Corporate Office Properties Trust Captures Two Awards in NAIOP - Maryland Chapter Competition.

Business Editors

COLUMBIA, Md.--(BUSINESS WIRE)--April 12, 2002

Company cited for Best Exterior Public/Common Area and Best Office

Transaction in 2001

Corporate Office Properties Trust (NYSE:OFC) captured two Awards of Excellence in the bi-annual competition sponsored by the National Association of Industrial and Office Properties - Maryland Chapter.

The real estate investment trust was cited for the Best Exterior - Public/Common Area, as well as the Best Office Transaction in 2001.

The public/common area outside the Company's 221 National Business Park building in Anne Arundel County achieved first place honors in the awards competition. The centerpiece of this space is a thirty foot tall, stainless steel sculpture that was commissioned by Corporate Office Properties and dedicated last Spring.

The artwork, dubbed "Trinity," features a polished mirror finish and separate icons that radiate skyward. Extensive landscaping and benches complete the setting for employees at The National Business Park.

Corporate Office Properties' 150,000 square foot lease with Bookham Technology took top honors in the Best Office Transaction. The company, which designs, manufactures and markets optical components, leased space at 9140 Old Annapolis Road in Howard County, assuming an entire building that was recently vacated.

Within the span of less than four weeks, Corporate Office Properties purchased the building, which features both manufacturing and laboratory components, and successfully identified a full-user for the facility. This accelerated timeframe brought a new corporate headquarters to Maryland and saved more than 200 jobs, that might have otherwise been lost.

"It is extremely gratifying to be recognized for these honors, as chosen by our peers in the real estate industry," stated Randall M. Griffin, President and Chief Operating Officer for Corporate Office Properties. "Given the high quality of business communities in the Baltimore-Washington region and the impressive list of entrants, we are especially pleased to have won these two awards," he added.

Company Information

Corporate Office Properties Trust is a fully integrated, self-managed real estate investment trust which focuses on the ownership, management, leasing, acquisition and development of suburban office properties located in select Mid-Atlantic submarkets.

The Company currently owns 102 office properties totaling 7.9 million rentable square feet. Corporate Development Services, the Company's development company, provides a wide range of development and construction management services.

In addition, Corporate Office Services provides land planning, design/build services, consulting and merchant development for third party entities. The Company's shares are traded on the New York Stock Exchange under the symbol OFC. More information on Corporate Office Properties Trust can be found on the Internet at www.copt.com.

Forward-Looking Information

This press release contains forward-looking information based upon the Company's current best judgment and expectations. Actual results could vary from those presented herein.

The risks and uncertainties associated with the forward-looking information include the strength of the commercial office real estate market in which the Company operates, competitive market conditions, general economic growth, interest rates and capital market conditions. For further information, please refer to the Company's filings with the Securities and Exchange Commission.