{ "area": { "code": "12000", "name": "千葉県", "slug": "chiba" }, "structure": { "id": "rc", "name": "鉄筋コンクリート造" }, "segment": { "segment": "all", "building_type": "all", "label": "新築住宅すべて" }, "unit": { "price_per_tsubo": "万円/坪", "price_per_sqm": "円/㎡", "cost": "万円", "floor": "㎡", "yoy": "%" }, "formula": "price_per_tsubo = cost_total / floor_total * 3.30579", "formula_real": "price_per_tsubo_real = price_per_tsubo / deflator * 100 (MLIT construction cost deflator for housing of the same structure, FY2020 = 100)", "source": "https://www.e-stat.go.jp/stat-search/files?page=1&toukei=00600120&tstat=000001016966&cycle=8", "last_verified_at": "2026-10-13T11:03:37.415Z", "provisional": { "fiscal_year": 2026, "through_month": "2026-08", "months": 5, "units": 3293, "price_per_tsubo": 126.6301703562799, "prev_price_per_tsubo": 133.60255728072823, "change_vs_prev": -5.2187525945314235, "note": "Sum of monthly preliminary releases from April; replaced by the annual report." }, "years": [ { 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214396.59530255652, "cost_per_unit": 1735.159767141009, "floor_per_unit": 80.93224450194049, "yoy": 10.718407747463887, "ratio_national": 1.0064478491919109, "rank_in_national": 10, "is_spliced": false, "price_per_tsubo_real": 76.53888993361106, "deflator": 92.6, "deflator_provisional": false }, { "fiscal_year": 2015, "units": 6073, "floor_total": 449266, "cost_total": 9763625, "price_per_tsubo": 71.84272544272213, "price_per_sqm": 217323.92391144668, "cost_per_unit": 1607.7103573192821, "floor_per_unit": 73.97760579614688, "yoy": 1.3653801753517048, "ratio_national": 0.9358380425870311, "rank_in_national": 12, "is_spliced": false, "price_per_tsubo_real": 77.83610557174661, "deflator": 92.3, "deflator_provisional": false }, { "fiscal_year": 2016, "units": 7005, "floor_total": 506713, "cost_total": 12126386, "price_per_tsubo": 79.11240796060096, "price_per_sqm": 239314.68109166334, "cost_per_unit": 1731.1043540328337, "floor_per_unit": 72.33590292648108, "yoy": 10.118884651271642, 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