Photos © Masao Nishikawa
 
This three-story home (one story above street level) in a north-western suburb of Tokyo is built on a steep slope. The lower part of the building (open living/dining/kitchen area and entry hall) is surrounded on all four sides with windows which divide the concrete foundation and the upper structure built with steel and wood framing.

Who: Sadahiro Shimizu, Masatoshi Matsuzaki & Yuko Shimizu of atelierA5
What: Single family residence
Where: Tokorozawa, Saitama
When: 2007 (completion)
How: Three-story steel & wood frame construction
Site Area: 1961 square feet (182.20m²)
Construction Area: 505 square feet (46.87m²)
Total Floor Area: 1328 square feet (123.35m²)