Current report filing

Cover Page

v3.21.1
Cover Page
Apr. 29, 2021
Cover [Abstract]  
Document Type 8-K
Document Period End Date Apr. 29, 2021
Entity Registrant Name CORPORATE OFFICE PROPERTIES TRUST
Entity Incorporation, State or Country Code MD
Entity File Number 1-14023
Entity Tax Identification Number 23-2947217
Entity Address, Address Line One 6711 Columbia Gateway Drive
Entity Address, Address Line Two Suite 300
Entity Address, City or Town Columbia
Entity Address, State or Province MD
Entity Address, Postal Zip Code 21046
City Area Code 443
Local Phone Number 285-5400
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Shares of beneficial interest, $0.01 par value
Trading Symbol OFC
Security Exchange Name NYSE
Entity Emerging Growth Company false
Entity Central Index Key 0000860546
Amendment Flag false