Boston Properties Invests in Skyline Holdings, an Affiliate of Allied Partners, to Acquire

February 8, 2001

NEW YORK, Feb. 8 /PRNewswire/ -- Allied Partners and Boston Properties (NYSE: BXP) announced today that Boston Properties has acquired a significant interest in Skyline Holdings LLC, an affiliate of Allied Partners, whose principals are Eric and Richard Hadar. Skyline recently signed a contract to acquire Citigroup Center in from Dai-Ichi Life Investment Properties, Inc. Allied and Boston Properties are in the process of negotiating agreements to become 50/50 equity partners in the venture, following a preferred return to Boston Properties. The acquisition of Citigroup Center is expected to close in April 2001.

Citigroup Center is a 1.6 million square foot skyline building known for its distinctive cantilevered structure and angled top. The major tenants are Citigroup, O'Melveny & Myers, Kirkland & Ellis and AT Kearney, among other well-known tenants. Boston Properties owns three office properties in Midtown : 599 , 280 and 875 , and is building two towers in . The Company, along with a consortium, has also recently submitted a bid to purchase the net lease of the World Trade Center.

Allied Partners is a private family-owned real estate investment company founded in 1993. During the past seven years, it has acquired over two dozen properties valued in excess of $1.2 billion. Its Manhattan holdings include the former building at 254 West , 1 East , 50 West 40th Street, 285 Lafayette Street, 250 Church Street, 770 Lexington Avenue and 48 Wall Street.

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 of Class A office, industrial and hotel properties. The Company is one of the largest owners and developers of Class A office properties in the United States, concentrated in four core markets: Boston, Washington DC, and San Francisco.

This press release contains forward-looking statements within the meaning of the Federal securities laws. Forward-looking statements are inherently subject to risks and uncertainties, many of which cannot be predicted with accuracy. Acquisitions that are pursued by Boston Properties may not be consummated for a variety of reasons, including a failure to reach agreement with the selling party regarding the acquisition price or other terms of a contribution or acquisition agreement. Agreements that the Company enters into may be terminated for a variety of reasons, including a failure by the Company or the other party to fulfill all conditions required for consummation of the agreements. Accordingly, Boston Properties can give no assurances that the transaction contemplated by this release will be consummated on the terms described or at all. SOURCE Boston Properties

CONTACT: Elaine Quinlan of Boston Properties, 617-236-3300; or Eric