Extra Space Storage is a REIT based in Salt Lake City, Utah, and is a component of the S&P 500. It owns and/or operates almost 1,906 self-storage facilities in 40 US states and Puerto Rico, providing customers with a range of safe and easily accessible storage units such as boat storage and business storage. The company is the top self-storage management entity in the country and the second-largest owner and/or operator of such stores in the United States.