The concept of the detached house has been rethought in a simple and sustainable way. The careful renovation and respectful extension of the 1950s bungalow with a modern brick building creates a harmonious ensemble of old and new on the hillside plot in Feldafing for several generations in the changing phases of life.
In addition to the requirement to minimise the sealing of the ground surface, the task was to preserve the existing building in its typical period charm and to create additional living and working space for the family and future generations with the extension. The old and new buildings function as an ensemble, but also as separate units. This means that the building structure can be flexibly adapted to changing utilisation requirements and can be used by several parties in changing phases of life in the long term.
The compact new building is rotated in relation to the existing building and does not tower over it in terms of height or floor space. Instead, the extension utilises the topography of the site and accommodates a second full residential floor on the slope. Inside the cube, four blocks divide the entrance and upper floors. These accommodate fixtures that not only differ in terms of their materiality, such as oak, linoleum, steel and shell limestone, but also contain functional room units.
The spacious cooking, living and dining area extends between the four blocks. The central space opens up to all sides of the garden via generous window fronts, linking the inside with the outside. In the basement, there is an open-plan bathroom, three bedrooms, each with its own garden access, and a utility room orientated towards the slope. High-quality, natural materials are used in all rooms, as well as breathable lime plaster, which creates a pleasant indoor climate.
The new cube is connected to the existing building via a glazed intermediate structure and a terrace. This intermediate space opens up a communicative relationship between the two structures. This is also emphasised by common elements that were taken up from the existing building in the structural extension. Red brick is used for the new building, the garage, the intermediate building and the terrace, echoing the brick exterior chimney of the studio building. The ornamentation of the old parapets can also be found as a design element in the extension. In this way, the different components interact to create a uniform appearance.
Pre-set solid bricks in combination with unfilled vertically perforated bricks for the construction create a 50 centimetre thick wall structure. This sufficiently insulating and thermal storage mass largely makes it possible to dispense with conventional insulating materials. In addition to durability, recyclability and physical advantages, the robust brick also offers a wide range of design options. The brick façade is largely structured in a wild masonry bond and is loosened up in places to provide light and privacy in perforated brickwork. The material and structure continue naturally from the outside to the inside.
With a focus on low-tech, the existing heating system is also used for the new building and supplemented by a solar thermal system. An extension with a possible heat pump as well as a future solar thermal system are already in place. Window ventilation and the cold basement room on the slope provide natural cooling in summer.
