A Baugemeinschaft consisting of three generations wanted to match living in the center of the city and in a green area at once. Touchstone for the occurrence of the project was the fact, that there is at the buildingsite of about 1771 m² a multi-storey old building that costs exceeded the financial resources of the group. For this a buyer had to be found at a time, the site could not be devided. The buildingsite consists of two parts: One the one hand there is the urban setting of the block development, on the othe hand the open development. Respectively with different permissible number of storeys. The task was to mediate inbetween. The front yard zone, the generous land area as well as the need of mediation between the urban zones were mergend into the concept of Gardenhouse: By terracing the building green roof terraces are formed, each of the ground floor appartments has a private garden, Penthouses have terraces on top. On the side facing away from the street a community garden with playground, buoles and berry bushes is available. The apartments are partially configured as barrier-free flats, partially as duplex. Unterneath an underground car park and outbuildings are located.