The little village Osterreinen is situated on the western banks of the Forggensee (Lake Forggen). In its very center, surrounded by houses from the 1970s, a building site remained undeveloped—to be separated and to be occupied by a semi-detached house.Our key idea was viewing the house as an analogy to the local rural houses, i.e. to add to the solid brick-built part of the semi-detached house of the neighbor a wooden part similar to a barn—which will form the Klimczyk house. In order to support this concept, nearly all openings within the façade can be fully closed by folding shutters. The wooden wall lamellas are seamlessly continued in the lamellas of these shutters to reach a homogeneous appearance. Through this mechanism mild daylight falls into the loggias on the north and south side of the house, a reference to the so-called `Schwangauer Laubentypus`.The inner structure arranges itself around a four story–staircase nucleus, which gives a surprising generosity to the semi-detached house. Nine light canons in the roof channel daylight through to the basement. All inner surfaces are white in order to most precisely reflect the differentiated daylight falling in. In the basement a separate granny-flat is situated like an angle around a halation, which is also accessible able from the outside. A wood-pellet burner with floor heating, incl. a ventilation system, support the house’s climate in order to gain a low energy standard.For the realization of the building, it was very important for us to be part of a local value-chain. Besides using local, natural and traditional materials with short delivery ways through local craftsmen, we also used local engineering (e.g. for structural engineering, heating, ventilation, sanitary and electricity design) – all against the backdrop to protect the environment and to reach high sustainability.