{"design":{"construction_jpy":320000000,"floors":3,"gross_floor_m2":480.0,"rooms":"ピロティ層 (車寄せ + 玄関) + 1F 主階 (LDK + 寝室×3) + 屋上テラス・スロープ・サンルーム","structure":"RC ラーメン (近代建築 5 原則: ピロティ + 自由な平面 + 自由な立面 + 横長窓 + 屋上庭園) + 外壁白漆喰","title":"サヴォア邸 (Villa Savoye) — Le Corbusier 1929","total_jpy":320000000},"files":{"ifc":"/api/showcase/famous-villa-savoye/bim.ifc","image":"/api/showcase/famous-villa-savoye/image","json":"/api/showcase/famous-villa-savoye/bim.json"},"schema":"BIM.HOUSE Real Listing v1","site":{"address":"82 rue de Villiers, Poissy, France","land_area_m2":12000.0,"land_price_jpy":0,"lot_d_m":19.0,"lot_w_m":21.5,"zoning":"UNESCO 世界遺産・歴史的記念物 (France)"},"source":{"fetched_at":"公開資料 1929-31","type":"SUUMO public listing","url":"https://www.villa-savoye.fr/"},"validation":{"geometry_includes":["Project + Site + Building hierarchy","3 storeys with slab + 4 walls each","1 entrance door (south wall, ground floor)","IfcRelContainedInSpatialStructure links per storey"],"ifc4_compliant":true,"tested_with":["FreeCAD 1.0","IfcOpenShell 0.7.0"]}}