) Represents the Company’s effective ownership interest. The Company has a 66.67%, 5% and 0% interest in the office, retail and residential joint venture entities, respectively, which each own a 33.33% interest in the entity developing and owning the land and infrastructure of the project.

Certain of the Company’s joint venture agreements include provisions whereby, at certain specified times, each partner has the right to initiate a purchase or sale of its interest in the joint ventures at an agreed upon fair value. Under these provisions, the Company is not compelled to purchase the interest of its outside joint venture partners.

On March 13, 2006, a joint venture in which the Company has a 50% interest acquired a land parcel located in New York City for a purchase price of approximately $6.0 million. In addition, on May 8, 2006, the joint venture acquired additional land parcels located in New York City for an aggregate purchase price of approximately $15.3 million. On May 8, 2006, the joint venture obtained mortgage financing collateralized by the land parcels totaling approximately $23.6 million. The mortgage financing bears interest at a variable rate equal to LIBOR plus 2.25% per annum and matures in May 2008. The Company and its third-party joint venture partner have each agreed to guarantee approximately $11.8 million of the mortgage loan.

On August 31, 2006, the Company’s Value-Added Fund acquired One and Two Circle Star Way, a 208,000 net rentable square foot office complex located in San Carlos, California, at a purchase price of approximately $63.5 million. The acquisition was financed with new mortgage indebtedness totaling $42.0 million and approximately $21.5 million in cash, of which the Company’s share was approximately $5.4 million. The mortgage financing requires interest-only payments at a fixed interest rate of 6.57% per annum and matures in September 2013.

On September 15, 2006, a joint venture in which the Company has a 35% interest sold 265 Franklin Street, a Class A office property with approximately 347,000 net rentable square feet located in Boston, Massachusetts, for approximately $170.0 million. Net cash proceeds totaled approximately $108.3 million, of which the

 

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Company’s share was approximately $37.9 million, after the repayment of the mortgage indebtedness of approximately $60.8 million and unfunded tenant obligations and other closing costs of approximately $0.9 million, resulting in a gain on sale of approximately $51.4 million. The Company’s share of the gain on sale was approximately $18.0 million, which has been included in Income from Unconsolidated Joint Ventures in the accompanying Consolidated Statements of Operations. In connection with the repayment of the mortgage indebtedness on the property, the joint venture recognized a loss from early extinguishment of debt totaling approximately $0.2 million, consisting of the write-off of unamortized deferred financing costs. The mortgage loan bore interest at a variable rate equal to LIBOR plus 1.10% per annum and was scheduled to mature in September 2007.

The combined summarized financial information of the unconsolidated joint ventures is as follows (in thousands):

 

     December 31,

Balance Sheets

   2006    2005

Real estate and development in process, net

   $ 760,139    $ 733,908

Other assets

     87,759      67,654
             

Total assets

   $ 847,898    $ 801,562
             

Mortgage and Notes payable (1)

   $ 630,254    $ 587,727

Other liabilities

     36,991      18,717

Members’/Partners’ equity

     180,653      195,118
             

Total liabilities and members’/partners’ equity

   $ 847,898    $ 801,562
             

Company’s share of equity

   $ 81,053    $ 87,489

Basis differential (2)

     2,658      2,718
             

Carrying value of the Company’s investments in unconsolidated joint ventures

   $ 83,711    $ 90,207
             

(1) The Company and its third-party joint venture partners in the Wisconsin Place Entities have guaranteed the seller financing totaling $15.5 million related to the acquisition of the land by the Land and Infrastructure Entity. The Company and its third-party joint venture partners in the New York Land Venture have each agreed to guarantee approximately $11.8 million of the mortgage loan. The fair value of the Company’s stand-ready obligations related to the issuance of these guarantees is immaterial.
(2) This amount represents the aggregate difference between the Company’s historical cost basis and the basis reflected at the joint venture level, which is typically amortized over the life of the related asset. Basis differentials occur primarily upon the transfer of assets that were previously owned by the Company into a joint venture. In addition, certain acquisition, transaction and other costs may not be reflected in the net assets at the joint venture level.

 

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

Statements of Operations

   Year Ended December 31,
     2006    2005    2004
     (in thousands)

Total revenue

   $ 103,050    $ 96,189    $ 66,755

Expenses

        

Operating

     33,595      31,354      21,241

Interest

     34,899      32,469      21,821

Depreciation and amortization

     23,959      22,354      14,928

Loss from early extinguishment of debt

     205      —        —  
                    

Total expenses

     92,658      86,177      57,990
                    

Income before gain on sale of real estate

     10,392      10,012      8,765

Gain on sale of real estate

     51,384      —        —  
                    

Net income

   $ 61,776    $ 10,012    $ 8,765
                    

Company’s share of net income

   $ 24,507    $ 4,829    $ 3,380
                    

 

6. Mortgage Notes Payable

The Company had outstanding mortgage notes payable totaling approximately $2.7 billion and $3.3 billion as of December 31, 2006 and 2005, respectively, each collateralized by one or more buildings and related land included in real estate assets. The mortgage notes payable are generally due in monthly installments and mature at various dates through August 1, 2021.

Fixed rate mortgage notes payable totaled approximately $2.0 billion and $2.5 billion at December 31, 2006 and 2005, respectively, with interest rates ranging from 5.55% to 8.54% per annum (averaging 7.08% and 7.15% at December 31, 2006 and 2005, respectively).

Variable rate mortgage notes payable (including construction loans payable) totaled approximately $711.5 million and $816.1 million at December 31, 2006 and 2005, respectively, with interest rates ranging from 0.25% to 1.25% above the London Interbank Offered Rate (“LIBOR”) in 2006 and ranging from 0.32% to 1.65% above LIBOR in 2005. As of December 31, 2006 and 2005, the LIBOR rate was 5.32% and 4.39%, respectively.

On January 31, 2006, the Company used available cash to repay the mortgage loan collateralized by its 101 Carnegie Center property located in Princeton, New Jersey totaling approximately $6.6 million. There was no prepayment penalty associated with the repayment. The mortgage loan bore interest at a fixed rate of 7.66% per annum and was scheduled to mature on April 1, 2006.

On February 24, 2006, the Company repaid the construction financing collateralized by its Seven Cambridge Center property located in Cambridge, Massachusetts totaling approximately $112.5 million using approximately $7.5 million of available cash and $105.0 million drawn under the Company’s Unsecured Line of Credit. There was no prepayment penalty associated with the repayment. The Company recognized a loss from early extinguishment of debt totaling approximately $0.5 million consisting of the write-off of unamortized deferred financing costs. The construction financing bore interest at a variable rate equal to LIBOR plus 1.10% per annum and was scheduled to mature in April 2007.

On June 5, 2006, the Company used available cash to repay the mortgage loan collateralized by its 191 Spring Street property located in Lexington, Massachusetts totaling approximately $17.9 million. There was no prepayment penalty associated with the repayment. The mortgage loan bore interest at a fixed rate of 8.50% per annum and was scheduled to mature on September 1, 2006.

 

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On June 6, 2006, in connection with the sale of 280 Park Avenue, the Company legally defeased the mortgage indebtedness collateralized by the property totaling approximately $254.4 million. The mortgage financing bore interest at a fixed rate equal to 7.64% per annum and was scheduled to mature in February 2011. The Company acquired U.S. Treasuries totaling approximately $282.6 million to substitute as collateral for the loan and which became the sole source of payment of the loan. The Company transferred the mortgage loan and U.S. Treasuries to a third-party successor entity and has been legally released as the primary obligor with respect to the loan. The defeasance was accounted for as an extinguishment of debt and the Company recognized a loss from early extinguishment of debt totaling approximately $31.4 million consisting of the difference between the value of the U.S. Treasuries and the principal balance of the mortgage loan totaling approximately $28.2 million and the write-off of unamortized deferred financing costs totaling approximately $3.2 million.

On August 1, 2006, the Company used available cash to repay the construction financing and permanent financing totaling approximately $34.0 million and $49.7 million, respectively, collateralized by the Capital Gallery property in Washington, D.C. The Company recognized a loss from early extinguishment of debt totaling approximately $0.2 million, consisting of prepayment fees and the write-off of unamortized deferred financing costs. The construction financing bore interest at a variable rate equal to LIBOR plus 1.65% per annum and was scheduled to mature in February 2008. The permanent financing bore interest at a fixed rate equal to 8.24% per annum and was scheduled to mature on August 15, 2006.

On September 1, 2006, the Company used available cash to repay the mortgage loan collateralized by its Montvale Center property located in Gaithersburg, Maryland totaling approximately $6.6 million. There was no prepayment penalty associated with the repayment. The mortgage loan bore interest at a fixed rate of 8.59% per annum and was scheduled to mature on December 1, 2006.

On October 2, 2006, the Company used available cash to repay the mortgage loan collateralized by its Embarcadero Center Three property located in San Francisco, California totaling approximately $133.4 million. There was no prepayment penalty associated with the repayment. The mortgage loan bore interest at a fixed rate of 6.40% per annum and was scheduled to mature on January 1, 2007.

On November 21, 2006, the Company obtained construction financing totaling $200.0 million collateralized by its South of Market development project located in Reston, Virginia. South of Market is a Class A office project consisting of three buildings aggregating approximately 652,000 net rentable square feet. The construction financing bears interest at a variable rate equal to LIBOR plus 1.25% per annum and matures in November 2009 with two one-year extension options.

During 2005, the Company entered into forward-starting interest rate swap contracts to lock the 10-year treasury rate and 10-year swap spread in contemplation of obtaining long-term fixed-rate financing to refinance existing debt that is expiring or freely prepayable prior to February 2007. Based on swap spreads at each trade date, the swaps fix the 10-year treasury rate for a financing in February 2007 at a weighted average of 4.34% per annum on notional amounts aggregating $500.0 million. The swaps were to go into effect in February 2007 and expire in February 2017. The Company entered into the interest rate swap contracts designated and qualifying as a cash flow hedges to reduce its exposure to the variability in future cash flows attributable to changes in the Treasury rate in contemplation of obtaining ten-year fixed-rate financing in early 2007. SFAS No. 133, “Accounting for Derivative Instruments and Hedging Activities” (“SFAS No. 133”), as amended and interpreted, establishes accounting and reporting standards for derivative instruments. The Company has formally documented all of its relationships between hedging instruments and hedged items, as well as its risk-management objective and strategy for undertaking various hedge transactions. The Company also assesses and documents, both at the hedging instrument’s inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows associated with the hedged

 

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items. All components of the forward-starting interest rate swap contracts were included in the assessment of hedge effectiveness. On December 19, 2006, the Company entered into an interest rate lock agreement with a lender for a fixed interest rate of 5.57% per annum on a ten-year mortgage financing totaling $750.0 million to be collateralized by the Company’s 599 Lexington Avenue property in New York City. On February 12, 2007, the Company closed on the mortgage financing (See Note 23). In conjunction with the interest rate lock agreement, the Company terminated its forward-starting interest rate swap contracts and received approximately $10.9 million, which amount will reduce the Company’s interest expense over the ten-year term of the financing, resulting in an effective interest rate of 5.38% per annum. The Company has recorded the changes in fair value of the swap contracts related to the effective portion of the interest rate contracts totaling approximately $10.9 million in Accumulated Other Comprehensive Income (Loss) within the Company’s Consolidated Balance Sheets. The Company expects that within the next twelve months it will reclassify into earnings approximately $1.0 million of the amounts recorded within Accumulated Other Comprehensive Income (Loss) relating to the forward-starting interest rate swap contracts.

Five mortgage loans totaling approximately $300.7 million at December 31, 2006 and four mortgage loans totaling approximately $250.6 million at December 31, 2005 have been accounted for at their fair values on the date the mortgage loans were assumed. The impact of using this accounting method decreased interest expense by $3.7 million, $3.2 million and $2.7 million for the years ended December 31, 2006, 2005 and 2004, respectively. The cumulative liability related to these accounting methods was $20.1 million and $20.8 million at December 31, 2006 and 2005, respectively, and is included in mortgage notes payable.

Combined aggregate principal payments of mortgage notes payable at December 31, 2006 are as follows:

 

     (in thousands)

2007

   $ 41,492

2008

     1,268,672

2009

     191,982

2010

     351,844

2011

     540,384

Thereafter

     264,992

 

7. Unsecured Senior Notes

The following summarizes the unsecured senior notes outstanding as of December 31, 2006 (dollars in thousands):

 

     Coupon/
Stated Rate
    Effective
Rate (1)
    Principal
Amount
    Maturity
Date (2)

10 Year Unsecured Senior Notes

   6.250 %   6.296 %   $ 750,000     01/15/13

10 Year Unsecured Senior Notes

   6.250 %   6.280 %     175,000     01/15/13

12 Year Unsecured Senior Notes

   5.625 %   5.636 %     300,000     04/15/15

12 Year Unsecured Senior Notes

   5.000 %   5.075 %     250,000     06/01/15
              

Total principal

         1,475,000    

Net discount

         (3,525 )  
              

Total

       $ 1,471,475    
              

(1) Yield on issuance date including the effects of discounts on the notes.
(2) No principal amounts are due prior to maturity.

 

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The indenture relating to the unsecured senior notes contains certain financial restrictions and requirements, including (1) a leverage ratio not to exceed 60%, (2) a secured debt leverage ratio not to exceed 50%, (3) an interest coverage ratio of greater than 1.50, and (4) an unencumbered asset value of not less than 150% of unsecured debt. At December 31, 2006 and 2005, the Company was in compliance with each of these financial restrictions and requirements.

 

8. Unsecured Exchangeable Senior Notes

On April 6, 2006, the Company completed a public offering of $400 million in aggregate principal amount of its 3.75% exchangeable senior notes due 2036. On May 2, 2006, the Company issued an additional $50 million aggregate principal amount of the notes as a result of the exercise by the underwriter of its over-allotment option. The notes mature on May 15, 2036, unless earlier repurchased, exchanged or redeemed.

Upon the occurrence of specified events, holders of the notes may exchange their notes prior to the close of business on the scheduled trading day immediately preceding May 18, 2013 into cash and, at the Company’s option, shares of Boston Properties, Inc.’s common stock at an exchange rate of 9.3900 shares per $1,000 principal amount of notes (or an exchange price of approximately $106.50 per share of common stock). The initial exchange rate of 8.9461 shares per $1,000 principal amount of notes and the initial exchange price of approximately $111.78 per share of Boston Properties, Inc.’s common stock were adjusted effective as of December 29, 2006 in connection with the special distribution declared on December 15, 2006. On and after May 18, 2013, the notes will be exchangeable at any time prior to the close of business on the scheduled trading day immediately preceding the maturity date at the option of the holder at the applicable exchange rate. The exchange rate is subject to adjustment in certain circumstances.

Prior to May 18, 2013, the Company may not redeem the notes except to preserve Boston Properties, Inc.’s status as a REIT. On or after May 18, 2013, the Company may redeem all or a portion of the notes for cash at a redemption price equal to 100% of the principal amount plus accrued and unpaid interest. The Company must make at least 12 semi-annual interest payments (including interest payments on November 15, 2006 and May 15, 2013) before redeeming any notes at the option of the Company. Note holders may require the Company to repurchase all or a portion of the notes on May 18, 2013 and May 15 of 2016, 2021, 2026 and 2031 at a purchase price equal to 100% of the principal amount plus accrued and unpaid interest up to, but excluding, the repurchase date. The Company will pay cash for all notes so repurchased.

If the Company undergoes a “fundamental change,” note holders will have the option to require the Company to purchase all or any portion of the notes at a purchase price equal to 100% of the principal amount of the notes to be purchased plus any accrued and unpaid interest to, but excluding, the fundamental change purchase date. The Company will pay cash for all notes so purchased. In addition, if a fundamental change occurs prior to May 18, 2013, the Company will increase the exchange rate for a holder who elects to exchange its notes in connection with such a fundamental change under certain circumstances. The notes are senior unsecured obligations of the Company and will rank equally in right of payment to all existing and future senior unsecured indebtedness and senior to any future subordinated indebtedness of the Company. The notes will effectively rank junior in right of payment to all existing and future secured indebtedness of the Company. The notes will be structurally subordinated to all liabilities of the subsidiaries of the Company.

 

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9. Unsecured Line of Credit

On August 3, 2006, the Company modified its $605.0 million unsecured revolving credit facility (the “Unsecured Line of Credit”) by extending the maturity date from October 30, 2007 to August 3, 2010, with a provision for a one-year extension at the option of the Company, subject to certain conditions, and by reducing the per annum variable interest rate on outstanding balances from Eurodollar plus 0.65% to Eurodollar plus 0.55% per annum. The Unsecured Line of Credit is a recourse obligation of the Company. Under the Unsecured Line of Credit, a facility fee equal to 15 basis points per annum is payable in quarterly installments. The interest rate and facility fee are subject to adjustment in the event of a change in the Company’s unsecured debt ratings. The Unsecured Line of Credit involves a syndicate of lenders. The Unsecured Line of Credit contains a competitive bid option that allows banks that are part of the lender consortium to bid to make loan advances to the Company at a negotiated LIBOR-based rate. The Company had an outstanding balance on the Unsecured Line of Credit of $225.0 million and $283.0 million at December 31, 2006 and 2005, respectively, of which $225.0 million at December 31, 2006 and 2005 was collateralized by the Company’s 599 Lexington Avenue property and therefore is included in Mortgage Notes Payable in the Company’s Consolidated Balance Sheets. On February 12, 2007, the Company repaid the $225.0 million draw that was collateralized by the Company’s 599 Lexington Avenue (See Note 23). The weighted-average balance outstanding was approximately $240.4 million and $107.3 million (including the $225.0 million collateralized by 599 Lexington Avenue) during the year ended December 31, 2006 and 2005, respectively. The weighted-average interest rate on amounts outstanding was approximately 5.38% and 4.32% during the year ended December 31, 2006 and 2005, respectively.

The terms of the Unsecured Line of Credit require that the Company maintain a number of customary financial and other covenants on an ongoing basis, including: (1) a leverage ratio not to exceed 60%, however, the leverage ratio may increase to no greater than 65% provided that it is reduced back to 60% within 180 days, (2) a secured debt leverage ratio not to exceed 55%, (3) a fixed charge coverage ratio of at least 1.40, (4) an unsecured debt leverage ratio not to exceed 60%, however, the unsecured debt leverage ratio may increase to no greater than 65% provided that it is reduced back to 60% within 180 days, (5) a minimum net worth requirement, (6) an unsecured debt interest coverage ratio of at least 1.75 and (7) limitations on permitted investments, development, partially owned entities, business outside of commercial real estate and commercial non-office properties. At December 31, 2006 and 2005, the Company was in compliance with each of these financial and other covenant requirements.

