This residential project for a family of four is built on an 85m² site with strict regulations and contains a covered garage and courtyard.
Regulations limit possible building coverage to 43m². Due to this limitation, we used a computer to reverse-calculate shadow coverage and find maximum building volume. In addition, we took advantage of sky factor calculations, wall setback mitigations, and utilized the garage space which doesn’t get factored into the building area, to produce a wood-construction, three-story house with a gross building area of 102.78m².
There is a limitation to the form of the building that requires that minimal shade be cast on neighboring buildings as a measure to maintain a good living environment for everyone. We created the largest exterior envelope possible within this limitation and inserted a vertically expansive exterior space (the courtyard) that remains within building area constraints.
By taking this exterior space as the central axis, the surrounding interior spaces were arranged. We gave form to interior spaces that hold reciprocal relationships in both the horizontal and vertical directions.
The living room flows seamlessly into the courtyard, which itself connects the top and bottom of the building.
We planted a trumpet tree in the courtyard, which blooms with vibrant yellow flowers. The tree slips in and out of view from the living room, dining room, bedroom, kitchen, bathroom, etc., giving one the sense of the four seasons and providing a charm to daily life.
PHOTO：YUNAGI MIKI／ZEROKOBO DESIGN