1. Organization

Boston Properties, Inc. (the “Company”), a Delaware corporation, is a self-administered and self-managed real estate investment trust (“REIT”). The Company is the sole general partner of Boston Properties Limited Partnership (the “Operating Partnership”) and at June 30, 2009 owned an approximate 85.9% (84.1% at June 30, 2008) general and limited partnership interest in the Operating Partnership. Partnership interests in the Operating Partnership 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”). In addition, in February 2008, the Company issued LTIP Units in connection with the granting to employees of 2008 outperformance awards (also referred to as “2008 OPP Units”). Because the rights, preferences and privileges of 2008 OPP Units differ from other LTIP Units granted to employees as part of the annual compensation process, unless specifically noted otherwise, all references to LTIP Units exclude 2008 OPP Units.

Unless specifically noted otherwise, all references to OP Units exclude units held by the Company. A holder of an OP Unit may present such OP Unit to the Operating Partnership 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 Operating Partnership must redeem such OP Unit for cash equal to the then value of a share of common stock of the Company (“Common Stock”). In lieu of a cash redemption, the Company 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 the Company 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 the Company. 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 8).

At June 30, 2009, 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 Operating Partnership. Preferred Units may also be converted into OP Units or redeemed for cash at the election of the holder thereof or the Operating Partnership in accordance with the terms and conditions set forth in the applicable amendment to the partnership agreement (See Note 8).

All references herein to the Company refer to Boston Properties, Inc. and its consolidated subsidiaries, including the Operating Partnership, collectively, unless the context otherwise requires.

Properties

At June 30, 2009, the Company owned or had interests in a portfolio of 146 commercial real estate properties (compared to 147 and 142 properties at December 31, 2008 and June 30, 2008, respectively) (the “Properties”) aggregating approximately 49.1 million net rentable square feet (compared to approximately 49.8 million and 46.8 million net rentable square feet at December 31, 2008 and June 30, 2008, respectively), including seven properties under construction totaling approximately 2.3 million net rentable square feet, and structured parking for approximately 36,151 vehicles containing approximately 11.5 million square feet. At June 30, 2009, the Properties consist of:

The Company owns or controls undeveloped land parcels totaling approximately 509.3 acres. In addition, the Company has a noncontrolling 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 accounts for its investment in the Value-Added Fund using the equity method of accounting. The Company’s investments through the Value-Added Fund are not included in its portfolio information or any other portfolio level statistics. At June 30, 2009, the Value-Added Fund had investments in 26 buildings comprised of an office property in Chelmsford, Massachusetts and office complexes in San Carlos, California and Mountain View, California.

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.

3. Real Estate Activity During the Six Months Ended June 30, 2009

Development

On January 16, 2009, the Company acquired the development rights for the site at 17 Cambridge Center in Cambridge, Massachusetts for approximately $11.4 million.

On February 6, 2009, the Company announced that it was suspending construction on its 1,000,000 square foot office building at 250 West 55th Street in New York City. The Company intends to complete the construction of foundations and steel/deck to grade to facilitate a restart of construction in the future and therefore anticipates that most construction activity on this project will be completed by the end of the fourth quarter of 2009. During the six months ended June 30, 2009, the Company recognized aggregate costs of approximately $27.8 million related to the suspension of development.

On April 1, 2009, the Company placed in-service One Preserve Parkway, an approximately 184,000 net rentable square foot Class A office property located in Rockville, Maryland. The property is 20% leased.

On May 31, 2009, a consolidated joint venture in which the Company has a 66.67% interest placed in-service the Offices at Wisconsin Place, an approximately 299,000 net rentable square foot Class A office property located in Chevy Chase, Maryland. The property is 91% leased.

Dispositions

On April 14, 2008, the Company sold a parcel of land located in Washington, DC for approximately $33.7 million. The Company had previously entered into a development management agreement with the buyer to develop a Class A office property on the parcel totaling approximately 165,000 net rentable square feet. Due to the Company’s involvement in the construction of the project, the gain on sale had been deferred and is being recognized over the project construction period generally based on the percentage of total project costs incurred to estimated total project costs. As a result, the Company recognized a gain on sale during the six months ended June 30, 2009 of approximately $7.3 million. The Company has recognized a cumulative gain on sale of approximately $17.2 million.