House in Kosai is a minimalist residence located in Shizuoka, Japan, designed by Shuhei Goto Architects. The house is situated on a hill close to Lake Hamana. The house is planned as a long site from the North to the South. The building is characterized by four metal-clad volumes that protrude in varying distances from each other. The front facade features small square windows on the top-right of each volume, while the side and back of the building contain additional glazings.