{
  "area": {
    "code": "12000",
    "name": "千葉県",
    "slug": "chiba"
  },
  "structure": {
    "id": "all",
    "name": "全構造"
  },
  "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": 8147,
    "price_per_tsubo": 74.16578567295575,
    "prev_price_per_tsubo": 74.1113158307924,
    "change_vs_prev": 0.07349733512720036,
    "note": "Sum of monthly preliminary releases from April; replaced by the annual report."
  },
  "years": [
    {
      "fiscal_year": 2012,
      "units": 23000,
      "floor_total": 2604555,
      "cost_total": 44708768,
      "price_per_tsubo": 56.74589254852364,
      "price_per_sqm": 171656.07176657816,
      "cost_per_unit": 1943.8594782608695,
      "floor_per_unit": 113.24152173913043,
      "yoy": null,
      "ratio_national": 1.0127904754885435,
      "rank_in_national": 11,
      "is_spliced": false,
      "price_per_tsubo_real": 64.63085711676952,
      "deflator": 87.8,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2013,
      "units": 25540,
      "floor_total": 2873158,
      "cost_total": 49391011,
      "price_per_tsubo": 56.82816964945541,
      "price_per_sqm": 171904.95962978716,
      "cost_per_unit": 1933.868872357087,
      "floor_per_unit": 112.496397807361,
      "yoy": 0.1449921698938983,
      "ratio_national": 1.0072290034328157,
      "rank_in_national": 13,
      "is_spliced": false,
      "price_per_tsubo_real": 62.863019523733854,
      "deflator": 90.4,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2014,
      "units": 22372,
      "floor_total": 2502660,
      "cost_total": 43238943,
      "price_per_tsubo": 57.11477603029177,
      "price_per_sqm": 172771.94265301718,
      "cost_per_unit": 1932.7258626854998,
      "floor_per_unit": 111.86572501340962,
      "yoy": 0.5043385746968276,
      "ratio_national": 0.9917828001684506,
      "rank_in_national": 21,
      "is_spliced": false,
      "price_per_tsubo_real": 61.150723801168915,
      "deflator": 93.4,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2015,
      "units": 22725,
      "floor_total": 2546127,
      "cost_total": 44777871,
      "price_per_tsubo": 58.13780623397419,
      "price_per_sqm": 175866.60445453034,
      "cost_per_unit": 1970.4233663366338,
      "floor_per_unit": 112.04079207920792,
      "yoy": 1.791183078683245,
      "ratio_national": 0.998249358188873,
      "rank_in_national": 17,
      "is_spliced": false,
      "price_per_tsubo_real": 62.379620422719086,
      "deflator": 93.2,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2016,
      "units": 23439,
      "floor_total": 2609247,
      "cost_total": 45949265,
      "price_per_tsubo": 58.21550077257921,
      "price_per_sqm": 176101.63008714776,
      "cost_per_unit": 1960.376509236742,
      "floor_per_unit": 111.32074747216178,
      "yoy": 0.13363857984656224,
      "ratio_national": 0.9967705498997662,
      "rank_in_national": 21,
      "is_spliced": false,
      "price_per_tsubo_real": 62.26256767120771,
      "deflator": 93.5,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2017,
      "units": 23353,
      "floor_total": 2591488,
      "cost_total": 45670412,
      "price_per_tsubo": 58.25872675678221,
      "price_per_sqm": 176232.38849649313,
      "cost_per_unit": 1955.6550336145249,
      "floor_per_unit": 110.97023936967413,
      "yoy": 0.07425167460444193,
      "ratio_national": 0.9890589437542605,
      "rank_in_national": 23,
      "is_spliced": false,
      "price_per_tsubo_real": 61.19614155124181,
      "deflator": 95.2,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2018,
      "units": 23905,
      "floor_total": 2639188,
      "cost_total": 46821723,
      "price_per_tsubo": 58.64788096799849,
      "price_per_sqm": 177409.5782490675,
      "cost_per_unit": 1958.6581468312067,
      "floor_per_unit": 110.40317925120267,
      "yoy": 0.667975825906586,
      "ratio_national": 0.9852112614570128,
      "rank_in_national": 24,
      "is_spliced": false,
      "price_per_tsubo_real": 59.7837726483165,
      "deflator": 98.1,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2019,
      "units": 23580,
      "floor_total": 2593856,
      "cost_total": 45730734,
      "price_per_tsubo": 58.28241935938619,
      "price_per_sqm": 176304.0585136569,
      "cost_per_unit": 1939.386513994911,
      "floor_per_unit": 110.00237489397794,
      "yoy": -0.623145461660779,
      "ratio_national": 0.9704068299872384,
      "rank_in_national": 35,
      "is_spliced": false,
      "price_per_tsubo_real": 58.16608718501616,
      "deflator": 100.2,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2020,
      "units": 22069,
      "floor_total": 2435563,
      "cost_total": 43431443,
      "price_per_tsubo": 58.949503648630724,
      "price_per_sqm": 178321.98551217932,
      "cost_per_unit": 1967.9841859622095,
      "floor_per_unit": 110.36127599800625,
      "yoy": 1.1445720623419975,
      "ratio_national": 0.9745905637333233,
      "rank_in_national": 36,
      "is_spliced": false,
      "price_per_tsubo_real": 58.94950364863072,
      "deflator": 100,
      "deflator_provisional": false
    },
    {
      "fiscal_year": 2021,
      "units": 24580,
      "floor_total": 2701077,
      "cost_total": 48209573,
      "price_per_tsubo": 59.00265869046681,
      "price_per_sqm": 178482.77927656265,
      "cost_per_unit": 1961.3333197721724,
      "floor_per_unit": 109.88921887713589,
      "yoy": 0.09017046547654672,
      "ratio_national": 0.968065180127052,
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      "is_spliced": false,
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      "deflator": 108.7,
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    },
    {
      "fiscal_year": 2022,
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      "floor_total": 2427311,
      "cost_total": 43910049,
      "price_per_tsubo": 59.80173158021778,
      "price_per_sqm": 180899.97120270127,
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      "is_spliced": false,
      "price_per_tsubo_real": 51.866202584750894,
      "deflator": 115.3,
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    },
    {
      "fiscal_year": 2023,
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      "price_per_tsubo_real": 59.23389708925024,
      "deflator": 114.9,
      "deflator_provisional": true
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    {
      "fiscal_year": 2024,
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    {
      "fiscal_year": 2025,
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  ]
}