The entire building envelope of the multi-family house is made up of elements consisting of construction straw, clay building panels, clay plaster and wooden facade. The supporting structure of the building made of cross-laminated timber elements is room-forming and is carried out in visual quality. The construction and choice of materials follows the Cradle to Cradle principles and thus promotes the circular economy. The point symmetrical spatial entanglement of the two halves of the house reacts to visual references in the surrounding area and allows exposure from all four cardinal directions. Due to the divisibility of a duplex apartment into two separate residential units, the house reacts to changing room demands of the residents. In addition to the materials, the energy concept plays a central role. The building meets the efficiency house Plus standard. This means that the building generates more energy from the electricity generated via the photovoltaic system in the annual balance sheet than is necessary for operation and use.