Extra Space Storage, Inc. operates as a real estate investment trust (REIT) in the United States. It engages in property management and development activities that include acquiring, managing, developing, and selling, as well as the rental of self-storage facilities. As of December 31, 2006, Extra Space Storage owned interests in 567 properties located in 32 states and Washington, D.C., as well as managed 74 properties owned by franchisees or third parties. As a REIT, the company would not be subject to federal corporate income taxes if it distributes at least 90% of its taxable income to its stockholders. The company was founded in 1977 and is based in Salt Lake City, Utah.