{
 "code_insee": "29026",
 "nom": "Châteaulin",
 "departement": "29",
 "annee_reference": 2025,
 "prix_m2_median": 1547,
 "prix_m2_median_appartement": 1591,
 "prix_m2_median_appartement_yoy_pct": 24,
 "prix_m2_median_maison": 1545,
 "prix_m2_median_maison_yoy_pct": -0.8,
 "prix_vente_median": 143200,
 "ventes_annee_reference": 58,
 "ventes_5_ans": 272,
 "fiabilite": "Modérée",
 "derniers_12_mois": {
  "debut": "2025-07-01",
  "fin": "2026-06-30",
  "ventes": 53,
  "prix_m2_median": 1553,
  "prix_m2_median_appartement": null,
  "prix_m2_median_appartement_yoy_pct": null,
  "prix_m2_median_maison": 1591,
  "prix_m2_median_maison_yoy_pct": 8
 },
 "series_annuelles": [
  {
   "annee": 2021,
   "apt": 1392,
   "apt_n": 4,
   "maison": 1238,
   "maison_n": 26
  },
  {
   "annee": 2022,
   "apt": 1329,
   "apt_n": 16,
   "maison": 1327,
   "maison_n": 45
  },
  {
   "annee": 2023,
   "apt": 1292,
   "apt_n": 14,
   "maison": 1722,
   "maison_n": 41
  },
  {
   "annee": 2024,
   "apt": 1283,
   "apt_n": 7,
   "maison": 1557,
   "maison_n": 42
  },
  {
   "annee": 2025,
   "apt": 1591,
   "apt_n": 5,
   "maison": 1545,
   "maison_n": 53
  }
 ],
 "tranches_surface": {
  "Appartement": [
   {
    "band": "< 30 m²",
    "median": null,
    "n": 0
   },
   {
    "band": "30-60 m²",
    "median": 1283,
    "n": 4
   },
   {
    "band": "60-90 m²",
    "median": 1525,
    "n": 8
   },
   {
    "band": "90-120 m²",
    "median": null,
    "n": 0
   },
   {
    "band": "120 m² et +",
    "median": null,
    "n": 0
   }
  ],
  "Maison": [
   {
    "band": "< 30 m²",
    "median": 8150,
    "n": 1
   },
   {
    "band": "30-60 m²",
    "median": 1810,
    "n": 12
   },
   {
    "band": "60-90 m²",
    "median": 1622,
    "n": 29
   },
   {
    "band": "90-120 m²",
    "median": 1539,
    "n": 34
   },
   {
    "band": "120 m² et +",
    "median": 1350,
    "n": 19
   }
  ]
 },
 "est_hub_arrondissements": false,
 "arrondissements": null,
 "source": {
  "dataset": "Demandes de valeurs foncières (DVF), DGFiP",
  "url": "https://www.data.gouv.fr/fr/datasets/demandes-de-valeurs-foncieres/",
  "licence": "Licence Ouverte 2.0",
  "methodologie": "https://foncierdata.fr/methodologie"
 },
 "page": "https://foncierdata.fr/prix-immobilier/29026-chateaulin"
}