 

10. Commitments and Contingencies

General

In the normal course of business, the Company guarantees its performance of services or indemnifies third parties against its negligence.

The Company has letter of credit and performance obligations of approximately $25.8 million related to lender and development requirements.

The Company and its third-party joint venture partners have guaranteed the seller financing totaling $15.5 million related to the acquisition of land by WP Project Developer LLC, the Land and Infrastructure Entity of the Wisconsin Place joint venture entities. The Company and its third-party joint venture partners in the New York Land Venture have each agreed to guarantee approximately $11.8 million of the related mortgage loan.

Certain of the Company’s joint venture agreements include provisions whereby, at certain specified times, each partner has the right to initiate a purchase or sale of its interest in the joint ventures. Under these provisions, the Company is not compelled to purchase the interest of its outside joint venture partners.

 

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Concentrations of Credit Risk

Management of the Company performs ongoing credit evaluations of tenants and may require tenants to provide some form of credit support such as corporate guarantees and/or other financial guarantees. Although the Company’s properties are geographically diverse and the tenants operate in a variety of industries, to the extent the Company has a significant concentration of rental revenue from any single tenant, the inability of that tenant to make its lease payments could have an adverse effect on the Company.

Some potential losses are not covered by insurance.

The Company carries insurance coverage on its properties of types and in amounts and with deductibles that it believes are in line with coverage customarily obtained by owners of similar properties. In response to the uncertainty in the insurance market following the terrorist attacks of September 11, 2001, the Federal Terrorism Risk Insurance Act, or TRIA, was enacted in November 2002 to require regulated insurers to make available coverage for certified acts of terrorism (as defined by the statute) through December 31, 2004, which date was extended to December 31, 2005 by the United States Department of Treasury on June 18, 2004 and which date was further extended to December 31, 2007 by the Terrorism Risk Insurance Extension Act of 2005 (the “TRIA Extension Act”). TRIA expires on December 31, 2007, and the Company cannot currently anticipate whether it will be extended. Effective as of March 1, 2007, the Company’s property insurance program per occurrence limits were increased from $800 million to $900 million including coverage for “certified” acts of terrorism by TRIA and coverage for “non-certified” acts of terrorism by TRIA up to $500 million per occurrence, and an additional $400 million of coverage for “non-certified” acts of terrorism by TRIA on a per occurrence and annual aggregate basis. The Company also carries nuclear, biological, chemical and radiological terrorism insurance coverage (“NBCR Coverage”) for “certified” acts of terrorism as defined by TRIA, which is provided by IXP, LLC as a direct insurer. Effective as of March 1, 2007, the Company extended the NBCR Coverage to March 1, 2008, excluding the Company’s Value-Added Fund properties. Effective as of March 1, 2007, the per occurrence limit for NBCR Coverage was increased from $800 million to $900 million. Under TRIA, after the payment of the required deductible and coinsurance the NBCR Coverage is backstopped by the Federal Government if the aggregate industry insured losses resulting from a certified act of terrorism exceed a “program trigger.” Under the TRIA Extension Act (a) the program trigger is $5 million through March 31, 2006, $50 million from April 1, 2006 through December 31, 2006 and $100 million from January 1, 2007 through December 31, 2007 and (b) the coinsurance is 10% through December 31, 2006 and 15% through December 31, 2007. The Company may elect to terminate the NBCR Coverage if there is a change in its portfolio or for any other reason. In the event TRIA is not extended beyond December 31, 2007 (i) the NBCR coverage provided by IXP will terminate and (ii) the Company will have some gaps in its coverage for acts of terrorism that would have constituted both “certified” and “non-certified” acts of terrorism had TRIA not expired and the Company may obtain the right to replace a portion of such coverage. The Company intends to continue to monitor the scope, nature and cost of available terrorism insurance and maintain insurance in amounts and on terms that are commercially reasonable.

The Company also currently carries earthquake insurance on its properties located in areas known to be subject to earthquakes in an amount and subject to self-insurance that the Company believes are commercially reasonable. In addition, this insurance is subject to a deductible in the amount of 5% of the value of the affected property. Specifically, the Company currently carries earthquake insurance which covers its San Francisco region with a $120 million per occurrence limit and a $120 million annual aggregate limit, $20 million of which is provided by IXP, LLC, as a direct insurer. The amount of the Company’s earthquake insurance coverage may not be sufficient to cover losses from earthquakes. The Company may discontinue earthquake insurance on some or all of its properties in the future if the premiums exceed the Company’s estimation of the value of the coverage.

 

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In January 2002, the Company formed a wholly-owned taxable REIT subsidiary, IXP, Inc., to act as a captive insurance company and be one of the elements of the Company’s overall insurance program. On September 27, 2006, IXP, Inc. was merged into IXP, LLC, a wholly owned subsidiary, and all insurance policies issued by IXP, Inc. were cancelled and reissued by IXP, LLC. The term “IXP” refers to IXP, Inc. for the period prior to September 27, 2006 and to IXP, LLC for the period on and subsequent to September 27, 2006. IXP acts as a direct insurer with respect to a portion of the Company’s earthquake insurance coverage for its Greater San Francisco properties and the Company’s NBCR Coverage for “certified acts of terrorism” under TRIA. Insofar as the Company owns IXP, it is responsible for its liquidity and capital resources, and the accounts of IXP are part of the Company’s consolidated financial statements. In particular, if a loss occurs which is covered by the Company’s NBCR Coverage but is less than the applicable program trigger under TRIA, IXP would be responsible for the full amount of the loss without any backstop by the Federal Government. If the Company experiences a loss and IXP is required to pay under its insurance policy, the Company would ultimately record the loss to the extent of IXP’s required payment. Therefore, insurance coverage provided by IXP should not be considered as the equivalent of third-party insurance, but rather as a modified form of self-insurance.

The Company continues to monitor the state of the insurance market in general, and the scope and costs of coverage for acts of terrorism in particular, but the Company cannot anticipate what coverage will be available on commercially reasonable terms in future policy years. There are other types of losses, such as from wars or the presence of mold at the Company’s properties, for which the Company cannot obtain insurance at all or at a reasonable cost. With respect to such losses and losses from acts of terrorism, earthquakes or other catastrophic events, if the Company experiences a loss that is uninsured or that exceeds policy limits, the Company could lose the capital invested in the damaged properties, as well as the anticipated future revenues from those properties. Depending on the specific circumstances of each affected property, it is possible that the Company could be liable for mortgage indebtedness or other obligations related to the property. Any such loss could materially and adversely affect the Company’s business and financial condition and results of operations.

Legal Matters

The Company is subject to various legal proceedings and claims that arise in the ordinary course of business. These matters are generally covered by insurance. Management believes that the final outcome of such matters will not have a material adverse effect on the financial position, results of operations or liquidity of the Company.

State and Local Tax Matters

Because the Company is organized and qualifies as a limited partnership, it is generally not subject to federal income taxes, but is subject to certain state and local taxes. In the normal course of business, certain entities through which the Company owns real estate either have undergone, or are currently undergoing, tax audits. Although the Company believes that it has substantial arguments in favor of its positions in the ongoing audits, in some instances there is no controlling precedent or interpretive guidance on the specific point at issue. Collectively, tax deficiency notices received to date from the jurisdictions conducting the ongoing audits have not been material. However, there can be no assurance that future audits will not occur with increased frequency or that the ultimate result of such audits will not have a material adverse effect on the Company’s results of operations.

Environmental Matters

It is the Company’s policy to retain independent environmental consultants to conduct or update Phase I environmental assessments (which generally do not involve invasive techniques such as soil or ground water sampling) and asbestos surveys in connection with the Company’s acquisition of properties. These pre-purchase environmental assessments have not revealed environmental conditions that the Company believes will have a material adverse effect on its business, assets, financial condition, results of operations or liquidity, and the

 

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Company is not otherwise aware of environmental conditions with respect to its properties that the Company believes would have such a material adverse effect. However, from time to time environmental conditions at the Company’s properties have required and may in the future require environmental testing and/or regulatory filings, as well as remedial action.

In February 1999, the Company (through a joint venture) acquired from Exxon Corporation a property in Massachusetts that was formerly used as a petroleum bulk storage and distribution facility and was known by the state regulatory authority to contain soil and groundwater contamination. The Company developed an office park on the property. The Company engaged a specially licensed environmental consultant to oversee the management of contaminated soil and groundwater that was disturbed in the course of construction. Under the property acquisition agreement, Exxon agreed to (1) bear the liability arising from releases or discharges of oil and hazardous substances which occurred at the site prior to the Company’s ownership, (2) continue monitoring and/or remediating such releases and discharges as necessary and appropriate to comply with applicable requirements, and (3) indemnify the Company for certain losses arising from preexisting site conditions. Any indemnity claim may be subject to various defenses, and there can be no assurance that the amounts paid under the indemnity, if any, would be sufficient to cover the liabilities arising from any such releases and discharges.

Environmental investigations at two of the Company’s properties in Massachusetts have identified groundwater contamination migrating from off-site source properties. In both cases the Company engaged a specially licensed environmental consultant to perform the necessary investigations and assessments and to prepare submittals to the state regulatory authority, including Downgradient Property Status Opinions. The environmental consultant concluded that the properties qualify for Downgradient Property Status under the state regulatory program, which eliminates certain deadlines for conducting response actions at a site. The Company also believes that these properties qualify for liability relief under certain statutory amendments regarding upgradient releases. Although the Company believes that the current or former owners of the upgradient source properties may bear responsibility for some or all of the costs of addressing the identified groundwater contamination, the Company will take necessary further response actions (if any are required). Other than periodic testing, no such additional response actions are anticipated at this time.

The Company owns a property in Massachusetts where historic groundwater contamination was identified prior to acquisition. The Company engaged a specially licensed environmental consultant to perform investigations and to prepare necessary submittals to the state regulatory authority. The environmental consultant has concluded that (1) certain identified groundwater contaminants are migrating to the subject property from an off-site source property and (2) certain other detected contaminants are likely related to a historic release on the subject property. The Company has filed a Downgradient Property Status Opinion (described above) with respect to contamination migrating from off-site and a Response Action Outcome (“RAO”) with respect to the identified historic release. The RAO indicates that regulatory closure has been achieved and that no further action is required at this time.

Some of the Company’s properties and certain properties owned by the Company’s affiliates are located in urban, industrial and other previously developed areas where fill or current or historical uses of the areas have caused site contamination. Accordingly, it is sometimes necessary to institute special soil and/or groundwater handling procedures and/or include particular building design features in connection with development, construction and other property operations in order to achieve regulatory closure and/or ensure that contaminated materials are addressed in an appropriate manner. In these situations it is the Company’s practice to investigate the nature and extent of detected contamination and estimate the costs of required response actions and special

 

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handling procedures. The Company then uses this information as part of its decision-making process with respect to the acquisition and/or development of the property. The Company owns a parcel in Massachusetts, formerly used as a quarry/asphalt batching facility, which the Company may develop in the future. Pre-purchase testing indicated that the site contains relatively low levels of certain contaminants. The Company has engaged a specially licensed environmental consultant to monitor environmental conditions at the site and prepare necessary regulatory submittals based on the results of an environmental risk characterization. The Company anticipates that additional response actions necessary to achieve regulatory closure (if any) will be performed prior to or in connection with future development activities. When appropriate, closure documentation will be submitted for public review and comment pursuant to the state regulatory authority’s public information process.

The Company expects that resolution of the environmental matters relating to the above will not have a material impact on its business, assets, financial condition, results of operations or liquidity. However, the Company cannot assure you that it has identified all environmental liabilities at its properties, that all necessary remediation actions have been or will be undertaken at the Company’s properties or that the Company will be indemnified, in full or at all, in the event that such environmental liabilities arise.

Tax Protection Obligations

The Company’s Partnership Agreement provides that, until June 23, 2007, the Company may not sell or otherwise transfer three designated properties (or a property acquired pursuant to the disposition of a designated property in a non-taxable transaction) in a taxable transaction without the prior written consent of Mr. Mortimer B. Zuckerman, Chairman of the Board of Directors of Boston Properties, Inc., and Mr. Edward H. Linde, President and Chief Executive Officer of Boston Properties, Inc. The Company is not required to obtain their consent if each of them does not hold at least 30% of their original interests in the Company, or if those properties are transferred in a non-taxable transaction.

In connection with the acquisition or contribution of 24 properties, the Company entered into similar agreements for the benefit of the selling or contributing parties which specifically state that until specified dates ranging from November 2007 to April 2016, or such time as the contributors do not hold at least a specified percentage of the OP Units owned by such person following the contribution of the properties, the Company will not sell or otherwise transfer the properties in a taxable transaction. If the Company does sell or transfer the properties in a taxable transaction, it would be liable to the contributors for contractual damages.

 

11. Minority Interests in Property Partnerships

The minority interests in property partnerships consist of the outside equity interests in ventures that are consolidated with the financial results of the Company because the Company exercises control over the entities that own the properties. The equity interests in these ventures that are not owned by the Company, totaling approximately $12.5 million and $18.0 million at December 31, 2006 and December 31, 2005, respectively, are included in Minority Interests in Property Partnerships on the accompanying Consolidated Balance Sheets.

On May 31, 2006, the Company redeemed the outside members’ equity interests in the limited liability company that owns Citigroup Center for an aggregate redemption price of $100 million, with $50 million paid at closing and $25 million to be paid on each of the first and second anniversaries of the closing or, if earlier, in connection with a sale of Citigroup Center. In addition, the parties terminated the existing tax protection agreement. The redemption was accounted for using the purchase method in accordance with Financial Accounting Standards Board’s (“FASB”) Statements of Financial Accounting Standards (“SFAS”) No. 141 “Business Combinations” (“SFAS No. 141”). The difference between the aggregate book value of the outside members’ equity interests totaling approximately $14.9 million and the purchase price increased the recorded value of the property’s net assets. The unpaid redemption price was recorded at its fair value in Other Liabilities in the Company’s Consolidated Balance Sheets and totaled $47.3 million at December 31, 2006.

 

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12. Redeemable Partnership Units

The following table reflects the activity for redeemable partnership units for the years ended December 31, 2006, 2005 and 2004:

 

Balance at December 31, 2003

   $ 1,419,360  

Contributions

     8,120  

Net income

     75,852  

Distributions

     (70,209 )

Conversion of redeemable partnership units

     (56,843 )

Unearned compensation

     (6,379 )

Adjustments to reflect redeemable partnership units at redemption value

     381,324  
        

Balance at December 31, 2004

     1,751,225  

Contributions

     24,670  

Net income

     113,738  

Distributions

     (137,565 )

Conversion of redeemable partnership units

     (24,499 )

Unearned compensation

     (6,282 )

Adjustments to reflect redeemable partnership units at redemption value

     251,753  
        

Balance at December 31, 2005

     1,973,040  

Contributions

     10,098  

Net income

     186,408  

Distributions

     (194,277 )

Conversion of redeemable partnership units

     (87,347 )

Unearned compensation

     (5,119 )

Adjustments to reflect redeemable partnership units at redemption value

     756,996  
        

Balance at December 31, 2006

   $ 2,639,799  
        

Operating Partnership Units

Pursuant to the Company’s Partnership Agreement, certain limited partners in the Company have the right to redeem all or any portion of their interest for cash from the Company. However, Boston Properties, Inc. may elect to acquire the interest by issuing common stock in exchange for their interest. The amount of cash to be paid to the limited partner if the redemption right is exercised and the cash option is elected is based on the trading price of Boston Properties, Inc.’s common stock at that time. Due to the redemption option existing outside the control of the Company, such limited partners’ units are not included in Partners’ Capital. The value of the OP Units (not owned by Boston Properties, Inc. and including LTIP Units assuming that all conditions have been met for the conversion thereof) had such units been redeemed at December 31, 2006 was approximately $2.4 billion based on the closing price of Boston Properties, Inc.’s common stock of $111.88 per share.

During the years ended December 31, 2006 and 2005, 3,161,265 and 924,976 OP Units, respectively, were presented by the holders for redemption and were redeemed by Boston Properties, Inc. in exchange for an equal number of shares of Common Stock. The aggregate book value of the OP Units that were redeemed, as measured for each OP Unit on the date of its redemption, was approximately $87.3 million and $22.7 million during the years ended December 31, 2006 and 2005, respectively.

 

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

Preferred Units

The Preferred Units at December 31, 2006 consist solely of 1,719,230 Series Two Preferred Units, which bear a preferred distribution equal to the greater of (1) the distribution which would have been paid in respect of the Series Two Preferred Unit had such Series Two Preferred Unit been converted into an OP Unit (including both regular and special distributions) or (2) an increasing rate, ranging from 5.00% to 7.00% per annum (7.00% for the years ended December 31, 2006, 2005 and 2004) on a liquidation preference of $50.00 per unit, and are convertible into OP Units at a rate of $38.10 per Preferred Unit (1.312336 OP Units for each Preferred Unit). Distributions to holders of Preferred Units are recognized on a straight-line basis that approximates the effective interest method.

During the years ended December 31, 2006 and 2005, 1,982,105 and 381,000 Series Two Preferred Units of the Company, respectively, were converted by the holders into 2,601,132 and 500,000 OP Units, respectively. In addition, the Company paid the accrued preferred distributions due to the holders of Preferred Units that were converted.

Due to the redemption option and the conversion option existing outside the control of the Company, such Preferred Units are not included in Partners’ Capital and are reflected in the consolidated balance sheets at an amount equivalent to the value of such units had such units been redeemed at December 31, 2006 and 2005. The value of the Series Two Preferred Units had such units been redeemed at December 31, 2006 was approximately $252.4 million based on the closing price of Boston Properties, Inc.’s common stock of $111.88 per share. Included in preferred distributions and allocation of undistributed earnings in the Consolidated Statements of Operations is accretion of approximately $1.2 million, $1.7 million and $2.0 million for the years ended December 31, 2006, 2005 and 2004, respectively, which represents the accretion of Preferred Units from the value at issuance to the liquidation value.

