UDR, Inc. engages in the multi-family real estate investment trust business. It operates through the Same-Store Communities and Non-Mature Communities/Other segments. The Same-Store Communities segment pertains to properties that are acquired, developed, and stabilized occupancy. The Non-Mature Communities/Other segment include recently acquired, developed and redeveloped communities, and the non-apartment components of mixed use properties. The company was founded in 1972 and is headquartered in Highlands Ranch, CO.