Miyanosawa House Yosuke Tomiya Architectural Design Co., Ltd. 4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido High Sidelight Exposed Beam Wood Texture Two-Family House Borrowed Scenery Skip Floor High Airtightness and High Insulation Semi-Basement Second-Floor Living Ground‑source heat pump Underfloor central heating