On December 15, 2006, Boston Properties, Inc., as general partner of the Company, declared a special cash distribution on the OP Units and LTIP Units in the amount of $5.40 per unit which was paid on January 30, 2007 to unitholders of record as of the close of business on December 30, 2006. The special cash distribution was in addition to the regular quarterly distributions of $0.68, $0.68, $0.68 and $0.68 per unit which were declared by Boston Properties, Inc., as general partner of the Company, during the year ended December 31, 2006. Holders of Series Two Preferred Units will participate in the $5.40 per unit special cash distribution on an as-converted basis in connection with their regular May 2007 distribution payment as provided for in the Company’s partnership agreement. At December 31, 2006, the Company accrued approximately $12.2 million related to the $5.40 per unit special cash distribution payable to holders of the Series Two Preferred Units and allocated earnings to the Series Two Preferred Units of approximately $12.2 million, which amount has been reflected in Preferred Distributions and Allocation of Undistributed Earnings within the Consolidated Statements of Operations for the year ended December 31, 2006.

On July 21, 2005, Boston Properties, Inc., as general partner of the Company, declared a special cash distribution on the OP Units and LTIP Units in the amount of $2.50 per unit which was paid on October 31, 2005 to unitholders of record as of the close of business on September 30, 2005. The special cash distribution was in addition to the regular quarterly distributions of $0.65, $0.68, $0.68 and $0.68 per unit which were declared by Boston Properties, Inc., as general partner of the Company, during the year ended December 31, 2005. Holders of Series Two Preferred Units participated in the $2.50 per unit special cash distribution on an as-converted basis in connection with their regular February 2006 distribution payment as provided for in the Company’s partnership agreement. At December 31, 2005, the Company accrued approximately $12.1 million related to the $2.50 per unit special cash distribution payable to holders of the Series Two Preferred Units and allocated earnings to the Series Two Preferred Units of approximately $12.1 million, which amount has been reflected in Preferred Distributions and Allocation of Undistributed Earnings within the Consolidated Statements of Operations for the year ended December 31, 2005.

 

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

13. Partners’ Capital

The following table presents the changes in the issued and outstanding partners’ capital units since January 1, 2004:

 

     General
Partner
Units
   Limited
Partner Units
   Total
Partners’
Capital Units

Outstanding at January 1, 2004

   1,205,961    97,024,216    98,230,177

Units issued to Boston Properties, Inc. related to Common Stock issued for the completion of a public offering

   53,964    5,646,036    5,700,000

Units issued to Boston Properties, Inc. related to Common Stock issued for the conversion of Preferred Units

   16,379    1,713,705    1,730,084

Units issued to Boston Properties, Inc. related to Common Stock issued under the Employee Stock Purchase Plan

   106    11,019    11,125

Units issued to Boston Properties, Inc. related to Common Stock issued under the Restricted Stock Award Plan

   224    23,433    23,657

Units issued to Boston Properties, Inc. related to Common Stock issued for stock option exercises

   36,119    3,778,955    3,815,074

Units issued to Boston Properties, Inc. related to Common Stock issued in exchange for OP Units

   7,672    802,696    810,368
              

Outstanding at December 31, 2004

   1,320,425    109,000,060    110,320,485

Units issued to Boston Properties, Inc. related to Common Stock issued for the conversion of Preferred Units

   5,082    494,918    500,000

Units issued to Boston Properties, Inc. related to Common Stock issued under the Employee Stock Purchase Plan

   76    7,416    7,492

Units issued to Boston Properties, Inc. related to Common Stock issued under the Stock Option and Incentive Plan

   13,105    1,276,204    1,289,309

Units issued to Boston Properties, Inc. related to Common Stock issued in exchange for OP Units

   4,320    420,656    424,976
              

Outstanding at December 31, 2005

   1,343,008    111,199,254    112,542,262

Units issued to Boston Properties, Inc. related to Common Stock issued for the conversion of Preferred Units

   23,810    2,577,322    2,601,132

Units issued to Boston Properties, Inc. related to Common Stock issued under the Employee Stock Purchase Plan

   70    7,563    7,633

Units issued to Boston Properties, Inc. related to Common Stock issued under the Stock Option and Incentive Plan

   16,407    1,775,975    1,792,382

Units issued to Boston Properties, Inc. related to Common Stock issued in exchange for OP Units

   5,127    555,006    560,133
              

Outstanding at December 31, 2006

   1,388,422    116,115,120    117,503,542
              

 

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

14. Future Minimum Rents

The Properties are leased to tenants under net operating leases with initial term expiration dates ranging from 2007 to 2029. The future minimum lease payments to be received (excluding operating expense reimbursements) by the Company as of December 31, 2006, under non-cancelable operating leases (including leases for properties under development and excluding leases at 5 Times Square, which was categorized as “Held for Sale” at December 31, 2006 and was sold on February 15, 2007), which expire on various dates through 2029, are as follows:

 

Years Ending December 31,

   (in thousands)

2007

   $ 1,007,355

2008

     985,194

2009

     923,458

2010

     849,336

2011

     774,799

Thereafter

     3,869,223

No single tenant represented more than 10.0% of the Company’s total rental revenue for the years ended December 31, 2006, 2005 and 2004.

 

15. Segment Reporting

The Company’s segments are based on the Company’s method of internal reporting which classifies its operations by both geographic area and property type. The Company’s segments by geographic area are Greater Boston, Greater Washington, D.C., Midtown Manhattan, Greater San Francisco and New Jersey. Segments by property type include: Class A Office, Office/Technical and Hotels.

Asset information by segment is not reported because the Company does not use this measure to assess performance. Therefore, depreciation and amortization expense is not allocated among segments. Interest and other income, development and management services, general and administrative expenses, interest expense, depreciation and amortization expense, minority interests in property partnerships, income from unconsolidated joint ventures, gains on sales of real estate and other assets, income from discontinued operations, gains on sales of real estate from discontinued operations and cumulative effect of a change in accounting principle and losses from early extinguishments of debt are not included in Net Operating Income as the internal reporting addresses these items on a corporate level.

Net Operating Income is not a measure of operating results or cash flows from operating activities as measured by accounting principles generally accepted in the United States of America, and it is not indicative of cash available to fund cash needs and should not be considered an alternative to cash flows as a measure of liquidity. All companies may not calculate Net Operating Income in the same manner. The Company considers Net Operating Income to be an appropriate supplemental measure to net income because it helps both investors and management to understand the core operations of the Company’s properties.

 

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

Information by geographic area and property type (dollars in thousands):

For the year ended December 31, 2006:

 

    Greater
Boston
    Greater
Washington,
D.C.
    Midtown
Manhattan
    Greater
San
Francisco
    New
Jersey
    Total  

Rental Revenue:

           

Class A Office

  $ 309,760     $ 223,154     $ 515,713     $ 188,194     $ 64,781     $ 1,301,602  

Office/Technical

    26,973       15,459       —         —         —         42,432  

Hotels

    76,990       —         —         —         —         76,990  
                                               

Total

    413,723       238,613       515,713       188,194       64,781       1,421,024  

% of Grand Totals

    29.12 %     16.79 %     36.29 %     13.24 %     4.56 %     100.0 %

Rental Expenses:

           

Class A Office

    118,938       59,556       155,015       71,830       28,228       433,567  

Office/Technical

    6,446       1,801       —         —         —         8,247  

Hotels

    55,538       —         —         —         —         55,538  
                                               

Total

    180,922       61,357       155,015       71,830       28,228       497,352  

% of Grand Totals

    36.37 %     12.34 %     31.17 %     14.44 %     5.68 %     100.0 %
                                               

Net operating income

  $ 232,801     $ 177,256     $ 360,698     $ 116,364     $ 36,553     $ 923,672  
                                               

% of Grand Totals

    25.20 %     19.19 %     39.05 %     12.60 %     3.96 %     100.0 %

For the year ended December 31, 2005:

 

    Greater
Boston
    Greater
Washington,
D.C.
    Midtown
Manhattan
    Greater
San
Francisco
    New
Jersey
    Total  

Rental Revenue:

           

Class A Office

  $ 296,003     $ 223,085     $ 531,481     $ 198,404     $ 66,502     $ 1,315,475  

Office/Technical

    8,527       15,031       —         —         —         23,558  

Hotels

    69,277       —         —         —         —         69,277  
                                               

Total

    373,807       238,116       531,481       198,404       66,502       1,408,310  

% of Grand Totals

    26.54 %     16.91 %     37.74 %     14.09 %     4.72 %     100.00 %

Rental Expenses:

           

Class A Office

    108,173       59,100       165,500       73,105       27,448       433,326  

Office/Technical

    1,938       3,071       —         —         —         5,009  

Hotels

    51,689       —         —         —         —         51,689  
                                               

Total

    161,800       62,171       165,500       73,105       27,448       490,024  

% of Grand Totals

    33.02 %     12.69 %     33.77 %     14.92 %     5.60 %     100.00 %
                                               

Net operating income

  $ 212,007     $ 175,945     $ 365,981     $ 125,299     $ 39,054     $ 918,286  
                                               

% of Grand Totals

    23.09 %     19.16 %     39.85 %     13.65 %     4.25 %     100.00 %

 

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

For the year ended December 31, 2004:

 

    Greater
Boston
    Greater
Washington,
D.C.
    Midtown
Manhattan
    Greater
San
Francisco
    New
Jersey
    Total  

Rental Revenue:

           

Class A Office

  $ 286,568     $ 240,644     $ 478,652     $ 191,422     $ 69,051     $ 1,266,337  

Office/Technical

    8,525       14,144       —         134       —         22,803  

Hotels

    66,427       —         —         —         —         66,427  
                                               

Total

    361,520       254,788       478,652       191,556       69,051       1,355,567  

% of Grand Totals

    26.67 %     18.80 %     35.31 %     14.13 %     5.09 %     100.00 %

Rental Expenses:

           

Class A Office

    98,480       66,505       147,127       71,616       27,587       411,315  

Office/Technical

    1,997       2,979       —         36       —         5,012  

Hotels

    49,442       —         —         —         —         49,442  
                                               

Total

    149,919       69,484       147,127       71,652       27,587       465,769  

% of Grand Totals

    32.19 %     14.92 %     31.59 %     15.38 %     5.92 %     100.00 %
                                               

Net operating income

  $ 211,601     $ 185,304     $ 331,525     $ 119,904     $ 41,464     $ 889,798  
                                               

% of Grand Totals

    23.78 %     20.83 %     37.25 %     13.48 %     4.66 %     100.00 %

The following is a reconciliation of net operating income to net income available to common unitholders (in thousands):

 

     Years ended December 31,
     2006    2005    2004

Net operating income

   $ 923,672    $ 918,286    $ 889,798

Add:

        

Development and management services

     19,825      17,310      20,440

Interest and other

     36,737      12,015      10,339

Minority interests in property partnerships

     2,013      6,017      4,685

Income from unconsolidated joint ventures

     24,507      4,829      3,380

Gains on sales of real estate and other assets

     727,131      188,546      9,822

Gains on sales of real estate from discontinued operations

     —        57,969      33,427

Income from discontinued operations

     —        2,279      4,030

Less:

        

General and administrative

     59,375      55,471      53,636

Interest expense

     298,260      308,091      306,170

Depreciation and amortization

     272,608      264,182      247,924

Losses from early extinguishments of debt

     32,143      12,896      6,258

Cumulative effect of a change in accounting principle

     —        5,043      —  

Preferred distributions and allocation of undistributed earnings

     22,814      26,780      17,133
                    

Net income available to common unitholders

   $ 1,048,685    $ 534,788    $ 344,800
                    

 

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

16. Earnings Per Common Unit

Earnings per common unit has been computed pursuant to the provisions of SFAS No. 128. The following table provides a reconciliation of both the net income and the number of common units used in the computation of basic earnings per common unit, which is calculated by dividing net income available to common unitholders by the weighted-average number of common units outstanding during the period. During 2004, the Company adopted EITF 03-6 “Participating Securities and the Two-Class Method under FASB 128” (“EITF 03-6”), which provides further guidance on the definition of participating securities. Pursuant to EITF 03-6, the Company’s Series Two Preferred Units, which are reflected as Redeemable Partnership Units in the Company’s Consolidated Balance Sheets, are considered participating securities and are included in the computation of basic and diluted earnings per common unit of the Company if the effect of applying the if-converted method is dilutive. The terms of the Series Two Preferred Units enable the holders to obtain OP Units of the Company. Accordingly, for the reporting periods in which the Company’s net income is in excess of distributions paid on the OP Units, LTIP Units and Series Two Preferred Units, such income is allocated to the OP Units, LTIP Units and Series Two Preferred Units in proportion to their respective interests and the impact is included in the Company’s consolidated basic and diluted earnings per common unit computation. There were no amounts required to be allocated to the Series Two Preferred Units for the years ended December 31, 2006 and 2005. For the year ended December 31, 2004, approximately $70,000 was allocated to the Series Two Preferred Units in excess of distributions paid during the reporting period and is included in the Company’s computation of basic and diluted earnings per common unit. Other potentially dilutive common units, and the related impact on earnings, are considered when calculating diluted earnings per common unit. Included in the number of units (the denominator) below are approximately 21,202,000, 21,607,000 and 21,855,000 redeemable common units for the years ended December 31, 2006, 2005 and 2004, respectively.

 

    

For the year ended December 31, 2006

(in thousands, except for per unit amounts)

 
     Income
(Numerator)
   Units
(Denominator)
   Per Unit
Amount
 
        

Basic Earnings:

        

Net income available to common unitholders

   $ 1,048,685    135,923    $ 7.72  

Effect of Dilutive Securities:

        

Stock Based Compensation

     —      2,356      (0.14 )

Diluted Earnings:

        
                    

Net income

   $ 1,048,685    138,279    $ 7.58  
                    

 

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

    

For the year ended December 31, 2005

(in thousands, except for per unit amounts)

 
     Income
(Numerator)
    Units
(Denominator)
   Per Unit
Amount
 
        

Basic Earnings:

       

Income available to common unitholders before discontinued operations and cumulative effect of a change in accounting principle

   $ 479,583     132,881    $ 3.61  

Discontinued operations

     60,248     —        0.45  

Cumulative effect of a change in accounting principle

     (5,043 )   —        (0.04 )
                     

Net income available to common unitholders

     534,788     132,881      4.02  

Effect of Dilutive Securities:

       

Stock Based Compensation

     —       2,285      (0.06 )

Diluted Earnings:

       
                     

Net income

   $ 534,788     135,166    $ 3.96  
                     
    

For the year ended December 31, 2004

(in thousands, except for per unit amounts)

 
     Income
(Numerator)
    Units
(Denominator)
   Per Unit
Amount
 
        

Basic Earnings:

       

Income available to common unitholders before discontinued operations

   $ 307,343     128,313    $ 2.40  

Discontinued operations

     37,457     —        0.29  
                     

Net income available to common unitholders

     344,800     128,313      2.69  

Effect of Dilutive Securities:

       

Stock Based Compensation

     —       2,304      (0.05 )

Diluted Earnings:

       
                     

Net income

   $ 344,800     130,617    $ 2.64  
                     

 

17. Employee Benefit Plan

Effective January 1, 1985, the predecessor of the Company adopted a 401(k) Savings Plan (the “Plan”) for its employees. Under the Plan, as amended, employees, as defined, are eligible to participate in the Plan after they have completed three months of service. Upon formation, the Company adopted the Plan and the terms of the Plan.

Effective January 1, 2000, the Company amended the Plan by increasing the Company’s matching contribution to 200% of the first 3% from 200% of the first 2% of participant’s eligible earnings contributed (utilizing earnings that are not in excess of an amount established by the IRS ($220,000 in 2006 and $225,000 in 2007), indexed for inflation) and by eliminating the vesting requirement. The Company’s aggregate matching contribution for the years ended December 31, 2006, 2005 and 2004 was $2.2 million, $2.1 million and $2.2 million, respectively.

Effective January 1, 2001, the Company amended the Plan to provide a supplemental retirement contribution to employees who have at least ten years of service on January 1, 2001, and who are 40 years of age or older as of January 1, 2001. The maximum supplemental retirement contribution will not exceed the annual limit on contributions established by the Internal Revenue Service. The Company will record an annual

 

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

supplemental retirement credit for the benefit of each participant. The Company’s supplemental retirement contribution and credit for the years ended December 31, 2006, 2005 and 2004 was $191,000, $189,000 and $167,000, respectively.

The Company also maintains a deferred compensation plan that is designed to allow officers of the Company to defer a portion of their current income on a pre-tax basis and receive a tax-deferred return on these deferrals. The Company’s obligation under the plan is that of an unsecured promise to pay the deferred compensation to the plan participants in the future. At December 31, 2006 and 2005, the Company has funded approximately $6.9 million and $4.8 million, respectively, into a separate account, which is not restricted as to its use. The Company’s liability under the plan is equal to the total amount of compensation deferred by the plan participants and earnings on the deferred compensation pursuant to investments elected by the plan participants. The Company’s liability as of December 31, 2006 and 2005 was $6.6 million and $4.8 million, respectively, which are included in the accompanying Consolidated Balance Sheets.

 

18. Stock Option and Incentive Plan and Stock Purchase Plan

Boston Properties, Inc. has established a stock option and incentive plan for the purpose of attracting and retaining qualified employees and rewarding them for superior performance in achieving the Company’s business goals and enhancing stockholder value.

Under the plan, the number of shares of Common Stock available for issuance is 14,699,162 shares plus as of the first day of each calendar quarter after January 1, 2000, 9.5% of any net increase since the first day of the preceding calendar quarter in the total number of shares of Common Stock outstanding, on a fully converted basis (excluding Preferred Stock). At December 31, 2006, the number of shares available for issuance under the plan was 4,081,261, of which a maximum of 1,073,541 shares may be granted as awards other than stock options.

Options granted under the plan became exercisable over a two-, three- or five-year period and have terms of ten years, as determined at the time of the grant. All options were granted at the fair market value of the Company’s Common Stock at the dates of grant. As of January 17, 2005, all outstanding options had become fully vested and exercisable.

