TIER REIT, Inc. is a real estate investment trust. The Company's business consists of owning, acquiring, developing, operating, investing in, and disposing of real estate assets. The Company's business is conducted through Tier Operating Partnership LP (Tier OP). As of December 31, 2016, the Company owned interests in 29 operating office properties, one non-operating property and one development property located in 13 markets throughout the United States. It owns properties located in metropolitan cities and suburban markets in the United States. The Company's office properties include The Terrace Office Park, Domain 3, Domain 4, 5950 Sherry Lane, Burnett Plaza, Loop Central, One BriarLake Plaza, Three Eldridge Place, Eisenhower I, Forum Office Park, 500 E. Pratt, Woodcrest Corporate Center and 111 Woodcrest. The Company's properties are located in Austin, Dallas, Houston, Charlotte, Nashville, Atlanta and Denver.