{"building_coverage":{"built_area_m2":105.0975,"site_area_m2":420.0,"coverage_pct":25.023214285714285,"limit_pct":50.0,"pass":true},"floor_area_ratio":{"gross_floor_m2":173.116602,"site_area_m2":420.0,"far_pct":41.21823857142857,"limit_pct":100.0,"pass":true,"designated_limit_pct":100.0,"road_limit_pct":160.0,"road_width_m":4.0},"north_slope":{"kind":"north","max_height_mm":6112,"allowed_height_mm":12281,"pass":true,"margin_mm":6261},"road_slope":{"kind":"road","max_height_mm":6112,"allowed_height_mm":13937,"pass":true,"margin_mm":7917},"daylight":{"required_ratio":0.14285714285714285,"actual_ratio":0.45671282295617144,"window_area_m2":79.064572,"floor_area_m2":173.116602,"pass":true},"ventilation":{"required_ratio":0.05,"actual_ratio":0.22835641147808572,"mechanical_units":9,"pass":true},"overall_pass":true,"messages":["全項目 OK","「美しいものは長持ちする。」"],"high_district":{"district":"指定なし","max_height_mm":6112,"allowed_height_mm":9223372036854775807,"pass":true,"margin_mm":9223372036854775807,"message":"高度地区 指定なし → 適用外"},"fire_district":{"district":"指定なし","gross_floor_m2":173.116602,"stories":2,"required_grade":"規制なし","pass":true,"message":"防火 / 準防火地域 指定なし → 構造制限なし"},"energy_ua":{"climate_zone":6,"ua_w_m2k":0.34454916174371925,"standard_w_m2k":0.87,"envelope_area_m2":794.642003,"wall_area_m2":403.231528,"window_area_m2":79.064572,"roof_area_m2":225.787602,"floor_area_m2":86.558301,"pass":true,"message":"省エネ UA 値 OK (地域区分 6): UA=0.345 ≤ 基準 0.87 W/m²K"},"sickhouse":{"habitable_floor_m2":173.116602,"habitable_volume_m3":415.47984479999997,"required_airflow_m3h":207.73992239999998,"estimated_airflow_m3h":1070.32286,"air_change_per_hour":2.5761125922130415,"pass":true,"message":"シックハウス OK: 換気回数 2.58 回/h ≥ 0.5 回/h (居室 173.1 m² / 自然 395 + 機械 675 m³/h、 機械換気 9 台)"},"neighbor_slope":{"kind":"neighbor","max_height_mm":6112,"allowed_height_mm":9223372036854775807,"pass":true,"margin_mm":9223372036854775807},"shadow":{"regulated":true,"measurement_height_m":1.5,"max_shadow_5m_h":1.9166666666666665,"limit_5m_h":4.0,"max_shadow_10m_h":0.6666666666666666,"limit_10m_h":2.5,"pass":true,"message":"日影規制 OK: 5m ライン 1.9h ≤ 4.0h / 10m ライン 0.7h ≤ 2.5h (冬至・測定面 1.5m)"},"site_eligibility":{"zoning":"第二種低層住居専用地域","use_allowed":true,"use_message":"用途制限: 住宅は「第二種低層住居専用地域」で建築可能","road_width_m":4.0,"frontage_m":24.3,"road_access_ok":true,"road_message":"接道義務 OK: 幅員 4.0m の道路に 約24.3m 接道 (法 43 条)","lot_area_m2":420.0,"min_lot_area_m2":null,"min_lot_ok":true,"pass":true,"message":"用途制限: 住宅は「第二種低層住居専用地域」で建築可能 / 接道義務 OK: 幅員 4.0m の道路に 約24.3m 接道 (法 43 条)"}}