Horngården was built in 1929-1930 and is characterized by its purely functionalist design. Originally, the building was planned with 12 full-fledged apartments and a secluded top floor, which caused great debate. This was reduced to the current 8 floors with the possibility of future expansion. Lars Backer died in 1930 and architect F.S.Platou was responsible for the completion of the building. The building was protected by the National Antiquities Authority in 1997. The protection covers the building's exterior, main structure and floor plan, and the stairwell to the west.