Boston Properties, Inc. issued 9,182, 12,317 and 32,585 shares of restricted stock and the Company issued 147,845, 211,408 and 166,430 LTIP Units under the plan during the years ended December 31, 2006, 2005 and 2004, respectively. The shares of restricted stock were valued at approximately $0.8 million ($89.03 per share weighted-average), $0.7 million ($57.99 per share weighted-average) and $1.6 million ($49.88 per share weighted-average) for the years ended December 31, 2006, 2005 and 2004, respectively. LTIP Units issued during 2006 and 2005 were valued using an option pricing model in accordance with the provisions of SFAS No. 123R. LTIP Units issued during the years ended December 31, 2006 and 2005 were valued at approximately $11.2 million and $10.5 million, respectively. The weighted-average per unit fair value of LTIP Unit grants in 2006 and 2005 was $75.64 and $49.59, respectively. The per unit fair value of each LTIP Unit granted in 2006 and 2005 was estimated on the date of grant using the following assumptions; an expected life of 6.5 and 8 years, a risk-free interest rate of 4.97% and 3.96% and an expected price volatility of 17.84% and 20.00%, respectively. For the year ended December 31, 2004 LTIP Units were valued at approximately $8.3 million ($49.82 per share weighted-average). An LTIP Unit is generally the economic equivalent of a share of restricted stock in Boston Properties, Inc. The aggregate value of the LTIP Units Partners’ Capital as it is reflected in Redeemable Partnership Units. The restricted stock and LTIP Units granted to employees between January 1, 2004 and November 21, 2006 vest over a five-year term. Grants of restricted stock and LTIP Units made on and after November 22, 2006 vest in four annual equal installments. Restricted stock and LTIP Units are measured at fair value on the date of grant based on the number of shares or units granted, as adjusted for forfeitures and the price

 

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of Boston Properties, Inc.’s Common Stock on the date of grant as quoted on the New York Stock Exchange. Such value is recognized as an expense ratably over the corresponding employee service period. Distributions paid on both vested and unvested shares of restricted stock and LTIP Units are charged directly to Partners’ Capital and Redeemable Partnership Units, respectively, in the Consolidated Balance Sheets. Stock-based compensation expense associated with restricted stock and LTIP Units was approximately $7.7 million, $6.4 million and $4.0 million for the years ended December 31, 2006, 2005 and 2004, respectively. In addition, in accordance with the modified prospective application transition provisions of SFAS No. 123R, the Company has recognized compensation expense of approximately $50,000 relating to its unvested stock options of Boston Properties, Inc. for the year ended December 31, 2005. At December 31, 2006, there was $19.3 million of unrecognized compensation cost related to unvested restricted stock and LTIP Units that is expected to be recognized over a weighted-average period of approximately 3.2 years.

In connection with the declaration of the special cash distributions of $5.40 per unit paid on January 30, 2007 to unitholders of record on December 29, 2006 and $2.50 per unit paid on October 31, 2005 to unitholders of record on September 30, 2005, the Board of Directors of Boston Properties, Inc. approved adjustments to all its outstanding stock option awards that were intended to ensure that its employees, directors and other persons who held such stock options were not disadvantaged by the special cash distributions. The exercise prices and number of all outstanding options were adjusted as of the close of business on the last trading day prior to the related “ex-dividend” date such that each option had the same fair value to the holder before and after giving effect to the payment of the special cash distributions. Accordingly, pursuant to the provisions of SFAS No. 123R, no compensation cost has been recognized in the Consolidated Statements of Operations in connection with such adjustments. As a result, effective as of the close of business on December 26, 2006, 2,655,275 outstanding stock options with a weighted-average exercise price of $39.37 were adjusted to 2,788,634 outstanding options with a weighted-average exercise price of $37.49, and effective as of the close of business on September 27, 2005, 4,325,656 outstanding stock options with a weighted-average exercise price of $38.96 were adjusted to 4,481,864 outstanding options with a weighted-average exercise price of $37.61. There were no other adjustments to the terms of the outstanding stock option awards.

A summary of the status of the Boston Properties, Inc.’s stock options as of December 31, 2006, 2005 and 2004 and changes during the years ended December 31, 2006, 2005 and 2004 are presented below:

 

     Shares     Weighted
Average
Exercise
Price

Outstanding at December 31, 2003

   9,439,680     $ 36.08

Granted

   —         —  

Exercised

   (3,814,274 )   $ 33.14

Canceled

   (25,532 )   $ 37.26
            

Outstanding at December 31, 2004

   5,599,874     $ 38.08

Granted

   —         —  

Exercised

   (1,270,436 )   $ 35.06

Canceled

   (34,158 )   $ 35.78

Special Dividend Adjustment

   156,208     $ 37.61
            

Outstanding at December 31, 2005

   4,451,488     $ 37.63

Granted

   —         —  

Exercised

   (1,793,418 )   $ 35.05

Canceled

   (2,795 )   $ 28.31

Special Dividend Adjustment

   133,359     $ 37.49
            

Outstanding at December 31, 2006

   2,788,634     $ 37.49
            

 

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The following table summarizes information about stock options outstanding at December 31, 2006:

 

Options Outstanding

   Options Exercisable

Range of Exercise
Prices

   Number
Outstanding at
12/31/06
   Weighted-Average
Remaining
Contractual Life
   Weighted-Average
Exercise Price
   Number Exercisable
at 12/31/06
   Weighted-Average
Exercise Price

$22.98-$34.65

   663,936    4.8 Years    $ 34.24    663,936    $ 34.24

$35.91-$38.72

   2,124,698    4.1 Years    $ 38.50    2,124,698    $ 38.50

The total intrinsic value of the outstanding and exercisable stock options as of December 31, 2006 was approximately $207.4 million. In addition, the Company had 4,451,488 and 5,196,166 options exercisable at weighted-average exercise prices of $37.63 and $38.11 at December 31, 2005 and 2004, respectively.

Boston Properties, Inc. adopted the 1999 Non-Qualified Employee Stock Purchase Plan (the “Stock Purchase Plan”) to encourage the ownership of Common Stock by eligible employees. The Stock Purchase Plan became effective on January 1, 1999 with an aggregate maximum of 250,000 shares of Common Stock available for issuance. The Stock Purchase Plan provides for eligible employees to purchase on the business day immediately following the end of the biannual purchase periods (i.e., January 1-June 30 and July 1-December 31) shares of Common Stock at a purchase price equal to 85% of the average closing prices of the Common Stock during the last ten business days of the purchase period. Boston Properties, Inc. issued 7,633, 7,492 and 11,125 shares with the weighted average purchase price equal to $69.02 per share, $56.56 per share and $41.54 per share under the Stock Purchase Plan during the years ended December 31, 2006, 2005 and 2004, respectively.

Effective January 1, 2005, the Company adopted the fair value recognition provisions of SFAS No. 123, as amended by SFAS No. 148. The Company’s share of compensation cost under SFAS No. 123, as amended by SFAS No. 148, for the stock performance-based plan would have been $1.8 million for the year ended December 31, 2004. Had compensation cost for Boston Properties, Inc.’s grants for stock-based compensation plans been determined consistent with SFAS No. 123, as amended by SFAS No. 148, the Company’s net income, and net income per common unit for the year ended December 31, 2004 would approximate the pro forma amounts below:

 

     2004

Net income (in thousands)

   $ 342,993

Net income per common unit—basic

   $ 2.67

Net income per common unit—diluted

   $ 2.63

 

19. Selected Interim Financial Information (unaudited)

The tables below reflect the Company’s selected quarterly information for the years ended December 31, 2006 and 2005. Certain 2005 amounts have been reclassified to conform to the current presentation of discontinued operations.

 

    2006 Quarter Ended
    March 31,   June 30,   September 30,   December 31,
    (in thousands, except for per unit amounts)

Total revenue

  $ 356,104   $ 370,349   $ 372,460   $ 378,673

Income from continuing operations

  $ 78,472   $ 57,059   $ 110,141   $ 98,696

Net income available to common unitholders

  $ 81,431   $ 730,853   $ 128,406   $ 86,287

Income available to common unitholders per unit—basic

  $ 0.61   $ 5.41   $ 0.94   $ 0.63

Income available to common unitholders per unit—diluted

  $ 0.60   $ 5.32   $ 0.92   $ 0.62

 

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    2005 Quarter Ended
    March 31,   June 30,   September 30,   December 31,
    (in thousands, except for per unit amounts)

Total revenue

  $ 354,273   $ 357,935   $ 359,094   $ 366,333

Income from continuing operations

  $ 76,554   $ 69,627   $ 84,329   $ 87,307

Net income available to common unitholders

  $ 73,922   $ 199,934   $ 69,453   $ 183,692

Income available to common unitholders per unit—basic

  $ 0.56   $ 1.51   $ 0.52   $ 1.37

Income available to common unitholders per unit—diluted

  $ 0.55   $ 1.48   $ 0.51   $ 1.35

 

20. Held for Sale/Discontinued Operations

Effective January 1, 2002, the Company adopted the provisions of SFAS No. 144, “Accounting for the Impairment or Disposal of Long-Lived Assets.” SFAS No. 144 requires that long-lived assets that are to be disposed of by sale be measured at the lesser of (1) book value or (2) fair value less cost to sell. In addition, it requires that one accounting model be used for long-lived assets to be disposed of by sale and broadens the presentation of discontinued operations to include more disposal transactions.

During the year ended December 31, 2006, the Company sold 280 Park Avenue, a Class A office property totaling approximately 1,179,000 net rentable square feet located in midtown Manhattan, as discussed in Note 3. On November 17, 2006, the Company executed a binding agreement for the sale of the long-term leasehold interest in 5 Times Square in New York City and related credits, for approximately $1.28 billion in cash. 5 Times Square is a fully-leased Class A office tower that contains approximately 1,101,779 net rentable square feet. On February 15, 2007, the Company completed the sale of 5 Times Square (See Note 23). At December 31, 2006, the Company had categorized 5 Times Square as “held for sale” in its Consolidated Balance Sheets. The following table reflects the assets and liabilities of 5 Times Square at December 31, 2006:

 

      December 31, 2006

5 Times Square Balance Sheet

  

Total real estate, net

   $ 410,860

Accrued rental income

     50,527

Deferred charges, net

     29,947

Other assets

     4,393
      

Total assets

   $ 495,727
      

Other liabilities

   $ 3,007

Equity

     492,720
      

Total liabilities and equity

   $ 495,727
      

During the year ended December 31, 2005, the Company sold the following operating properties:

 

   

Old Federal Reserve, a Class A office property totaling approximately 150,000 net rentable square feet located in San Francisco, California;

 

   

100 East Pratt Street, a Class A office property totaling approximately 639,000 net rentable square feet located in Baltimore, Maryland;

 

   

Riverfront Plaza, a Class A office property totaling approximately 910,000 net rentable square feet located in Richmond, Virginia;

 

   

Residence Inn by Marriott, a 221-room extended-stay hotel property located in Cambridge, Massachusetts;

 

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40-46 Harvard Street, an industrial property totaling approximately 152,000 net rentable square feet located in Westwood, Massachusetts; and

 

   

Embarcadero Center West Tower, a Class A office property totaling approximately 475,000 net rentable square feet located in San Francisco, California.

During the year ended December 31, 2004, the Company sold the following operating properties:

 

   

430 Rozzi Place, an industrial property totaling 20,000 net rentable square feet located in South San Francisco, California;

 

   

Hilltop Office Center, a complex of nine office/technical properties totaling approximately 143,000 net rentable square feet located in South San Francisco, California;

 

   

Sugarland Business Park—Building Two, an office/technical property totaling approximately 59,000 net rentable square feet located in Herndon, Virginia;

 

   

Decoverly Two, Three, Six and Seven, consisting of Two Class A office properties totaling approximately 155,000 net rentable square feet and two land parcels, one of which is subject to a ground lease, located in Rockville, Maryland;

 

   

The Arboretum, a Class A office property totaling approximately 96,000 net rentable square feet located in Reston, Virginia;

 

   

38 Cabot Boulevard, an industrial property totaling approximately 161,000 net rentable square feet located in Langhorne, Pennsylvania;

 

   

Sugarland Business Park—Building One, an office/technical property totaling approximately 52,000 net rentable square feet located in Herndon, Virginia;

 

   

204 Second Avenue, a Class A office property totaling approximately 41,000 net rentable square feet located in Waltham, Massachusetts; and

 

   

560 Forbes Boulevard, an industrial property totaling approximately 40,000 net rentable square feet located in South San Francisco, California.

Due to the Company’s continuing involvement in the management, for a fee, of 280 Park Avenue and 5 Times Square through agreements with the buyers and other financial obligations to the buyers as discussed in Note 3, 280 Park Avenue and 5 Times Square have not been categorized as discontinued operations in the accompanying Consolidated Statements of Operations. Due to the Company’s continuing involvement in the management, for a fee, of the 100 East Pratt Street, Riverfront Plaza, Embarcadero Center West Tower and Hilltop Office Center properties through agreements with the buyers which were entered into at closing, these properties are not categorized as discontinued operations in the accompanying Consolidated Statements of Operations. As a result, the gains on sales related to these properties have been reflected under the caption “Gains on sales of real estate and other assets” in the Consolidated Statements of Operations. The Company has presented the other properties listed above as discontinued operations in its Consolidated Statements of Operations for the years ended December 31, 2005 and 2004, as applicable.

 

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There were no properties categorized as discontinued operations for the year ended December 31, 2006. The following table summarizes income from discontinued operations (net of minority interest) and the related realized gains on sales of real estate from discontinued operations (net of minority interest) for the years ended December 31, 2006, 2005 and 2004:

 

     For the Year Ended December 31,  
          2006              2005               2004       
     (in thousands)  

Total revenue

   $ —      $ 9,400     $ 17,379  

Operating expenses

     —        (6,309 )     (9,849 )

Interest Expense

     —        —         —    

Depreciation and Amortization

     —        (812 )     (3,292 )

Minority interest in property partnership

     —        —         (208 )
                       

Income from discontinued operations

   $ —      $ 2,279     $ 4,030  
                       

Realized gain on sale of real estate

   $ —      $ 57,969     $ 37,423  

Minority interest in property partnership

     —        —         (3,996 )
                       

Realized gains on sales of real estate (net of minority interest)

   $ —      $ 57,969     $ 33,427  
                       

The Company’s application of SFAS No. 144 results in the presentation of the net operating results of these qualifying properties sold during 2005 and 2004, as income from discontinued operations for all periods presented. In addition, SFAS No. 144 results in the gains on sale of these qualifying properties totaling approximately $58.0 million and $33.4 million (net of minority interest in property partnership’s share of $4.0 million) to be reflected as gains on sales of real estate from discontinued operations in the accompanying Consolidated Statements of Operations for the years ended December 31, 2005 and 2004, respectively. The application of SFAS No. 144 does not have an impact on net income available to common unitholders. SFAS No. 144 only impacts the presentation of these properties within the Consolidated Statements of Operations.

 

21. Newly Issued Accounting Standards

In February 2006, the FASB issued SFAS No. 155, “Accounting for Certain Hybrid Financial Instruments—an Amendment of FASB Statements No. 133 and 140” (“SFAS No. 155”). The purpose of SFAS No. 155 is to simplify the accounting for certain hybrid financial instruments by permitting fair value re-measurement for any hybrid financial instrument that contains an embedded derivative that otherwise would require bifurcation. SFAS No. 155 is effective for all financial instruments acquired or issued after the beginning of an entity’s first fiscal year that begins after September 15, 2006. The Company does not expect the adoption of SFAS No. 155 to have a material impact on the Company’s cash flows, results of operations, financial position or liquidity.

In March 2006, the FASB issued SFAS No. 156, “Accounting for Servicing of Financial Assets—an Amendment of FASB Statement No. 140” (“SFAS No. 156”). SFAS No. 156 requires recognition of a servicing asset or a servicing liability each time an entity undertakes an obligation to service a financial asset by entering into a servicing contract. SFAS No. 156 also requires that all separately recognized servicing assets and servicing liabilities be initially measured at fair value and subsequently measured at fair value at each reporting date. SFAS No. 156 is effective as of the beginning of an entity’s first fiscal year that begins after September 15, 2006. The Company does not expect the adoption of SFAS No. 156 to have a material impact on the Company’s cash flows, results of operations, financial position or liquidity.

In June 2006, the FASB issued Interpretation No. 48, “Accounting for Uncertainty in Income Taxes, an Interpretation of FASB Statement No. 109” (“FIN No. 48”). FIN No. 48 clarifies the accounting for uncertainty in income taxes recognized in a company’s financial statements and prescribes a recognition threshold and

 

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measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. FIN No. 48 also provides guidance on description, classification, interest and penalties, accounting in interim periods, disclosure and transition. FIN No. 48 is effective for fiscal years beginning after December 15, 2006. The Company does not expect the adoption of FIN No. 48 to have a material impact on the Company’s cash flows, results of operations, financial position or liquidity.

In September 2006, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 108 (“SAB No. 108”), “Considering the Effects of Prior Year Misstatements When Quantifying Misstatements in Current Year Financial Statements.” SAB 108 provides guidance on the consideration of the effects of prior period misstatements in quantifying current year misstatements for the purpose of a materiality assessment. SAB 108 requires the quantification of financial statement misstatements based on the effects of the misstatements on each of the company’s financial statements and the related financial statement disclosures. This model is commonly referred to as the “dual approach” because it requires quantification of errors under both the iron curtain and the roll-over methods. The roll-over method focuses primarily on the impact of a misstatement on the income statement—including the reversing effect of prior year misstatements—but its use can lead to the accumulation of misstatements in the balance sheet. The iron-curtain method focuses primarily on the effect of correcting the period-end balance sheet with less emphasis on the reversing effects of prior year errors on the income statement. SAB 108 was effective for financial statements for fiscal years ending after November 15, 2006. The adoption of SAB 108 did not have a material impact on the Company’s cash flows, results of operations, financial position or liquidity.

 

22. Related Party Transactions

The Company paid Applied Printing Technologies, a printing company affiliated with Mr. Mortimer B. Zuckerman, approximately $0, $67,000 and $53,000 during the years ended December 31, 2006, 2005 and 2004, respectively, for printing services principally relating to the printing of Boston Properties, Inc.’s annual report to shareholders.

An entity controlled by Mr. Mortimer B. Zuckerman, Chairman of the Board of Directors of Boston Properties, Inc., owned an office building located at 2400 N Street, N.W. in Washington, D.C., in which a company affiliated with Mr. Zuckerman leased 100% of the building. The Company had entered into an agreement with an entity controlled by Mr. Zuckerman to manage this property on terms comparable with other third-party property management agreements that the Company currently has in place. The disinterested members of Boston Properties, Inc.’s Board of Directors had approved the management agreement between the Company and Mr. Zuckerman’s affiliate. Under the management agreement, the Company had also agreed to provide consulting services and assistance in connection with a possible sale of this property in exchange for a fee of $100,000 payable upon the closing of the sale of the property. During the years ended December 31, 2005 and 2004, the Company received approximately $329,000 and $777,000, respectively, for reimbursements of building operating costs and earned $66,000 and $135,000, respectively, in management fees under the management agreement. During the year ended December 31, 2005, the entity controlled by Mr. Zuckerman closed on the sale of the property and pursuant to the management agreement the Company received and recognized $100,000 for consulting services and assistance in connection with the sale.

