Corporate Office Properties Trust

The name says "corporate" but it's really about the government. A real estate investment trust (REIT), Corporate Office Properties Trust owns and manages approximately 240 properties totaling some 21 million sq. ft. of leasable space. The REIT focuses on large suburban business parks near federal government hubs and military installations. More than 80% of its office space is located in in the Greater DC/Baltimore regions; other major markets include Colorado Springs, Colorado; Philadelphia; and San Antonio. The company has interests in about 20 additional office properties through joint ventures. Subsidiaries provide property management, construction and development, and HVAC services.