CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated March 16, 2005 relating to the financial statements, management's assessment of the effectiveness of internal control over financial reporting and the effectiveness of internal control over financial reporting, which appears in the 2004 Annual Report to Shareholders of Corporate Office Properties Trust, which is incorporated by reference in Corporate Office Properties Trust's Annual Report on Form 10-K for the year ended December 31, 2004. We also consent to the incorporation by reference of our report dated March 16, 2005 relating to the financial statement schedules, which appears in such Annual Report on Form 10-K.
/s/ PricewaterhouseCoopers LLP
PricewaterhouseCoopers
LLP
Baltimore, Maryland
May 31, 2005