On October 26, 2005, the Company entered into an agreement with an entity owned by Mr. Zuckerman. Under the agreement, which was approved by the disinterested members of Boston Properties, Inc.’s Board of Directors, the Company renders project management services to such entity in exchange for a fee. The Company extended its services under a letter dated October 10, 2006. Under the agreement, as extended, the Company earned $79,800 and $34,200 during the years ended December 31, 2006 and 2005, respectively.

A firm controlled by Mr. Raymond A. Ritchey’s brother was paid aggregate leasing commissions, of approximately $559,000, $0 and $626,000 for the years ended December 31, 2006, 2005 and 2004, respectively,

 

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related to certain exclusive leasing arrangements for certain Northern Virginia properties. Mr. Ritchey is an Executive Vice President of Boston Properties, Inc.

Mr. Martin Turchin, a member of Boston Properties, Inc.’s Board of Directors, is a non-executive/non-director Vice Chairman of CB Richard Ellis (“CBRE”). Through an arrangement with CBRE and its predecessor, Insignia/ESG, Inc. that has been in place since 1985, Mr. Turchin and Turchin & Associates, an entity owned by Mr. Turchin (95%) and his son (5%), participate in brokerage activities for which CBRE is retained as leasing agent, some of which involve leases for space within buildings owned by the Company. Additionally, Mr. Turchin’s son is employed by CBRE and works on transactions for which CBRE earns commission income from the Company. Mr. Turchin’s son’s compensation from CBRE is in the form of salary and bonus, neither of which is directly tied to CBRE’s transactions with the Company. For the years ended December 31, 2006, 2005 and 2004, Mr. Turchin, directly and through Turchin & Associates, received commission income of $19,000, $194,000 and $220,000, respectively, from commissions earned by CBRE and its predecessor, Insignia/ESG, Inc., from the Company. Pursuant to its arrangement with CBRE, Turchin & Associates has confirmed to the Company that it is paid on the same basis with respect to properties owned by the Company as it is with respect to properties owned by other clients of CBRE. Mr. Turchin does not participate in any discussions or other activities relating to the Company’s contractual arrangements with CBRE either in his capacity as a member of Boston Properties, Inc.’s Board of Directors or as a Vice Chairman of CBRE.

On June 30, 1998, the Company acquired from entities controlled by Mr. Alan B. Landis a portfolio of properties known as the Carnegie Center Portfolio and Tower Center One and related operations and development rights (collectively, the “Carnegie Center Portfolio”). In connection with the acquisition of the Carnegie Center Portfolio, the Company entered into a development agreement (the “Development Agreement”) with affiliates of Mr. Landis providing for up to approximately 2,000,000 square feet of development in or adjacent to the Carnegie Center office complex. An affiliate of Mr. Landis was entitled to a purchase price for each parcel developed under the Development Agreement calculated on the basis of $20 per rentable square foot of property developed. Another affiliate of Mr. Landis was eligible to earn a contingent payment for each developed property that achieves a stabilized return in excess of a target annual return ranging between 10.5% and 11%. The Development Agreement also provided that upon negotiated terms and conditions, the Company and Mr. Landis would form a development company to provide development services for these development projects and would share the expenses and profits, if any, of this new company. In addition, in connection with the acquisition of the Carnegie Center Portfolio, Mr. Landis became a director of Boston Properties, Inc. pursuant to an Agreement Regarding Directorship, dated as of June 30, 1998, with Boston Properties, Inc. (the “Directorship Agreement”). Under the Directorship Agreement, Boston Properties, Inc. agreed to nominate Mr. Landis for re-election as a director at each annual meeting of stockholders of Boston Properties, Inc. in a year in which his term expires, provided that specified conditions are met.

On October 21, 2004, the Company entered into an agreement (the “2004 Agreement”) to modify several provisions of the Development Agreement. Under the terms of the 2004 Agreement, the Company and affiliates of Mr. Landis amended the Development Agreement to limit the rights of Mr. Landis and his affiliates to participate in the development of properties under the Development Agreement. Among other things, Mr. Landis agreed that (1) Mr. Landis and his affiliates will have no right to participate in any entity formed to acquire land parcels or the development company formed by the Company to provide development services under the Development Agreement, (2) Mr. Landis will have no right or obligation to play a role in development activities engaged in by the development company formed by the Company under the Development Agreement or receive compensation from the development company and (3) the affiliate of Mr. Landis will have no right to receive a contingent payment for developed properties based on stabilized returns. In exchange, Boston Properties, Inc. (together with the Company) agreed to:

 

   

effective as of June 30, 1998, pay Mr. Landis $125,000 on January 1 of each year until the earlier of (A) January 1, 2018, (B) the termination of the Development Agreement or (C) the date on which all

 

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development properties under the Development Agreement have been conveyed pursuant to the Development Agreement, with $750,000, representing payments of this annual amount from 1998 to 2004, being paid upon execution of the 2004 Agreement; and

 

   

pay an affiliate of Mr. Landis, in connection with the development of land parcels acquired under the Development Agreement, an aggregate fixed amount of $10.50 per rentable square foot of property developed (with a portion of this amount (i.e., $5.50) being subject to adjustment, in specified circumstances, based on future increases in the Consumer Price Index) in lieu of a contingent payment based on stabilized returns, which payment could have been greater or less than $10.50 per rentable square foot of property developed.

The Company also continues to be obligated to pay an affiliate of Mr. Landis the purchase price of $20 per rentable square foot of property developed for each land parcel acquired as provided in the original Development Agreement. During the 20-year term of the Development Agreement, until such time, if any, as the Company elects to acquire a land parcel, an affiliate of Mr. Landis will remain responsible for all carrying costs associated with such land parcel.

In addition, in connection with entering into the 2004 Agreement, Mr. Landis resigned as a director of Boston Properties, Inc. effective as of May 11, 2005 and agreed that Boston Properties, Inc. will have no future obligation to nominate Mr. Landis as a director of Boston Properties, Inc. under the Directorship Agreement or otherwise. Mr. Landis did not resign because of a disagreement with Boston Properties, Inc. on any matter relating to its operations, policies or practices.

During the year ended December 31, 2004, a joint venture in which the Company has a 35.7% interest sold 430 Rozzi Place, an industrial property totaling 20,000 net rentable square feet, Hilltop Office Center, comprised of nine office/technical properties totaling approximately 143,000 net rentable square feet and 560 Forbes Boulevard, an industrial property totaling 40,000 net rentable square feet located in South San Francisco, California. The properties were sold in three separate transactions for aggregate net cash proceeds of approximately $17.8 million and the assumption by the buyer of the mortgage debt on the Hilltop Office Center properties totaling $5.2 million, resulting in aggregate gains on sale to the Company of approximately $10.1 million (net of minority interest in the property partnership’s share of approximately $11.3 million). The joint venture was consolidated in the Company’s financial statements due to the Company’s unilateral control. The outside partners in the joint venture, owning a 64.3% interest, are related parties of Mr. Zuckerman. The related parties were allocated their pro-rata share of the net proceeds from the sale totaling approximately $11.3 million.

In accordance with Boston Properties, Inc.’s 1997 Stock Option and Incentive Plan, as amended, and as approved by the Board of Directors of Boston Properties, Inc., each non-employee director has made an election to receive deferred stock units in lieu of cash fees. The deferred stock units will be settled in shares of common stock upon the cessation of such director’s service on the Board of Directors. As a result of these elections, the aggregate cash fees otherwise payable to a non-employee director during a fiscal quarter are converted into a number of deferred stock units equal to the aggregate cash fees divided by the last reported sales price of a share of Boston Properties, Inc.’s common stock on the last trading of the applicable fiscal quarter. The deferred stock units are also credited with dividend equivalents. At December 31, 2006 and 2005, Boston Properties, Inc. had outstanding 54,157, 46,800 and 43,552 deferred stock units, respectively, with an aggregate value of approximately $3.0 million, $2.4 million and $2.1 million, respectively, which amounts are included in the accompanying Consolidated Balance Sheets.

 

23. Subsequent Events

On January 5, 2007 and January 18, 2007, the Company acquired adjacent parcels of land located in Springfield, Virginia for a purchase price of approximately $12.0 million and $4.5 million, respectively. The

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

Company also has an agreement to acquire an additional adjacent parcel of land for a purchase price of approximately $25.6 million. The assembled land parcels will support a commercial development of approximately 800,000 net rentable square feet.

On January 9, 2007, the Company acquired a parcel of land located in New York City, through a majority-owned venture, for a purchase price of approximately $38.8 million. On January 24, 2007, the Company acquired an adjacent parcel of land, through a majority-owned venture, for a purchase price of approximately $160.0 million. On February 1, 2007, the Company acquired an additional adjacent parcel of land, through a majority-owned venture, for a purchase price of approximately $30.0 million. The Company also has agreements to acquire other real estate interests, through the majority-owned venture, for approximately $30.0 million. The acquisitions were financed with members’ capital contributions and a $160.0 million mortgage loan bearing interest at a variable rate equal to LIBOR plus 0.40% per annum and maturing in January 2009. The assembled land parcels will support the development of an approximately 885,000 net rentable square foot Class A office tower. On February 26, 2007, the Company entered into an agreement to acquire the outside member’s equity interest in the venture for approximately $21.0 million.

On January 29, 2007, the Company acquired a parcel of land located in Waltham, Massachusetts for a purchase price of approximately $13.9 million.

On February 2, 2007, the Company issued 5,951 shares of restricted stock and the Company’s Operating Partnership issued 152,651 LTIP Units to employees under the stock option and incentive plan.

On February 6, 2007, the Company completed an offering of $862.5 million in aggregate principal amount (including $112.5 million as a result of the exercise by the initial purchasers of their over-allotment option) of its 2.875% exchangeable senior notes due 2037. The notes were priced at 97.433333% of their face amount, resulting in an effective interest rate of approximately 3.438% per annum and net proceeds to the Company of approximately $840.0 million. The notes mature on February 15, 2037, unless earlier repurchased, exchanged or redeemed.

Upon the occurrence of specified events, holders of the notes may exchange their notes prior to the close of business on the scheduled trading day immediately preceding February 20, 2012 into cash and, at the Company’s option, shares of Boston Properties, Inc. common stock at an initial exchange rate of 6.6090 shares per $1,000 principal amount of notes (or an initial exchange price of approximately $151.31 per share of Boston Properties, Inc. common stock). On and after February 20, 2012, the notes will be exchangeable at any time prior to the close of business on the scheduled trading day immediately preceding the maturity date at the option of the holder at the applicable exchange rate. The initial exchange rate is subject to adjustment in certain circumstances.

Prior to February 20, 2012, the Company may not redeem the notes except to preserve Boston Properties, Inc.’s status as a REIT. On or after February 20, 2012, the Company may redeem all or a portion of the notes for cash at a redemption price equal to 100% of the principal amount plus accrued and unpaid interest. Note holders may require the Company to repurchase all or a portion of the notes on February 15 of 2012, 2017, 2022, 2027 and 2032 at a purchase price equal to 100% of the principal amount plus accrued and unpaid interest up to, but excluding, the repurchase date. The Company will pay cash for all notes so repurchased.

If Boston Properties, Inc. undergoes a “fundamental change,” note holders will have the option to require the Company to purchase all or any portion of the notes at a purchase price equal to 100% of the principal amount of the notes to be purchased plus any accrued and unpaid interest to, but excluding, the fundamental change purchase date. The Company will pay cash for all notes so purchased. In addition, if a fundamental

 

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BOSTON PROPERTIES LIMITED PARTNERSHIP

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

 

change occurs prior to February 20, 2012, the Company will increase the exchange rate for a holder who elects to exchange its notes in connection with such a fundamental change under certain circumstances. The notes are senior unsecured obligations of the Company and will rank equally in right of payment to all existing and future senior unsecured indebtedness and senior to any future subordinated indebtedness of the Company. The notes will effectively rank junior in right of payment to all existing and future secured indebtedness of the Company. The notes will be structurally subordinated to all liabilities of the subsidiaries of the Company.

The Company offered and sold the notes to the initial purchasers in reliance on the exemption from registration provided by Section 4(2) of the Securities Act of 1933. The initial purchasers then sold the notes to qualified institutional buyers pursuant to the exemption from registration provided by Rule 144A under the Securities Act.

In connection with the closing, Boston Properties, Inc. and the Company entered into a Registration Rights Agreement (the “Registration Rights Agreement”) with the initial purchasers. Under the Registration Rights Agreement, Boston Properties, Inc. and the Company have agreed, for the benefit of the holders of the notes, to file with the Securities and Exchange Commission, or have on file, a shelf registration statement providing for the sale by the holders of the notes and the Boston Properties, Inc. common stock, if any, issuable upon exchange of the notes (the “Registrable Securities”), within 90 days after the original issuance of the notes and to use reasonable best efforts to cause such shelf registration statement to be declared effective within 210 days after the original issuance of the notes or otherwise make available for use by selling security holders an effective shelf registration statement no later than such date. Boston Properties, Inc. and the Company will be required to pay liquidated damages in the form of specified additional interest to the holders of the notes if they fail to comply with their respective obligations to register the notes and the Boston Properties, Inc. common stock issuable upon exchange of the notes within specified time periods, or if the registration statement ceases to be effective or the use of the prospectus is suspended for specified time periods. Neither Boston Properties, Inc. nor the Company will be required to pay liquidated damages with respect to any note after it has been exchanged for any Boston Properties, Inc. common stock.

On February 8, 2007, 439,674 Series Two Preferred Units of the Company’s Operating Partnership were converted by the holder thereof into 577,000 OP Units. The OP Units were subsequently presented by the holder for redemption and were redeemed by the Company in exchange for an equal number of shares of Common Stock.

On February 12, 2007, the Company refinanced its mortgage loan collateralized by 599 Lexington Avenue located in New York City. The new mortgage financing totaling $750.0 million bears interest at a fixed interest rate of 5.57% per annum and matures on March 1, 2017. On December 19, 2006, the Company had terminated its forward-starting interest rate swap contracts and received approximately $10.9 million, which amount will reduce the Company’s interest expense over the ten-year term of the financing, resulting in an effective interest rate for the financing of 5.38% per annum for the financing. The Company repaid the $225.0 million draw on its Unsecured Line of Credit, which draw was collateralized by 599 Lexington Avenue. In addition, the Company used the net proceeds from the refinancing to repay the mortgage loan collateralized by Times Square Tower located in New York City totaling $475.0 million. The Times Square Tower mortgage loan bore interest at a variable rate equal to LIBOR plus 0.50% per annum and was scheduled to mature on July 9, 2008. There was no prepayment penalty associated with the repayment.

On February 15, 2007, the Company completed the sale of its long-term leasehold interest in 5 Times Square in New York City and related credits, for approximately $1.28 billion in cash. 5 Times Square is a fully-leased Class A office tower that contains approximately 1,101,779 net rentable square feet.

 

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Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

 

Item 9A. Controls and Procedures

As of the end of the period covered by this report, an evaluation was carried out by the management of Boston Properties, Inc., with the participation of its Chief Executive Officer and Chief Financial Officer, of the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934). Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer of Boston Properties, Inc. concluded that these disclosure controls and procedures were effective as of the end of the period covered by this report. In addition, no change in our internal control over financial reporting (as defined in Rule 13a-15(f) under the Securities Exchange Act of 1934) occurred during the fourth quarter of our fiscal year ended December 31, 2006 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Management’s Report on Internal Control over Financial Reporting and the Report of Independent Registered Public Accounting Firm thereon are set forth on pages 83 and 84 of this Annual Report on Form 10-K and are incorporated herein by reference.

 

Item 9B. Other Information

None.

 

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PART III

 

Item 10. Directors, Executive Officers and Corporate Governance

We are managed by Boston Properties, Inc. in its capacity as our general partner. The information concerning Boston Properties, Inc.’s directors and executive officers required by Item 10 will be included in Boston Properties, Inc.’s Proxy Statement to be filed relating to its 2007 Annual Meeting of Stockholders and is incorporated herein by reference.

Section 16(a) of the Exchange Act requires the executive officers and directors of Boston Properties, Inc., our general partner, and persons who own more than ten percent of a registered class our equity securities to file reports of ownership and changes in ownership with the SEC and the New York Stock Exchange. Officers, directors and greater than ten percent beneficial owners are required by SEC regulations to furnish us with copies of all Section 16(a) forms they file. To our knowledge, based solely on our review of the copies of such reports furnished to us and written representations that no other reports were required during the fiscal year ended December 31, 2006, all Section 16(a) filing requirements applicable to the executive officers, directors and greater than ten percent beneficial owners of BPLP were satisfied.

The Board of Directors of Boston Properties, Inc. adopted a Code of Business Conduct and Ethics, which governs business decisions made and actions taken by the directors, officers and employees of Boston Properties, Inc. A copy of this code is available on Boston Properties, Inc.’s website at http://www.bostonproperties.com under the heading “Corporate Governance.” Boston Properties, Inc. intends to disclose on this website any amendment to, or waiver of, any provision of this Code applicable to its directors and executive officers that would otherwise be required to be disclosed under the rules of the SEC or the New York Stock Exchange. A copy of this Code is also available in print upon written request addressed to Investor Relations, Boston Properties, Inc., 111 Huntington, Avenue, Boston, MA 02199.

 

Item 11. Executive Compensation

We are managed by Boston Properties, Inc., in its capacity as our general partner. The information concerning our executive compensation required by Item 11 will be included in Boston Properties, Inc.’s Proxy Statement to be filed relating to its 2007 Annual Meeting of Stockholders and is incorporated herein by reference.

 

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Boston Properties, Inc. maintains the 1997 Stock Option and Incentive Plan and the 1999 Non-Qualified Employee Stock Purchase Plan. The following table provides information about these plans as of December 31, 2006.

 

    Equity Compensation Plan Information  

Plan category

  Number of securities to be
issued upon exercise of
outstanding options,
warrants and rights
    Weighted-average exercise
price of outstanding
options, warrants and rights
    Number of securities
remaining available for
future issuance under
equity compensation plans
(excluding securities
reflected in column (a))
 
    (a)     (b)     (c)  

Equity compensation plans approved by security holders (1)

  3,363,910 (2)   $ 37.49 (2)   4,081,261 (3)

Equity compensation plans not approved by security holders (4)

  N/A       N/A     178,013  
                   

Total

  3,363,910     $ 37.49     4,259,274  
                   

(1) Includes information related to Boston Properties, Inc.’s 1997 Stock Option and Incentive Plan, as amended.

