Boston Properties to Release First Quarter 2005 Financial Results On April 26, 2005

March 30, 2005

BOSTON, March 30 /PRNewswire-FirstCall/ -- Boston Properties, Inc. (NYSE: BXP), a real estate investment trust, announced today that it will release financial results for the First Quarter 2005 on Tuesday, April 26, 2005 after the close of the day's trading on the New York Stock Exchange. The Company will host a conference call and audio web cast, both open to the general public, at 10:00 A.M. Eastern Time on Wednesday, April 27, 2005 to discuss the financial results of the First Quarter and provide a Company update.

The conference call can be accessed by dialing 800-218-9073 (Domestic) or 303-262-2191 (International); no passcode is required. The replay will be available through May 4, 2005 by dialing 800-405-2236 (Domestic) or 303-590-3000 (International) / passcode 11027376. The Company will audio web cast the call which may be accessed through http://www.fulldisclosure.com for individual investors or through the password-protected event management site, http://www.streetevents.com, for institutional investors. A link to the audio web cast will also be available on the Company's own site at http://www.bostonproperties.com in the Investor Relations section. A replay of the audio web cast will be archived in the Investor Relations section of the Company's web site under the heading Events & Webcasts.

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 properties and also includes three hotels and one industrial property. 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, Midtown Manhattan, Washington, D.C. and San Francisco.

Visit the Company's web site at http://www.bostonproperties.com.

CONTACT:
AT THE COMPANY
Kathleen DiChiara
Investor Relations
+1-617-236-3300

AT FINANCIAL RELATIONS BOARD
Marilynn Meek
General Info.
+1-212-827-3773