ADLER Real Estate AG engages in the acquisition, management, and sale of residential and commercial properties. It operates through the Rental and Other segments. The Rental segment involves in letting business portray the activities of the Group's central Asset Management department, which manages residential units held in the portfolio in technical and commercial terms. The Other segment relates to historic holdings that have already been or are in the process of being sold. The company was founded by Heinrich Kleyer in 1880 and is headquartered in Hamburg, Germany.