News Release Details

BOSTON, Aug. 13 /PRNewswire-FirstCall/ -- Boston Properties, Inc. (NYSE: BXP), a real estate investment trust, announced today that it has completed the previously announced acquisition of 125 West 55th Street in New York City from an affiliate of Macklowe Properties. The purchase price for 125 West 55th Street was approximately $444.0 million, including the assumption of an aggregate principal amount of $263.5 million of secured and mezzanine loans having a weighted-average fixed interest rate of 6.31% per annum, all of which mature in March 2010.

The acquisition was completed through a joint venture among Boston Properties, US Real Estate Opportunities I, L.P., which is a partnership managed by Goldman Sachs, and Meraas Capital LLC, a Dubai-based private equity firm. Boston Properties has a 60% interest in the venture and will provide customary property management and leasing services for the venture. Boston Properties expects to account for its investment in the joint venture under the equity method of accounting rather than on a consolidated basis.

125 West 55th Street is a 23-story building, spanning from 55th to 56th Streets between Avenue of the Americas and Seventh Avenue, that contains approximately 591,000 rentable square feet.

This press release contains forward-looking statements within the meaning of the Federal securities laws. You can identify these statements by our use of the words "expects," "plans," "estimates," "projects," "intends," "believes" and similar expressions that do not relate to historical matters. You should exercise caution in interpreting and relying on forward-looking statements because they involve known and unknown risks, uncertainties and other factors which are, in some cases, beyond Boston Properties' control and could materially affect actual results, performance or achievements. These factors include, without limitation, the ability of our joint venture partners to satisfy their obligations, the ability to enter into new leases or renew leases on favorable terms, dependence on tenants' financial condition, the uncertainties of real estate development and acquisition activity, the ability to effectively integrate acquisitions, the costs and availability of financing, the effects of local economic and market conditions, the impact of newly adopted accounting principles on the Company's accounting policies and on period-to-period comparisons of financial results, regulatory changes and other risks and uncertainties detailed from time to time in the Company's filings with the Securities and Exchange Commission. Boston Properties does not undertake a duty to update or revise any forward-looking statement whether as a result of new information, future events or otherwise.

Boston Properties is a fully integrated, self-administered and self- managed real estate investment trust that develops, redevelops, acquires, manages, operates and owns a diverse portfolio consisting primarily of Class A office properties and one hotel. The Company is one of the largest owners and developers of Class A office properties in the United States, concentrated in five select markets - Boston, Midtown Manhattan, Washington, D.C., San Francisco, and Princeton, N.J. Visit the Company's web site at http://www.bostonproperties.com.

CONTACT:
At the company
Arista Joyner
Investor Relations Manager
+1-617-236-3343

Financial Relations Board
Marilynn Meek
General Information
+1-212-827-3773