CA Immobilien Anlagen AG engages in the lease, management, and development of office buildings. It operates through the following segments: Austria, Germany, Eastern Europe Core Regions, Europe Other Regions, and Holding. the Eastern Europe Core Region segment is consists of Hungary, Poland, Romania, the Czech Republic, and Slovakia. The Eastern Europe Other Region segment is comprised of Bulgaria, Croatia, Slovenia, Russia, Ukraine, and Serbia. The Holding segment refers to the general management and financing activities of CA Immo Group. The company was founded in 1987 and is headquartered in Vienna, Austria.