Yui and Kenta Hosokawa came to us with a 420 m² plot on the edge of Memuro, two children and a budget of ¥37M. They wanted no stairs, a long kitchen and a view of the Hidaka range from the table.
Start a home like thisThe kitchen, dining and living space run 14 metres along the south wall. Five tall windows let the low winter sun reach the back of the room; a 900 mm roof overhang keeps the July sun out.
All 38 wall and roof panels were built in our Memuro workshop during the autumn rain, insulated and taped there, then raised on site in four days in late October.
A single 2.2 kW wall unit in the hall heats the house; the ventilation spreads it. The family's old house needed three kerosene stoves for the same area.
Monthly heating electricity, coldest outdoor night and the living-room temperature at 6 am, November 2025 to March 2026.
“The children do their homework on the window seat in January. In our old house nobody went near a window from December to March.”