Wallenstam AB builds, develops, and buys properties in metropolitan areas. It operates through the following business segments: Gothenburg Region. Stockholm Region, Svensk NaturEnergi, and Other. The Gothenburg Region and Stockholm Region segments comprises of properties in Gothenburg and Stockholm. The Svensk NaturEnergi segment represents the renewable energy operations. The Other segment covers listing costs and office properties. The company was founded in 1944 and is headquartered in Gothenburg, Sweden.