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