{
  "area": {
    "code": "12000",
    "name": "千葉県",
    "slug": "chiba"
  },
  "structure": {
    "id": "steel",
    "name": "鉄骨造"
  },
  "segment": {
    "segment": "company",
    "building_type": "detached",
    "label": "給与住宅・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": null,
  "years": [
    {
      "fiscal_year": 2021,
      "units": 10,
      "floor_total": 1868,
      "cost_total": 60099,
      "price_per_tsubo": 106.35689144004282,
      "price_per_sqm": 321729.1220556745,
      "cost_per_unit": 6009.9,
      "floor_per_unit": 186.8,
      "yoy": null,
      "ratio_national": 1.132833921800562,
      "rank_in_national": 1,
      "is_spliced": false,
      "price_per_tsubo_real": 98.20580927058433,
      "deflator": 108.3,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2022,
      "units": 12,
      "floor_total": 2433,
      "cost_total": 80846,
      "price_per_tsubo": 109.84788258939581,
      "price_per_sqm": 332289.3547061241,
      "cost_per_unit": 6737.166666666667,
      "floor_per_unit": 202.75,
      "yoy": 3.2823365764887757,
      "ratio_national": 0.9653534928230009,
      "rank_in_national": 3,
      "is_spliced": false,
      "price_per_tsubo_real": 94.37103315240189,
      "deflator": 116.4,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2024,
      "units": 13,
      "floor_total": 2690,
      "cost_total": 133770,
      "price_per_tsubo": 164.39238970260223,
      "price_per_sqm": 497286.24535315984,
      "cost_per_unit": 10290,
      "floor_per_unit": 206.92307692307693,
      "yoy": null,
      "ratio_national": 1.202159542561307,
      "rank_in_national": 2,
      "is_spliced": true,
      "price_per_tsubo_real": 135.41383006804136,
      "deflator": 121.4,
      "deflator_provisional": true
    },
    {
      "fiscal_year": 2025,
      "units": 17,
      "floor_total": 3731,
      "cost_total": 152783,
      "price_per_tsubo": 135.37081575180918,
      "price_per_sqm": 409496.1136424551,
      "cost_per_unit": 8987.235294117647,
      "floor_per_unit": 219.47058823529412,
      "yoy": -17.65384273766881,
      "ratio_national": 0.8761385239294156,
      "rank_in_national": 2,
      "is_spliced": false,
      "price_per_tsubo_real": 108.90652916477006,
      "deflator": 124.3,
      "deflator_provisional": true
    }
  ]
}