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