{
  "area": {
    "code": "12000",
    "name": "千葉県",
    "slug": "chiba"
  },
  "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": 401,
    "price_per_tsubo": 130.63411571434582,
    "prev_price_per_tsubo": 125.3635068148761,
    "change_vs_prev": 4.204260899667418,
    "note": "Sum of monthly preliminary releases from April; replaced by the annual report."
  },
  "years": [
    {
      "fiscal_year": 2012,
      "units": 2242,
      "floor_total": 289381,
      "cost_total": 6581599,
      "price_per_tsubo": 75.18594571934578,
      "price_per_sqm": 227437.15033122423,
      "cost_per_unit": 2935.592774308653,
      "floor_per_unit": 129.07270294380018,
      "yoy": null,
      "ratio_national": 1.01667810509853,
      "rank_in_national": 4,
      "is_spliced": false,
      "price_per_tsubo_real": 85.63319558012049,
      "deflator": 87.8,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2013,
      "units": 2227,
      "floor_total": 284645,
      "cost_total": 6573101,
      "price_per_tsubo": 76.33821621595321,
      "price_per_sqm": 230922.76344218236,
      "cost_per_unit": 2951.5496183206105,
      "floor_per_unit": 127.81544678940278,
      "yoy": 1.5325610199925288,
      "ratio_national": 1.0100473132786898,
      "rank_in_national": 4,
      "is_spliced": false,
      "price_per_tsubo_real": 84.5384454218751,
      "deflator": 90.3,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2014,
      "units": 1924,
      "floor_total": 243437,
      "cost_total": 5746623,
      "price_per_tsubo": 78.03714656017779,
      "price_per_sqm": 236062.02015305808,
      "cost_per_unit": 2986.810291060291,
      "floor_per_unit": 126.52650727650727,
      "yoy": 2.225530577526813,
      "ratio_national": 0.9947057029418459,
      "rank_in_national": 10,
      "is_spliced": false,
      "price_per_tsubo_real": 83.37301982924978,
      "deflator": 93.6,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2015,
      "units": 2090,
      "floor_total": 263576,
      "cost_total": 6374713,
      "price_per_tsubo": 79.95212951205724,
      "price_per_sqm": 241854.8350380915,
      "cost_per_unit": 3050.1019138755983,
      "floor_per_unit": 126.11291866028708,
      "yoy": 2.453937690305885,
      "ratio_national": 0.9977244755306427,
      "rank_in_national": 8,
      "is_spliced": false,
      "price_per_tsubo_real": 85.60185172597134,
      "deflator": 93.4,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2016,
      "units": 2105,
      "floor_total": 261997,
      "cost_total": 6518579,
      "price_per_tsubo": 82.24923671801587,
      "price_per_sqm": 248803.57408672618,
      "cost_per_unit": 3096.7121140142517,
      "floor_per_unit": 124.46413301662707,
      "yoy": 2.8731032181102956,
      "ratio_national": 1.0056595543115563,
      "rank_in_national": 9,
      "is_spliced": false,
      "price_per_tsubo_real": 88.06128128267223,
      "deflator": 93.4,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2017,
      "units": 2105,
      "floor_total": 261456,
      "cost_total": 6584069,
      "price_per_tsubo": 83.24746595798145,
      "price_per_sqm": 251823.2130836546,
      "cost_per_unit": 3127.823752969121,
      "floor_per_unit": 124.20712589073634,
      "yoy": 1.2136638342163941,
      "ratio_national": 0.9949679789769978,
      "rank_in_national": 12,
      "is_spliced": false,
      "price_per_tsubo_real": 87.44481718275362,
      "deflator": 95.2,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2018,
      "units": 2207,
      "floor_total": 269165,
      "cost_total": 6793445,
      "price_per_tsubo": 83.43470565099474,
      "price_per_sqm": 252389.61231958092,
      "cost_per_unit": 3078.135478024468,
      "floor_per_unit": 121.95967376529225,
      "yoy": 0.2249193904686697,
      "ratio_national": 0.9726572000036325,
      "rank_in_national": 19,
      "is_spliced": false,
      "price_per_tsubo_real": 85.05066834963787,
      "deflator": 98.1,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2019,
      "units": 1996,
      "floor_total": 242951,
      "cost_total": 6456080,
      "price_per_tsubo": 87.84670449267549,
      "price_per_sqm": 265735.88912990683,
      "cost_per_unit": 3234.509018036072,
      "floor_per_unit": 121.71893787575151,
      "yoy": 5.28796596962422,
      "ratio_national": 0.9894284317527584,
      "rank_in_national": 12,
      "is_spliced": false,
      "price_per_tsubo_real": 87.6713617691372,
      "deflator": 100.2,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2020,
      "units": 1812,
      "floor_total": 227325,
      "cost_total": 6251714,
      "price_per_tsubo": 90.91324589930716,
      "price_per_sqm": 275012.1632024634,
      "cost_per_unit": 3450.173289183223,
      "floor_per_unit": 125.45529801324503,
      "yoy": 3.4907870754415704,
      "ratio_national": 0.9951455440956791,
      "rank_in_national": 11,
      "is_spliced": false,
      "price_per_tsubo_real": 90.91324589930716,
      "deflator": 100,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2021,
      "units": 1939,
      "floor_total": 239216,
      "cost_total": 6712037,
      "price_per_tsubo": 92.75543773923985,
      "price_per_sqm": 280584.78529864224,
      "cost_per_unit": 3461.597215059309,
      "floor_per_unit": 123.37080969571944,
      "yoy": 2.0263184112610633,
      "ratio_national": 0.9844232932443271,
      "rank_in_national": 15,
      "is_spliced": false,
      "price_per_tsubo_real": 85.64675691527226,
      "deflator": 108.3,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2022,
      "units": 1621,
      "floor_total": 196489,
      "cost_total": 5885886,
      "price_per_tsubo": 99.02591534355612,
      "price_per_sqm": 299552.952073653,
      "cost_per_unit": 3631.0215916101174,
      "floor_per_unit": 121.21468229487971,
      "yoy": 6.7602264159911,
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      "rank_in_national": 14,
      "is_spliced": false,
      "price_per_tsubo_real": 85.07381043260834,
      "deflator": 116.4,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2023,
      "units": 1251,
      "floor_total": 150012,
      "cost_total": 4995602,
      "price_per_tsubo": 110.08726725581953,
      "price_per_sqm": 333013.492253953,
      "cost_per_unit": 3993.286970423661,
      "floor_per_unit": 119.9136690647482,
      "yoy": 11.170158714400813,
      "ratio_national": 1.0232401956213903,
      "rank_in_national": 8,
      "is_spliced": false,
      "price_per_tsubo_real": 94.09168141523037,
      "deflator": 117,
      "deflator_provisional": true
    },
    {
      "fiscal_year": 2024,
      "units": 1207,
      "floor_total": 144404,
      "cost_total": 5082763,
      "price_per_tsubo": 116.35790627524169,
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      "ratio_national": 1.0201498154427633,
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      "is_spliced": true,
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      "deflator": 121.4,
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    },
    {
      "fiscal_year": 2025,
      "units": 1133,
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      "price_per_tsubo": 126.05452307415291,
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    }
  ]
}