 

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(2) Includes (a) 2,788,634 shares of common stock issuable upon the exercise of outstanding options, (all of which are vested) (b) 521,119 long term incentive units (LTIP units) (14,975 of which are vested) that, upon the satisfaction of certain conditions, are convertible into our common units, which may be presented to Boston Properties, Inc. for redemption and acquired by Boston Properties, Inc. for shares of common stock and (c) 54,157 deferred stock units which were granted pursuant to an election by each of the non-employee directors of Boston Properties, Inc. to defer all cash compensation otherwise payable to such director and to receive in lieu of such deferred cash compensation shares of Boston Properties, Inc’s common stock upon the director’s retirement from Boston Properties, Inc.’s Board of Directors. Does not include 159,869 shares of restricted stock as they have been reflected in Boston Properties, Inc.’s total shares outstanding. Because there is no exercise price associated with LTIP units or deferred stock units, such shares are not included in the weighed-average exercise price calculation.
(3) A maximum of 1,073,541 shares may be granted as awards other than stock options.
(4) Includes information related to the 1999 Non-Qualified Employee Stock Purchase Plan.

The 1999 Non-Qualified Employee Stock Purchase Plan (the “ESPP”)

The ESPP was adopted by the Board of Directors of Boston Properties, Inc. on October 29, 1998. The ESPP has not been approved by the stockholders of Boston Properties, Inc. The ESPP is available to all employees that are employed on the first day of the purchase period. Under the ESPP, each eligible employee may purchase shares of Boston Properties, Inc.’s common stock at semi-annual intervals each year at a purchase price equal to 85% of the average closing prices of Boston Properties, Inc.’s common stock on the New York Stock Exchange during the last ten business days of the purchase period. Each eligible employee may contribute no more than $10,000 per year to purchase Boston Properties, Inc.’s common stock under the ESPP.

Additional information concerning Security Ownership of Beneficial Owners and Management and Related Stockholder Matters required by Item 12 will be included in Boston Properties, Inc.’s Proxy Statement to be filed relating to its 2007 Annual Meeting of Stockholders and is incorporated herein by reference.

 

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information concerning certain relationships and related transactions required by Item 13 will be included in Boston Properties, Inc.’s Proxy Statement to be filed relating to its 2007 Annual Meeting of Stockholders and is incorporated herein by reference.

 

Item 14. Principal Accountant Fees and Services

The information concerning our principal accounting fees and services required by Item 14 will be included in Boston Properties, Inc.’s Proxy Statement to be filed relating to its 2007 Annual Meeting of Stockholders and is incorporated herein by reference.

 

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PART IV

 

Item 15. Exhibits, Financial Statement Schedules

(a) Financial Statement Schedule

 

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Boston Properties Limited Partnership

Schedule 3—Real Estate and Accumulated Depreciation

December 31, 2006

(dollars in thousands)

 

Property Name

  Type  

Location

  Encumbrances   Original   Costs
Capitalized
Subsequent
to
Acquisition
   

Land
and
Improve-

ments

 

Building
and
Improve-

ments

 

Land
Held for

Develop-

ment

 

Develop-

ment and
Construction

in Progress

  Total   Accumulated
Depreciation
 

Year(s)

Built/
Renovated

  Depreciable
Lives
(Years)
        Land   Building                  

Embarcadero Center

  Office   San Francisco, CA   $ 418,847   $ 179,697   $ 847,410   $ 149,385     $ 180,417   $ 996,075   $ —     $ —     $ 1,176,492   $ 214,568   1970/1989   (1)

399 Park Avenue

  Office   New York, NY     —       339,200     700,358     8,623       339,200     708,981     —       —       1,048,181     75,396   1961   (1)

Prudential Center

  Office   Boston, MA     265,325     92,077     734,594     166,691       92,327     883,869     13,008     4,158     993,362     180,138   1965/1993/
2002
  (1)

Citigroup Center

  Office   New York, NY     493,526     241,600     494,782     110,526       279,281     567,627     —       —       846,908     74,536   1977/1997   (1)

Times Square Tower

  Office   New York, NY     475,000     165,413     380,438     44,424       164,142     426,133     —       —       590,275     34,731   2004   (1)

Carnegie Center

  Office   Princeton, NJ     125,546     101,772     349,089     30,638       95,396     386,085     18     —       481,499     84,307   1983-1999   (1)

599 Lexington Avenue

  Office   New York, NY     225,000     81,040     100,507     81,683       81,040     182,190     —       —       263,230     109,335   1986   (1)

Gateway Center

  Office   San Francisco, CA     —       28,255     139,245     37,991       29,029     176,462     —       —       205,491     29,442   1984/1986/
2002
  (1)

Reservoir Place

  Office   Waltham, MA     51,916     18,605     92,619     20,111       18,675     112,660     —       —       131,335     27,376   1955/1987   (1)

1333 New Hampshire Avenue

  Office   Washington, DC     —       34,032     85,660     518       34,032     86,178     —       —       120,210     10,719   1996   (1)

3200 Zanker Road

  Office   San Jose, CA     —       36,705     82,863     —         36,705     82,863     —       —       119,568     871   1988   (1)

Seven Cambridge Center

  Office   Cambridge, MA     —       3,457     97,136     —         3,457     97,136     —       —       100,593     5,663   2006   (1)

1330 Connecticut Avenue

  Office   Washington, DC     55,096     25,982     82,311     8,999       25,982     91,310     —       —       117,292     7,397   1984   (1)

Capital Gallery

  Office   Washington, DC     —       4,725     29,560     71,736       6,128     99,893     —       —       106,021     27,203   1981/2006   (1)

Democracy Center

  Office   Bethesda, MD     96,150     12,550     50,015     41,657       13,610     90,612     —       —       104,222     42,212   1985-88/
94-96
  (1)

One Freedom Square

  Office   Reston, VA     78,007     9,929     84,504     6,808       9,883     91,358     —       —       101,241     20,747   2000   (1)

Two Freedom Square

  Office   Reston, VA     —       13,930     77,739     5,890       13,866     83,693     —       —       97,559     12,969   2001   (1)

One and Two Reston Overlook

  Office   Reston, VA     —       16,456     66,192     2,855       16,456     69,047     —       —       85,503     14,546   1999   (1)

140 Kendrick Street

  Office   Needham, MA     58,501     18,095     66,905     251       18,095     67,156     —       —       85,251     4,654   2000   (1)

Discovery Square

  Office   Reston, VA     —       11,198     71,782     797       11,146     72,631     —       —       83,777     12,232   2001   (1)

12310 Sunrise Valley Drive

  Office   Reston, VA     —       9,367     67,431     5,401       10,542     71,657     —       —       82,199     15,280   1987/1988   (1)

Waltham Weston Corporate Center

  Office   Waltham, MA     —       10,385     60,694     5,005       10,350     65,734     —       —       76,084     11,211   2003   (1)

12300 Sunrise Valley Drive

  Office   Reston, VA     —       9,062     58,884     5,398       10,235     63,109     —       —       73,344     13,374   1987/1988   (1)

Five Cambridge Center

  Office   Cambridge, MA     —       18,863     53,346     —         18,863     53,346     —       —       72,209     167   1981/1996   (1)

Four Cambridge Center

  Office   Cambridge, MA     —       19,104     52,078     —         19,104     52,078     —       —       71,182     168   1983/1998   (1)

Prospect Place

  Office   Waltham, MA     —       13,189     49,823     4,050       13,189     53,873     —       —       67,062     1,967   1992   (1)

Reston Corporate Center

  Office   Reston, VA     21,268     9,135     50,857     1,633       9,496     52,129     —       —       61,625     10,548   1984   (1)

New Dominion Technology Park, Bldg. Two

  Office   Herndon, VA     63,000     5,584     51,868     (73 )     5,574     51,805     —       —       57,379     4,167   2004   (1)

Orbital Sciences

  Office   Dulles, VA     —       5,699     51,082     510       5,699     51,592     —       —       57,291     10,816   2000/2001   (1)

191 Spring Street

  Office   Lexington, MA     —       2,850     27,166     21,048       2,850     48,214     —       —       51,064     24,726   1971/1995   (1)

New Dominion Technology Park, Bldg. One

  Office   Herndon, VA     55,420     3,880     43,227     912       3,880     44,139     —       —       48,019     8,388   2001   (1)

303 Almaden Boulevard

  Office   San Jose, CA     —       10,836     35,606     —         10,836     35,606     —       —       46,442     547   1995   (1)

1301 New York Avenue

  Office   Washington, DC     25,061     9,250     18,750     18,017       9,250     36,767     —       —       46,017     9,184   1983/1998   (1)

200 West Street

  Office   Waltham, MA     —       16,148     24,983     (31 )     16,148     24,952     —       —       41,100     7,128   1999   (1)

Sumner Square

  Office   Washington, DC     27,581     624     28,745     11,663       958     40,074     —       —       41,032     10,877   1985   (1)

University Place

  Office   Cambridge, MA     21,203     —       37,091     3,651       27     40,715     —       —       40,742     10,804   1985   (1)

Quorum Office Park

  Office   Chelmsford, MA     —       3,750     32,454     3,475       4,762     34,917     —       —       39,679     5,293   2001   (1)

2600 Tower Oaks Boulevard

  Office   Rockville, MD     —       4,243     31,125     2,158       4,244     33,282     —       —       37,526     7,806   2001   (1)

 

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Property Name

  Type  

Location

  Encumbrances   Original   Costs
Capitalized
Subsequent
to
Acquisition
 

Land
and
Improve-

ments

 

Building
and
Improve-

ments

 

Land
Held for

Develop-

ment

 

Develop-

ment and
Construction

in Progress

  Total   Accumulated
Depreciation
 

Year(s)

Built/
Renovated

  Depreciable
Lives
(Years)
        Land   Building                  

12290 Sunrise Valley Drive

  Office   Reston, VA   —     3,594   32,977   —     3,594   32,977   —     —     36,571   929   2006   (1)

One Cambridge Center

  Office   Cambridge, MA   —     134   25,110   6,776   134   31,886   —     —     32,020   15,584   1987   (1)

500 E Street

  Office   Washington, DC   —     109   22,420   6,501   1,569   27,461   —     —     29,030   14,081   1987   (1)

Bedford Business Park

  Office   Bedford, MA   17,749   534   3,403   22,174   609   25,502   —     —     26,111   16,062   1980   (1)

Eight Cambridge Center

  Office   Cambridge, MA   25,188   850   25,042   108   822   25,178   —     —     26,000   4,781   1999   (1)

Newport Office Park

  Office   Quincy, MA   —     3,500   18,208   619   3,701   18,626   —     —     22,327   4,667   1988   (1)

10 and 20 Burlington Mall Road

  Office   Burlington, MA   20,006   930   6,928   11,316   652   18,522   —     —     19,174   9,418   1984-1989/
95-96
  (1)

201 Spring Street

  Office   Lexington, MA   —     2,849   15,303   386   2,849   15,689   —     —     18,538   5,471   1997   (1)

Ten Cambridge Center

  Office   Cambridge, MA   32,213   1,299   12,943   4,003   1,868   16,377   —     —     18,245   7,037   1990   (1)

Broad Run Business Park, Building E

  Office   Loudon County, VA   —     497   15,131   1,710   666   16,672   —     —     17,338   2,634   2002   (1)

Montvale Center

  Office   Gaithersburg, MD   —     1,574   9,786   5,366   2,399   14,327   —     —     16,726   7,324   1987   (1)

40 Shattuck Road

  Office   Andover, MA   —     709   14,740   1,101   709   15,841   —     —     16,550   2,880   2001   (1)

Three Cambridge Center

  Office   Cambridge, MA   —     174   12,200   3,288   174   15,488   —     —     15,662   7,197   1987   (1)

Lexington Office Park

  Office   Lexington, MA   —     998   1,426   11,891   1,073   13,242   —     —     14,315   7,126   1982   (1)

181 Spring Street

  Office   Lexington, MA   —     1,066   9,520   2,559   1,066   12,079   —     —     13,145   2,426   1999   (1)

7501 Boston Boulevard, Building Seven

  Office   Springfield, VA   —     665   9,273   39   665   9,312   —     —     9,977   2,173   1997   (1)

92-100 Hayden Avenue

  Office   Lexington, MA   —     594   6,748   2,461   594   9,209   —     —     9,803   5,432   1985   (1)

91 Hartwell Avenue

  Office   Lexington, MA   16,369   784   6,464   2,443   784   8,907   —     —     9,691   4,573   1985   (1)

195 West Street

  Office   Waltham, MA   —     1,611   6,652   953   1,611   7,605   —     —     9,216   3,573   1990   (1)

33 Hayden Avenue

  Office   Lexington, MA   —     266   3,234   5,291   266   8,525   —     —     8,791   3,489   1979   (1)

Waltham Office Center

  Office   Waltham, MA   —     422   2,719   5,294   425   8,010   —     —     8,435   4,948   1968-1970/
87-88
  (1)

Eleven Cambridge Center

  Office   Cambridge, MA   —     121   5,535   2,237   121   7,772   —     —     7,893   4,528   1984   (1)

8000 Grainger Court, Building Five

  Office   Springfield, VA   —     366   4,282   2,292   453   6,487   —     —     6,940   3,319   1984   (1)

7450 Boston Boulevard, Building Three

  Office   Springfield, VA   —     1,165   4,681   797   1,327   5,316   —     —     6,643   1,557   1987   (1)

7435 Boston Boulevard, Building One

  Office   Springfield, VA   —     392   3,822   2,215   486   5,943   —     —     6,429   3,485   1982   (1)

7300 Boston Boulevard, Building Thirteen

  Office   Springfield, VA   —     608   4,773   —     608   4,773   —     —     5,381   1,467   2002   (1)

32 Hartwell Avenue

  Office   Lexington, MA   —     168   1,943   3,189   168   5,132   —     —     5,300   4,875   1968-
1979/1987
  (1)

7601 Boston Boulevard, Building Eight

  Office   Springfield, VA   —     200   878   4,169   378   4,869   —     —     5,247   2,447   1986   (1)

Fourteen Cambridge Center

  Office   Cambridge, MA   —     110   4,483   569   110   5,052   —     —     5,162   2,825   1983   (1)

7500 Boston Boulevard, Building Six

  Office   Springfield, VA   —     138   3,749   1,204   273   4,818   —     —     5,091   2,618   1985   (1)

8000 Corporate Court, Building Eleven

  Office   Springfield, VA   —     136   3,071   593   687   3,113   —     —     3,800   1,497   1989   (1)

7375 Boston Boulevard, Building Ten

  Office   Springfield, VA   —     23   2,685   755   47   3,416   —     —     3,463   1,650   1988   (1)

7451 Boston Boulevard, Building Two

  Office   Springfield, VA   —     249   1,542   1,000   535   2,256   —     —     2,791   1,490   1982   (1)

7374 Boston Boulevard, Building Four

  Office   Springfield, VA   —     241   1,605   942   303   2,485   —     —     2,788   1,260   1984   (1)

164 Lexington Road

  Office   Billerica, MA   —     592   1,370   212   592   1,582   —     —     2,174   477   1982   (1)

17 Hartwell Avenue

  Office   Lexington, MA   —     26   150   652   26   802   —     —     828   779   1968   (1)

Long Wharf Marriott

  Hotel   Boston, MA   —     1,708   31,904   24,660   1,708   56,564   —     —     58,272   27,830   1982   (1)

Cambridge Center Marriott

  Hotel   Cambridge, MA   —     478   37,918   19,758   478   57,676   —     —     58,154   24,853   1986   (1)

Cambridge Center East Garage

  Garage   Cambridge, MA   —     —     35,035   —     —     35,035   —     —     35,035   73   1984   (1)

Cambridge Center West Garage

  Garage   Cambridge, MA   —     1,256   15,697   —     1,256   15,697   —     —     16,953   483   2006   (1)

Cambridge Center North Garage

  Garage   Cambridge, MA   —     1,163   11,633   773   1,163   12,406   —     —     13,569   5,272   1990   (1)

 

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Property Name

  Type  

Location

  Encumbrances   Original   Costs
Capitalized
Subsequent
to
Acquisition
 

Land and
Improve-

ments

 

Building
and
Improve-

ments

 

Land
Held for

Develop-

ment

 

Develop-

ment and
Construction

in Progress

  Total   Accumulated
Depreciation
 

Year(s)

Built/
Renovated

  Depreciable
Lives
(Years)
        Land   Building                  

Five Times Square

  Held for Sale   New York, NY     —       158,530     288,589     4,065     156,365     294,819     —       —       451,184     40,324   2002   (1)

South of Market

  Development   Reston, VA     11,490     —       —       54,568     —       —       —       54,568     54,568     —     Various   N/A

77 4th Avenue

  Development   Waltham, MA     —       —       —       22,472     —       —       —       22,472     22,472     —     Various   N/A

One Preserve Parkway

  Development   Rockville, MD     —       —       —       8,355     —       —       —       8,355     8,355     —     Various   N/A

Wisconsin Place

  Development   Chevy Chase, MD     —       —       —       2,366     —       —       —       2,366     2,366     —     Various   N/A

Plaza at Almaden

  Land   San Jose, CA     —       —       —       32,401     —       —       32,401     —       32,401     —     Various   N/A

Tower Oaks Master Plan

  Land   Rockville, MD     —       —       —       28,635     —       —       28,635     —       28,635     —     Various   N/A

Weston Corporate Center

  Land   Weston, MA     —       —       —       23,488     —       —       23,488     —       23,488     —     Various   N/A

Prospect Hill

  Land   Waltham, MA     —       —       —       22,693     —       —       22,693     —       22,693     —     Various   N/A

New York City Land

  Land   New York, NY     —       —       —       21,505     —       —       —       21,505     21,505     —     Various   N/A

Washingtonian North

  Land   Gaithersburg, MD     —       —       —       17,580     —       —       17,580     —       17,580     —     Various   N/A

Reston Gateway

  Land   Reston, VA     —       —       —       9,166     —       —       9,166     —       9,166     —     Various   N/A

Reston Eastgate

  Land   Reston, VA     —       —       —       9,115     —       —       9,115     —       9,115     —     Various   N/A

Crane Meadow

  Land   Marlborough, MA     —       —       —       8,695     —       —       8,695     —       8,695     —     Various   N/A

Broad Run Business Park

  Land   Loudon County, VA     —       —       —       7,287     —       —       7,287     —       7,287     —     Various   N/A

20 F Street

  Land   Washington, DC     —       —       —       4,833     —       —       4,833     —       4,833     —     Various   N/A

Cambridge Master Plan

  Land   Cambridge, MA     —       —       —       3,649     —       —       1,444     2,205     3,649     —     Various   N/A

30 Shattuck Road

  Land   Andover, MA     —       —       —       1,135     —       —       1,135     —       1,135     —     Various   N/A
                                                                   
      $ 2,679,462   $ 1,777,516   $ 6,134,491   $ 1,314,704   $ 1,818,188   $ 7,113,396   $ 179,498   $ 115,629   $ 9,226,711   $ 1,406,407    
                                                                   

The aggregate cost and accumulated depreciation for tax purposes was approximately $8.6 billion and $1.5 billion, respectively.

