{ "area": { "code": "10000", "name": "群馬県", "slug": "gunma" }, "structure": { "id": "steel", "name": "鉄骨造" }, "segment": { "segment": "all", "building_type": "detached", "label": "一戸建" }, "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": 173, "price_per_tsubo": 112.29847242003262, "prev_price_per_tsubo": 106.76696657869547, "change_vs_prev": 5.180915051342211, "note": "Sum of monthly preliminary releases from April; replaced by the annual report." }, "years": [ { 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221931.71203446266, "cost_per_unit": 2800.987517337032, "floor_per_unit": 126.20943134535368, "yoy": 4.843873633430729, "ratio_national": 0.9351641550859943, "rank_in_national": 28, "is_spliced": false, "price_per_tsubo_real": 78.382439564787, "deflator": 93.6, "deflator_provisional": false }, { "fiscal_year": 2015, "units": 817, "floor_total": 100351, "cost_total": 2269794, "price_per_tsubo": 74.77217274626062, "price_per_sqm": 226185.48893384222, "cost_per_unit": 2778.205630354957, "floor_per_unit": 122.82864137086904, "yoy": 1.9167053056027283, "ratio_national": 0.9330836751046021, "rank_in_national": 29, "is_spliced": false, "price_per_tsubo_real": 80.05585947137112, "deflator": 93.4, "deflator_provisional": false }, { "fiscal_year": 2016, "units": 829, "floor_total": 101700, "cost_total": 2393905, "price_per_tsubo": 77.8146235, "price_per_sqm": 235388.88888888888, "cost_per_unit": 2887.70205066345, "floor_per_unit": 122.6779252110977, "yoy": 4.068961275291461, "ratio_national": 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