The “black house“ is part of an architectural ensemble of two residential buildings, located in the “Waldvillenviertel“, a popular suburban district in the city of Mainz. Beside the admissible building density, a sloped roof shape was one of the building requirements on the plot.
The slick layout of the black house enables a pleasant usage of the garden and takes care of the existing vegetation with its oaks and pine-trees.
Clearly divided to an open plan area and a buffer zone, containing technical, sanitary and storage space, the inner organisation of the building offers a generous space for cooking, eating and living with an increased ceiling height in the ground floor. The maximized glazing with a sliding door connects the living space to the terrace and the garden. A free-standing box creates a moderate entrance area with a wardrobe at the front end of the house. Furthermore it contains parts of the kitchen and hides a storage room inside.
In contrast the upper floor reveals a higher density, caused by the required individual rooms for the three children. By using hidden sliding doors, the corridor surprisingly becomes part of the bathroom for the children, in addition a separate unit for the parents is generated. As a result of the small ground area, the architects offer extra loft-beds under the roof for the rooms of the children.
The asymmetrical position of the ridge reflects the inner organisation with the stretched dividing wall. The architects decided to cover the roof with dark roofing tiles and blend in the colour of the facade to gain a monolithic appearance of the house as much as possible.
Load bearing walls were constructed with insulating bricks. The windows are made of larch. The construction details were developed as a kind of optimized standard details with regard to the desired monolithic appearance.
Embedded into a green environment the intended tension between the black and the white house represents the community, paradoxical achieved by a strong visual contrast. The three existing oak-trees between the two houses become the new heart of the eye-catching architectural ensemble.