Corporate Office Properties Trust Names Charles J. Fiala, Jr., Senior Vice President, Government Services.

COLUMBIA, Md. -- Corporate Office Properties Trust (NYSE:OFC) has named Charles J. Fiala, Jr. (Chuck), Senior Vice President, Government Services. Mr. Fiala joins Corporate Office Properties from Kellogg Brown Root (KBR) in Arlington, VA, where he was Director of Installation Support Programs, Operations, Maintenance and Logistics.

In his new position, Mr. Fiala will have the primary responsibility for expanding and diversifying the Company's government and defense contractor relationships, as well as overseeing government and defense contractor property management and third party construction activities.

Mr. Fiala retired in 2003 with 25 years of service from the Army Corps of Engineers as a Colonel. His last assignment with the Army Corps of Engineers was Commander of the Baltimore District office. Mr. Fiala graduated from West Point and earned a Master of Science degree in Civil Engineering from Purdue University. In addition, Mr. Fiala earned a Master of Science degree in National Security Strategy from the National Defense University.

"Chuck's extensive engineering and security background combined with his long-term service with the Army Corps of Engineers will prove extremely valuable in this important management position," stated Randall M. Griffin, President and Chief Executive Officer of Corporate Office Properties Trust. "His government experience will be particularly useful given our tenant concentration in this sector, and will help to expand our already strong relationships and activities within the government and defense contractor sector," he added.

Company Information

Corporate Office Properties Trust (COPT) is a fully integrated, self-managed real estate investment trust (REIT) that focuses on the ownership, management, leasing, acquisition and development of suburban office properties primarily in select Mid-Atlantic submarkets. The Company is among the largest owners of suburban office properties in the Greater Washington, DC region. The Company currently owns 147 office properties totaling 12.2 million rentable square feet. The Company has implemented a core customer expansion strategy that is built around meeting, through acquisitions and development, the multi-location requirements of the Company's existing strategic tenants. The Company's property management services team provides comprehensive property and asset management to company owned properties and select third party clients. The Company's development and construction services team provides a wide range of development and construction management services for company owned properties, as well as land planning, design/build services, consulting, and merchant development to select third party clients. 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 may contain "forward-looking" statements, as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, that are based on the Company's current expectations, estimates and projections about future events and financial trends affecting the Company. Forward-looking statements can be identified by the use of words such as "may", "will", "should", "expect", "estimate" or other comparable terminology. Forward-looking statements are inherently subject to risks and uncertainties, many of which the Company cannot predict with accuracy and some of which the Company might not even anticipate. Accordingly, the Company can give no assurance that these expectations, estimates and projections will be achieved. Future events and actual results may differ materially from those discussed in the forward-looking statements.

Important factors that may affect these expectations, estimates, and projections include, but are not limited to:

--the Company's ability to borrow on favorable terms;

--general economic and business conditions, which will, among other things, affect office property demand and rents, tenant creditworthiness, interest rates and financing availability;

--adverse changes in the real estate markets including, among other things, increased competition with other companies;

--risk of real estate acquisition and development, including, among other things, risks that development projects may not be completed on schedule, that tenants may not take occupancy or pay rent or that development or operating costs may be greater than anticipated;

--risks of investing through joint venture structures, including risks that the Company's joint venture partners may not fulfill their financial obligations as investors or may take actions that are inconsistent with the Company's objectives;

--governmental actions and initiatives; and

--environmental requirements.

The Company undertakes no obligation to update or supplement any forward-looking statements. For further information, please refer to the Company's filings with the Securities and Exchange Commission, particularly the section entitled "Risk Factors" in Item 1 of the Company's Annual Report on Form 10-K for the year ended December 31, 2004.