The Community House closes the gap between buildings at Bonner Street 31 in the Südstadt quarter of Cologne. The housing project is intended to offer the quarter's multi-layered population affordablehousing and a basis for a community that spans social classes. In addition to the idea of communal living, the new building is characterized above all by its efficient use of space: Fourteen light-flooded open split-level residential units with variable floor plans, eight large community areas, a daylight pool and a large community garden will be realized on a width of only 10.47 meters. Small sanitary rooms and the split level divide the residential units into a public and a private area. All living spaces are oriented towards the lively Bonner Street, while the private rooms are all oriented towards the green backyard, thus creating a quiet atmosphere with privacy in the middle of the city. Floor-to-ceiling fixed glazing seems to completely dissolve the boundary between inside and outside, thus merging the colourful hustle and bustle of the street with the life in the living rooms to form a community.