(1) Depreciation of the buildings and improvements are calculated over lives ranging from the life of the lease to 40 years.

 

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Boston Properties Limited Partnership

Real Estate and Accumulated Depreciation

December 31, 2006

(dollars in thousands)

A summary of activity for real estate and accumulated depreciation is as follows:

 

     2006     2005     2004  

Real Estate:

      

Balance at the beginning of the year

   $ 8,977,413     $ 9,137,354     $ 8,853,760  

Additions to/improvements of real estate

     678,667       413,370       399,096  

Assets sold/written-off

     (429,369 )     (573,311 )     (115,502 )
                        

Balance at the end of the year

   $ 9,226,711     $ 8,977,413     $ 9,137,354  
                        

Accumulated Depreciation:

      

Balance at the beginning of the year

   $ 1,244,031     $ 1,119,215     $ 956,665  

Depreciation expense

     232,732       229,143       220,417  

Assets sold/written-off

     (70,356 )     (104,327 )     (57,867 )
                        

Balance at the end of the year

   $ 1,406,407     $ 1,244,031     $ 1,119,215  
                        

Note: Real Estate and Accumulated Depreciation amounts do not include Furniture, Fixtures and Equipment.

 

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Table of Contents

(b) Exhibits

 

3.1    Form of Amended and Restated Certificate of Incorporation of Boston Properties, Inc. (Incorporated by reference to Exhibit 3.1 to Boston Properties, Inc.’s Registration Statement on Form S-11, File No. 333-25279.)
3.2    Form of Amended and Restated Bylaws of Boston Properties, Inc. (Incorporated by reference to Exhibit 3.2 to Boston Properties, Inc.’s Registration Statement on Form S-11, File No. 333-25279.)
3.3    Amendment No. 1 to Amended and Restated Bylaws of Boston Properties, Inc. (Incorporated by reference to Exhibit 3.3 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on March 24, 2000.)
3.4    Amendment No. 2 to Amended and Restated Bylaws of Boston Properties, Inc. (Incorporated by reference to Exhibit 3.4 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 26, 2004.)
4.1    Form of Shareholder Rights Agreement, dated as of June 16, 1997, between Boston Properties, Inc. and Bank of America (f.k.a. Fleet National Bank, f.k.a. BankBoston N.A.), as Rights Agent. (Incorporated by reference to Exhibit 4.1 to Boston Properties, Inc.’s Registration Statement on Form S-11, File No. 333-25279.)
4.2    Form of Certificate of Designations for Series E Junior Participating Cumulative Preferred Stock, par value $.01 per share. (Incorporated by reference to Exhibit 4.2 to Boston Properties, Inc.’s Registration Statement on Form S-11, File No. 333-25279.)
4.3    Form of Certificate of Designations for Series A Preferred Stock. (Incorporated by reference to Exhibit 99.26 to Boston Properties, Inc.’s Current Report on Form 8-K filed on November 25, 1998.)
4.4    Form of Common Stock Certificate. (Incorporated by reference to Exhibit 4.3 to Boston Properties, Inc.’s Registration Statement on Form S-11., File No. 333-25279.)
4.5    Indenture, dated as of December 13, 2002, by and between Boston Properties Limited Partnership and The Bank of New York, as Trustee. (Incorporated by reference to Exhibit 4.1 to Boston Properties, Inc.’s Current Report on Form 8-K/A filed on December 13, 2002.)
4.6    Supplemental Indenture No. 1, dated as of December 13, 2002, by and between Boston Properties Limited Partnership and The Bank of New York, as Trustee, including a form of the 6.25% Senior Note due 2013. (Incorporated by reference to Exhibit 4.2 to Boston Properties, Inc.’s Current Report on Form 8-K/A filed on December 13, 2002.)
4.7    Supplemental Indenture No. 2, dated as of January 17, 2003, by and between Boston Properties Limited Partnership and The Bank of New York, as Trustee, including a form of the 6.25% Senior Note due 2013. (Incorporated by reference to Exhibit 4.1 to Boston Properties, Inc.’s Current Report on Form 8-K filed on January 23, 2003.)
4.8    Supplemental Indenture No. 3, dated as of March 18, 2003, by and between Boston Properties Limited Partnership and The Bank of New York, as Trustee, including a form of the 5.625% Senior Note due 2015. (Incorporated by reference to Exhibit 4.6 to Boston Properties Limited Partnership’s Amendment No. 3 to Form 10 filed on May 13, 2003.)
4.9    Supplemental Indenture No. 4, dated as of May 22, 2003, by and between Boston Properties Limited Partnership and The Bank of New York, as Trustee, including a form of the 5.00% Senior Note due 2015. (Incorporated by reference to Exhibit 4.2 to Boston Properties Limited Partnership’s Form S-4 filed on June 13, 2003, File No. 333-106127.)
4.10    Supplemental Indenture No. 5, dated as of April 6, 2006, by and between Boston Properties Limited Partnership and The Bank of New York Trust Company, N.A., as Trustee, including a form of the 3.75% Exchangeable Senior Note due 2036. (Incorporated by reference to Exhibit 4.1 to Boston Properties, Inc.’s Quarterly Report on Form 10-Q filed on May 10, 2006.)

 

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4.11    Supplemental Indenture No. 6, dated February 6, 2007, by and between Boston Properties Limited Partnership and The Bank of New York Trust Company, N.A., as Trustee, including a form of the 2.875% Exchangeable Senior Note due 2037. (Incorporated by reference to Exhibit 4.1 to Current Report on Form 8-K of Boston Properties Limited Partnership filed on February 6, 2007.)
4.12    Registration Rights Agreement, dated as of February 6, 2007, among Boston Properties Limited Partnership, Boston Properties, Inc., JP Morgan Securities Inc. and Morgan Stanley & Co. Incorporated. (Incorporated by reference to Exhibit 4.3 to the Current Report on Form 8-K of Boston Properties Limited Partnership filed on February 6, 2007.)
10.1    Second Amended and Restated Agreement of Limited Partnership of Boston Properties Limited Partnership, dated as of June 29, 1998. (Incorporated by reference to Exhibit 99.1 to Boston Properties, Inc.’s Current Report on Form 8-K filed on July 15, 1998.)
10.2    Certificate of Designations for the Series Two Preferred Units, dated November 12, 1998, constituting an amendment to the Second Amended and Restated Agreement of Limited Partnership of Boston Properties Limited Partnership. (Incorporated by reference to Exhibit 99.24 to Boston Properties, Inc.’s Current Report on Form 8-K filed on November 25, 1998.)
10.3*    Forty-Seventh Amendment to the Second Amended and Restated Agreement of Limited Partnership of Boston Properties Limited Partnership, dated as of April 11, 2003, by Boston Properties, Inc., as general partner. (Incorporated by reference to Exhibit 10.1 to Boston Properties, Inc.’s Quarterly Report on Form 10-Q filed on August 14, 2003.)
10.4*    Amended and Restated 1997 Stock Option and Incentive Plan, dated May 3, 2000, and forms of option agreements. (Incorporated by reference to Exhibit 10.6 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on March 30, 2001.)
10.5*    Amendment No. 1 to Amended and Restated 1997 Stock Option and Incentive Plan as amended and restated dated November 14, 2000. (Incorporated by reference to Exhibit 10.7 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on March 30, 2001.)
10.6*    Amendment No. 2 to Amended and Restated 1997 Stock Option and Incentive Plan as amended and restated, dated March 4, 2003. (Incorporated by reference to Exhibit 10.1 to Boston Properties, Inc.’s Quarterly Report on Form 10-Q filed on May 14, 2003.)
10.7*    Amendment No. 3 to Amended and Restated 1997 Stock Option and Incentive Plan as amended and restated dated October 16, 2003. (Incorporated by reference to Exhibit 10.67 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 26, 2004.)
10.8*    Amendment No. 4 to Amended and Restated 1997 Stock Option and Incentive Plan as amended and restated dated March 30, 2005. (Incorporated by reference to Exhibit 10.1 to Boston Properties, Inc.’s Quarterly Report of Form 10-Q filed on May 10, 2005.)
10.9*    Amendment No. 5 to the Boston Properties, Inc. 1997 Stock Option and Incentive Plan, as amended and restated dated on July 20, 2006. (Incorporated by reference to Exhibit 10.1 to Boston Properties, Inc.’s Quarterly Report on Form 10-Q filed on August 9, 2006.)
10.10*    Boston Properties, Inc. 1999 Non-Qualified Employee Stock Purchase Plan. (Incorporated by reference to Exhibit 10.59 to Boston Properties, Inc.’s Annual Report of Form 10-K filed on March 15, 2005.)
10.11*    First Amendment to the Boston Properties, Inc. 1999 Non-Qualified Employee Stock Purchase Plan. (Incorporated by reference to Exhibit 10.60 to Boston Properties, Inc.’s Annual Report of Form 10-K filed on March 15, 2005.)
10.12*    Second Amendment to the Boston Properties, Inc. 1999 Non-Qualified Employee Stock Purchase Plan. (Incorporated by reference to Exhibit 10.61 to Boston Properties, Inc.’s Annual Report of Form 10-K filed on March 15, 2005.)

 

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10.13*    Form of Employee Long Term Incentive Unit Vesting Agreement under the Boston Properties, Inc. Amended and Restated 1997 Stock Option and Incentive Plan. (Incorporated by reference to Exhibit 10.68 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 26, 2004.)
10.14*    Form of Long Term Incentive Plan Unit Vesting Agreement between each of Messrs. Mortimer B. Zuckerman and Edward H. Linde and Boston Properties, Inc. and Boston Properties Limited Partnership. (Incorporated by reference to Exhibit 10.69 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 26, 2004.)
10.15*    Form of Director Long Term Incentive Plan Unit Vesting Agreement under the Boston Properties, Inc. Amended and Restated 1997 Stock Option and Incentive Plan. (Incorporated by reference to Exhibit 10.2 to Boston Properties, Inc.’s Quarterly Report on Form 10-Q filed on August 14, 2003.)
10.16*    Form of Employee Restricted Stock Award Agreement under the Boston Properties, Inc. 1997 Stock Option and Incentive Plan. (Incorporated by reference to Exhibit 10.1 to Boston Properties, Inc.’s Quarterly Report on Form 10-Q filed on November 9, 2004.)
10.17*    Form of Director Restricted Stock Award Agreement under the Boston Properties, Inc. Amended and Restated 1997 Stock Option and Incentive Plan. (Incorporated by reference to Exhibit 10.2 to Boston Properties, Inc.’s Quarterly Report on Form 10-Q filed on November 9, 2004.)
10.18*    Boston Properties Deferred Compensation Plan effective, March 1, 2002. (Incorporated by reference to Exhibit 10.1 to Boston Properties, Inc.’s Quarterly Report on Form 10-Q filed on May 15, 2002.)
10.19*    Employment Agreement by and between Mortimer B. Zuckerman and Boston Properties, Inc. dated as of January 17, 2003. (Incorporated by reference to Exhibit 10.7 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 27, 2003.)
10.20*    Amended and Restated Employment Agreement by and between Edward H. Linde and Boston Properties, Inc. dated as of November 29, 2002. (Incorporated by reference to Exhibit 10.8 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 27, 2003.)
10.21*    Employment Agreement by and between Peter D. Johnston and Boston Properties, Inc. dated as of August 25, 2005. (Incorporated by reference to Exhibit 10.2 to Boston Properties, Inc.’s Quarterly Report of Form 10-Q filed on November 9, 2005.)
10.22*    Employment Agreement by and between Bryan J. Koop and Boston Properties, Inc. dated as of November 29, 2002. (Incorporated by reference to Exhibit 10.10 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 27, 2003.)
10.23*    Employment Agreement by and between Mitchell S. Landis and Boston Properties, Inc. dated as of November 26, 2002. (Incorporated by reference to Exhibit 10.11 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 27, 2003.)
10.24*    Employment Agreement by and between Douglas T. Linde and Boston Properties, Inc. dated as of November 29, 2002. (Incorporated by reference to Exhibit 10.12 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 27, 2003.)
10.25*    Amended and Restated Employment Agreement by and between E. Mitchell Norville and Boston Properties, Inc. dated as of August 25, 2005. (Incorporated by reference to Exhibit 10.1 to Boston Properties, Inc.’s Quarterly Report of Form 10-Q filed on November 9, 2005.)
10.26*    Employment Agreement by and between Robert E. Pester and Boston Properties, Inc. dated as of December 16, 2002. (Incorporated by reference to Exhibit 10.14 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 27, 2003.)
10.27*    Amended and Restated Employment Agreement by and between Raymond A. Ritchey and Boston Properties, Inc. dated as of November 29, 2002. (Incorporated by reference to Exhibit 10.15 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 27, 2003.)

 

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10.28*    Amended and Restated Employment Agreement by and between Robert E. Selsam and Boston Properties, Inc. dated as of November 29, 2002. (Incorporated by reference to Exhibit 10.16 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 27, 2003.)
10.29*    Compensation Agreement between Boston Properties, Inc. and Robert E. Selsam, dated as of August 10, 1995 relating to 90 Church Street. (Incorporated by reference to Exhibit 10.26 to Boston Properties, Inc.’s Registration Statement on Form S-11, File No. 333-25279.)
10.30*    Senior Executive Severance Agreement by and among Boston Properties, Inc., Boston Properties Limited Partnership and Mortimer B. Zuckerman. (Incorporated by reference to Exhibit 10.17 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 27, 2003.)
10.31*    Senior Executive Severance Agreement by and among Boston Properties, Inc., Boston Properties Limited Partnership and Edward H. Linde. (Incorporated by reference to Exhibit 10.18 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 27, 2003.)
10.32*    Boston Properties, Inc. Senior Executive Severance Plan. (Incorporated by reference to Exhibit 10.19 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 27, 2003.)
10.33*    Boston Properties, Inc. Executive Severance Plan. (Incorporated by reference to Exhibit 10.20 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on February 27, 2003.)
10.34*    Form of Indemnification Agreement by and among Boston Properties, Inc., Boston Properties Limited Partnership and certain officers and directors of Boston Properties, Inc. (Incorporated by reference to Exhibit 10.1 to Boston Properties, Inc.’s Quarterly Report on Form 10-Q filed on August 9, 2004.)
10.35*    Omnibus Option Agreement by and among Boston Properties Limited Partnership and the Grantors named therein, dated as of April 9, 1997. (Incorporated by reference to Exhibit 10.6 to Boston Properties, Inc.’s Registration Statement on Form S-11, File No. 333-25279.)
10.36    Fourth Amended and Restated Revolving Credit Agreement, dated as of May 19, 2005, among Boston Properties Limited Partnership and the banks identified therein and Bank of America, N.A. as administrative agent, swingline lender and fronting bank, JPMorgan Chase Bank, N.A. as syndication agent, and Commerzbank AG, Keybank National Association and Wells Fargo Bank National Association as documentation agents, with Banc of America Securities LLC and J.P. Morgan Securities, Inc. acting as joint lead arrangers and joint bookrunners. (Incorporated by reference to Exhibit 10.1 to Boston Properties, Inc.’s Current Report on Form 8-K filed on May 23, 2005.)
10.37    Fifth Amended and Restated Revolving Credit Agreement, dated as of August 3, 2006, among Boston Properties Limited Partnership and the banks identified therein and Bank of America, N.A. as administrative agent, swingline lender and fronting bank, JPMorgan Chase Bank, N.A. as syndication agent, and Eurohypo AG-New York Branch, Keybank National Association, Wells Fargo Bank National Association as documentation agents, with The Bank of New York, Citicorp North America, Inc., Citizens Bank of Massachusetts, Deutsche Bank Trust Company, PNC Bank-National Association as co-managing agents and J.P. Morgan Securities Inc. and Banc of America Securities LLC acting as joint lead arrangers and joint bookrunners. (Incorporated by reference to Exhibit 10.2 to Boston Properties, Inc.’s Quarterly Report on Form 10-Q filed on August 9, 2006.)
10.38    Contribution and Conveyance Agreement concerning the Carnegie Portfolio, dated June 30, 1998, by and among Boston Properties, Inc., Boston Properties Limited Partnership, and the parties named therein as Landis Parties. (Incorporated by reference to Exhibit 99.3 to Boston Properties, Inc.’s Current Report on Form 8-K filed on July 15, 1998.)
10.39    Contribution Agreement, dated June 30, 1998, by and among Boston Properties, Inc., Boston Properties Limited Partnership, and the parties named therein as Landis Parties. (Incorporated by reference to Exhibit 99.4 to Boston Properties, Inc.’s Current Report on Form 8-K filed on July 15, 1998.)

 

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10.40    Agreement, dated as of October 21, 2004, by and among Boston Properties Limited Partnership, Boston Properties, Inc., Alan B. Landis, The Landis Group, ABL Capital Corp. and Princeton Land Partners, L.L.C. (Incorporated by reference to Exhibit 99.1 to Boston Properties, Inc.’s Current Report on Form 8-K filed on October 25, 2004.)
10.41    Development Agreement, dated as of June 30, 1998, by and among Boston Properties Limited Partnership, ABL Capital Corp. and Princeton Land Partners, L.L.C. (Incorporated by reference to Exhibit 99.2 to Boston Properties, Inc.’s Current Report on Form 8-K filed on October 25, 2004.)
10.42    First Amendment to Development Agreement, dated as of October 21, 2004, by and among Boston Properties Limited Partnership, ABL Capital Corp. and Princeton Land Partners, L.L.C. (Incorporated by reference to Exhibit 99.3 to Boston Properties, Inc.’s Current Report on Form 8-K filed on October 25, 2004.)
10.43    Contribution Agreement, dated as of November 12, 1998, by and among Boston Properties, Inc., Boston Properties Limited Partnership, Embarcadero Center Investors Partnership and the partners in Embarcadero Center Investors Partnership listed on Exhibit A thereto. (Incorporated by reference to Exhibit 99.2 to Boston Properties, Inc.’s Current Report on Form 8-K filed on November 25, 1998.)
10.44    Master Agreement by and between New York State Common Retirement Fund and Boston Properties Limited Partnership, dated as of May 12, 2000. (Incorporated by reference to Exhibit 10.54 to Boston Properties, Inc.’s Annual Report on Form 10-K filed on March 30, 2001.)
10.45    Purchase and Sale Agreement between BP 280 Park Avenue LLC and Istithmar Building FZE dated April 26, 2006. (Incorporated by reference to Exhibit 10.1 to Boston Properties, Inc.’s Quarterly Report on Form 10-Q filed on May 10, 2006.)
10.46    Purchase and Sale Agreement, dated as of November 17, 2006, between No. 5 Times Square Development LLC and AVR Crossroads LLC. (Incorporated by reference to Exhibit 2.1 to Boston Properties, Inc.’s Current Report on Form 8-K filed on February 16, 2007.)
10.47    Amendment to Purchase and Sale Agreement, dated as of February 15, 2007, between No. 5 Times Square Development LLC and AVR Crossroads LLC. (Incorporated by reference to Exhibit 2.2 to Boston Properties, Inc.’s Current Report on Form 8-K filed on February 16, 2007.)
10.48    ESAC Receivable Sale Agreement, dated as of November 17, 2006, between No. 5 Times Square Development LLC and AVR Crossroads LLC. (Incorporated by reference to Exhibit 2.3 to Boston Properties, Inc.’s Current Report on Form 8-K filed on February 16, 2007.)
10.49    Amendment to ESAC Receivable Sale Agreement, dated as of February 15, 2007, between No. 5 Times Square Development LLC and AVR Crossroads LLC. (Incorporated by reference to Exhibit 2.4 to Boston Properties, Inc.’s Current Report on Form 8-K filed on February 16, 2007.)
10.50    Purchase Agreement, dated as of January 31, 2007 among Boston Properties Limited Partnership, Boston Properties, Inc. (solely for purposes of Section 4(k), 4(p) and 5(k) therein), JP Morgan Securities Inc. and Morgan Stanley & Company Incorporated. (Incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K of Boston Properties Limited Partnership filed on February 6, 2007.)
12.1    Statement re Computation of Ratios. (Filed herewith.)
21.1    Subsidiaries of Boston Properties Limited Partnership. (Filed herewith.)
23.1    Consent of PricewaterhouseCoopers LLP, Independent Registered Public Accounting firm. (Filed herewith.)
31.1    Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. (Filed herewith.)
31.2    Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. (Filed herewith.)
32.1    Section 1350 Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. (Furnished herewith.)
32.2    Section 1350 Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. (Furnished herewith.)

* Indicates management contract or compensatory plan or arrangement required to be filed or incorporated by reference as an exhibit to this Form 10-K pursuant to Item 15(b) of Form 10-K.

 

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Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant, has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 

  BOSTON PROPERTIES LIMITED PARTNERSHIP
 

By: Boston Properties, Inc., its General Partner

Date

 

March 1, 2007

 
  By:  

/s/    DOUGLAS T. LINDE        

    Douglas T. Linde
    Executive Vice President, Chief Financial Officer
    (duly authorized officer and principal financial officer)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of Boston Properties, Inc., as general partner of the Registrant, and in the capacities and on the dates indicated.

 

March1, 2007

 
 

By:

  /s/    MORTIMER B. ZUCKERMAN        
      Mortimer B. Zuckerman
    Chairman of the Board of Directors

 

 

By:

  /s/    EDWARD H. LINDE        
      Edward H. Linde
    Director, President and Chief Executive Officer

 

 

By:

  /s/    LAWRENCE S. BACOW        
      Lawrence S. Bacow
    Director

 

 

By:

  /s/    Z BAIRD        
      Zoë Baird
    Director

 

 

By:

  /s/    WILLIAM M. DALEY        
      William M. Daley
    Director

 

 

By:

  /s/    CAROL B. EINIGER        
      Carol B. Einiger
    Director

 

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Table of Contents
   

By:

  /s/    ALAN J. PATRICOF        
      Alan J. Patricof
    Director

 

 

By:

  /s/    RICHARD E. SALOMON        
      Richard E. Salomon
    Director

 

 

By:

  /s/    MARTIN TURCHIN        
      Martin Turchin
    Director

 

 

By:

  /s/    DAVID A. TWARDOCK        
      David A. Twardock
    Director

 

 

By:

  /s/    DOUGLAS T. LINDE        
      Douglas T. Linde
   

Executive Vice President, Chief Financial Officer

and Principal Financial Officer

 

 

By:

  /s/    ARTHUR S. FLASHMAN        
      Arthur S. Flashman
    Vice President, Controller and Principal Accounting Officer

 

147

CALCULATION OF RATIOS OF EARNINIGS

EXHIBIT 12.1

BOSTON PROPERTIES LIMITED PARTNERSHIP

CALCULATION OF RATIOS OF EARNINGS TO COMBIND FIXED

CHARGES AND PREFERRED DISTRIBUTIONS

Boston Properties Limited Partnership's ratios of earnings to combined fixed charges and preferred distributions for the five years ended December 31, 2006 were as follows:

 

     Year Ended December 31,  
     2006     2005     2004     2003     2002  
     (dollars in thousands)  

Earnings:

          

Add:

          

Income before minority interests in property partnerships, income from unconsolidated joint ventures, gains on sales of real estate and other assets, discontinued operations, cumulative effect of a change in accounting principle and preferred distributions and allocation of undistributed earnings

   $ 317,848     $ 306,971     $ 306,589     $ 289,575     $ 264,425  

Gains on sales of real estate and other assets

     727,131       188,546       9,822       70,627       233,304  

Amortization of interest capitalized

     3,387       3,298       2,845       2,640       2,526  

Distributions from unconsolidated joint ventures

     8,206       7,179       6,663       8,412       8,692  

Combined fixed charges and preferred distributions (see below)

     326,995       340,589       334,082       342,244       316,835  

Subtract:

          

Interest capitalized

     (5,921 )     (5,718 )     (10,849 )     (19,200 )     (22,510 )

Preferred distributions

     (22,814 )     (26,780 )     (17,063 )     (23,608 )     (31,258 )
                                        

Total earnings

   $ 1,354,832     $ 814,085     $ 632,089     $ 670,690     $ 772,014  
                                        

Combined fixed charges and preferred distributions:

          

Interest expensed

   $ 298,260     $ 308,091     $ 306,170     $ 299,436     $ 263,067  

Interest capitalized

     5,921       5,718       10,849       19,200       22,510  

Preferred distributions

     22,814       26,780       17,063       23,608       31,258  
                                        

Total combined fixed charges and preferred distributions

   $ 326,995     $ 340,589     $ 334,082     $ 342,244     $ 316,835  
                                        

Ratio of earnings to combined fixed charges and preferred distributions

     4.14       2.39       1.89       1.96       2.44  
                                        

The ratio of earnings to combined fixed charges and preferred distributions was computed by dividing earnings by combined fixed charges and preferred distributions. Earnings consist of income before minority interests in property partnerships, income from unconsolidated joint ventures, discontinued operations, cumulative effect of a change in accounting principle and preferred distributions and allocation of undistributed earnings, plus amortization of interest capitalized, distributions from unconsolidated joint ventures, and combined fixed charges and preferred distributions, minus interest capitalized and preferred distributions. Combined fixed charges and preferred distributions consist of interest expensed, which includes credit enhancement fees and amortization of loan costs, interest capitalized, and preferred distributions.

SUBSIDIARIES

EXHIBIT 21.1

 

Subsidiary

  

State of

Organization

101 Carnegie Center Associates

   New Jersey

17M Associates

   District of Columbia

191 Spring Street Trust

   Massachusetts

206 Associates Limited Partnership

   New Jersey

210 Associates Limited Partnership

   New Jersey

211 Associates Limited Partnership

   New Jersey

30 Shattuck Road LLC

   Delaware

40-46 Harvard Street Trust

   Massachusetts

90 Church Street Limited Partnership

   Delaware

91 Hartwell Avenue Trust

   Massachusetts

92 Hayden Avenue Trust

   Massachusetts

Big Apple Associates Limited Partnership

   Delaware

Billerica Road LLC

   Delaware

Billerica Road Member LLC

   Delaware

Boston Properties LLC

   Delaware

Boston Properties Management, Inc.

   Delaware

Boston Properties Office Value-Added Fund, L.P.

   Delaware

Boston Properties TRS, Inc.

   Delaware

BP 111 Huntington Ave LLC

   Delaware

BP 1330 Connecticut Avenue LLC

   Delaware

BP 1333 New Hampshire Avenue LLC

   Delaware

BP 140 Kendrick Street LLC

   Delaware

BP 140 Kendrick Street Property LLC

   Delaware

BP 20 F Street Limited Partnership

   Delaware

BP 201 Spring Street LLC

   Delaware

BP 280 Park Avenue LLC

   Delaware

BP 280 Park Avenue Manager Corp.

   Delaware

BP 280 Park Avenue Mezzanine LLC

   Delaware

BP 303 Almaden Associates LLC

   Delaware

BP 399 Park Avenue LLC

   Delaware

BP 8th Avenue Associates LLC

   Delaware

BP 99 Third Avenue LLC

   Delaware

BP Almaden Associates LLC

   Delaware

BP Belvidere LLC

   Delaware

BP Crane Meadow, L.L.C.

   Delaware

BP East Garage LLC

   Delaware

BP EC1 Holdings LLC

   Delaware

BP EC2 Holdings LLC

   Delaware

BP EC3 Holdings LLC

   Delaware

BP EC4 Holdings LLC

   Delaware

BP Five CC LLC

   Delaware

BP Four CC LLC

   Delaware

BP Fourth Avenue, L.L.C.

   Delaware

BP Gateway Center LLC

   Delaware

BP Hotel LLC

   Delaware

BP II LLC

   Delaware

BP III LLC

   Delaware

BP Lex LLC

   Delaware

BP Management, L.P.

   Delaware

BP New Dominion Technology Office Park II, LLC

   Delaware


Subsidiary

  

State of

Organization

BP New York TRS LLC

   Delaware

BP Office Fund REIT, Inc.

   Maryland

BP Office Value-Added LLC

   Delaware

BP Prospect Place LLC

   Delaware

BP Prucenter Acquisition LLC

   Delaware

BP Prucenter Development LLC

   Delaware

BP Prucenter Fairfield LLC

   Delaware

BP Realty New Jersey LLC

   New Jersey

BP Reston Eastgate LLC

   Delaware

BP Seven Cambridge Center LLC

   Delaware

BP Supermarket LLC

   Delaware

BP Third Avenue LLC

   Delaware

BP Times Square Tower Mezzanine LLC

   Delaware

BP Weston Quarry LLC

   Delaware

BP Zanker Road LLC

   Delaware

BP/CG Member I LLC

   Delaware

BP/CG Member II LLC

   Delaware

BP/CG Member III LLC

   Delaware

BP/CGCenter Acquisition Co. LLC

   Delaware

BP/CGCenter I LLC

   Delaware

BP/CGCenter II LLC

   Delaware

BP/CGCenter MM LLC

   Delaware

BP/CGCenter MM2 LLC

   Delaware

BP/CRF 265 Franklin Street Holdings LLC

   Delaware

BP/CRF 265 Franklin Street LLC

   Delaware

BP/CRF 265 Franklin Street Manager Corp.

   Delaware

BP/CRF 265 Franklin Street Mezzanine LLC

   Delaware

BP/CRF 901 New York Avenue LLC

   Delaware

BP/DC Properties, Inc.

   Maryland

BP/DC REIT LLC

   Delaware

Cambridge Center North Trust

   Massachusetts

Cambridge Center West Associates Limited Partnership

   Massachusetts

Cambridge Center West Garage LLC

   Delaware

Cambridge Center West Trust

   Massachusetts

Carnegie 214 Associates Limited Partnership

   New Jersey

Carnegie 504 Associates

   New Jersey

Carnegie 506 Associates

   New Jersey

Carnegie 508 Associates

   New Jersey

Carnegie 510 Associates, L.L.C.

   Delaware

Carnegie Center Associates

   New Jersey

Circle Star LLC

   Delaware

CRF Met Square LLC

   Delaware

Democracy Associates Limited Partnership

   Maryland

Democracy Financing, LLC

   Delaware

Discovery Square, L.L.C.

   Delaware

Downtown Boston Properties Trust

   Massachusetts

Elandzee Trust

   Massachusetts

Eleven Cambridge Center Trust

   Massachusetts

Embarcadero Center Associates

   California

Embarcadero Center, Inc.

   California

Four Embarcadero Center Venture

   California

Fourteen Cambridge Center Trust

   Massachusetts


Subsidiary

  

State of

Organization

Gateway Center LLC

   Delaware

Gladden Properties LLC

   Delaware

Gladden Properties I LLC

   Delaware

Gladden Properties II LLC

   Delaware

Hayden Office Trust

   Massachusetts

IXP, LLC

   Vermont

Jones Road Development Associates LLC

   Delaware

KEG I Associates, LLC

   Delaware

Lexreal Associates Limited Partnership

   New York

LKE BP Fourth Avenue Limited Partnership

   Massachusetts

Mall Road Trust

   Massachusetts

Market Square North Associates Limited Partnership

   Delaware

MBZ-Lex Trust

   Massachusetts

MGA Virginia 85-1 Limited Partnership

   Virginia

MGA Virginia 86-1 Limited Partnership

   Virginia

MGA Virginia 86-2 Limited Partnership

   Virginia

Montgomery Village Avenue Joint Venture Limited Partnership

   Maryland

New Dominion Technology Corp.

   Delaware

New Dominion Technology Park II LLC

   Delaware

New Dominion Technology Park LLC

   Delaware

No. 1 Times Square Development LLC

   Delaware

No. 5 Times Square Development LLC

   Delaware

Ocean View Development Company Limited Partnership

   District of Columbia

One Cambridge Center Trust

   Massachusetts

One Embarcadero Center Venture

   California

One Freedom Square, L.L.C.

   Delaware

Princeton 202 Associates Limited Partnership

   New Jersey

Princeton Childcare Associates Limited Partnership

   New Jersey

RBP 45th Associates LLC

   New York

Reston Corporate Center Limited Partnership

   Virginia

Reston Streets LLC

   Delaware

Reston Town Center Office Park Phase One Limited Partnership

   Virginia

Reston VA 939, L.L.C.

   Delaware

School Street Associates Limited Partnership

   District of Columbia

SCV Partners

   New Jersey

South of Market LLC

   Delaware

South of Market Garage LLC

   Delaware

Springfield Metro Center II, LLC

   Delaware

Square 407 Limited Partnership

   District of Columbia

Stony Brook Associates LLC

   Delaware

Ten Cambridge Center Trust

   Massachusetts

The Double B Partnership

   Massachusetts

The Double B Trust

   Massachusetts

The Metropolitan Square Associates LLC

   District of Columbia

Three Cambridge Center Trust

   Massachusetts

Three Embarcadero Center Venture

   California

Times Square Tower Associates LLC

   Delaware

Tower Oaks Financing LLC

   Delaware

Tracer Lane Trust II

   Massachusetts

Two Cambridge Center Trust

   Massachusetts

Two Freedom Square, L.L.C.

   Delaware

Washingtonian North Associates Limited Partnership

   Maryland


Subsidiary

  

State of

Organization

Wisconsin Place Office LLC

   Delaware

Wisconsin Place Office Manager LLC

   Delaware

Wisconsin Place Retail LLC

   Delaware

Worldgate Member LLC

   Delaware

Worldgate Plaza LLC

   Delaware

WP Borrower LLC

   Delaware

WP Trust

   Massachusetts

WP Project Developer LLC

   Delaware

Zee Bee Trust II

   Massachusetts

Zee Em Trust II

   Massachusetts
Consent of PricewaterhouseCoopers LLP

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (File Number 333-107792) and on Form S-8 (File Number 333-112109) of Boston Properties Limited Partnership of our report dated March 1, 2007 relating to the financial statements, financial statement schedule, management’s assessment of the effectiveness of internal control over financial reporting and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

Boston, Massachusetts

March 1, 2007

CERTIFICATION OF CEO PURSUANT TO SECTION 302

Exhibit 31.1

CERTIFICATION

I, Edward H. Linde, certify that:

1. I have reviewed this annual report on Form 10-K of Boston Properties Limited Partnership;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: March 1, 2007

 

/s/    EDWARD H. LINDE        

Edward H. Linde

Chief Executive Officer of Boston Properties, Inc., sole

general partner of Boston Properties Limited Partnership

CERTIFICATION OF CFO PURSUANT TO SECTION 302

Exhibit 31.2

CERTIFICATION

I, Douglas T. Linde, certify that:

1. I have reviewed this annual report on Form 10-K of Boston Properties Limited Partnership;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: March 1, 2007

 

/s/    DOUGLAS T. LINDE        

Douglas T. Linde

Chief Financial Officer of Boston Properties, Inc., sole

general partner of Boston Properties Limited Partnership

CERTIFICATION OF CEO PURSUANT TO SECTION 906

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned officer of Boston Properties, Inc., the sole general partner of Boston Properties Limited Partnership (the “Company”), hereby certifies to my knowledge that the Company’s annual report on Form 10-K for the period ended December 31, 2006 (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended, and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. This certification shall not be deemed “filed” for any purpose, nor shall it be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934 regardless of any general incorporation language in such filing.

Date: March 1, 2007

 

/s/    EDWARD H. LINDE        

Edward H. Linde

Chief Executive Officer of Boston Properties Inc., sole

general partner of Boston Properties Limited Partnership

CERTIFICATION OF CFO PURSUANT TO SECTION 906

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned officer of Boston Properties, Inc., the sole general partner of Boston Properties Limtied Partnership (the “Company”), hereby certifies to my knowledge that the Company’s annual report on Form 10-K for the period ended December 31, 2006 (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended, and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. This certification shall not be deemed “filed” for any purpose, nor shall it be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934 regardless of any general incorporation language in such filing.

Date: March 1, 2007

 

/s/    DOUGLAS T. LINDE        

Douglas T. Linde

Chief Financial Officer of Boston Properties, Inc., sole

general partner of Boston Properties Limited Partnership