{
 "code_insee": "29284",
 "nom": "Treffiagat",
 "departement": "29",
 "annee_reference": 2025,
 "prix_m2_median": 2344,
 "prix_m2_median_appartement": 1716,
 "prix_m2_median_appartement_yoy_pct": -30.9,
 "prix_m2_median_maison": 2381,
 "prix_m2_median_maison_yoy_pct": -7.1,
 "prix_vente_median": 234000,
 "ventes_annee_reference": 33,
 "ventes_5_ans": 172,
 "fiabilite": "Modérée",
 "derniers_12_mois": {
  "debut": "2025-07-01",
  "fin": "2026-06-30",
  "ventes": 33,
  "prix_m2_median": 2310,
  "prix_m2_median_appartement": null,
  "prix_m2_median_appartement_yoy_pct": null,
  "prix_m2_median_maison": 2310,
  "prix_m2_median_maison_yoy_pct": -4.6
 },
 "series_annuelles": [
  {
   "annee": 2021,
   "apt": null,
   "apt_n": 0,
   "maison": 2063,
   "maison_n": 20
  },
  {
   "annee": 2022,
   "apt": null,
   "apt_n": 0,
   "maison": 2542,
   "maison_n": 42
  },
  {
   "annee": 2023,
   "apt": null,
   "apt_n": 0,
   "maison": 2569,
   "maison_n": 28
  },
  {
   "annee": 2024,
   "apt": 2482,
   "apt_n": 1,
   "maison": 2563,
   "maison_n": 33
  },
  {
   "annee": 2025,
   "apt": 1716,
   "apt_n": 1,
   "maison": 2381,
   "maison_n": 32
  }
 ],
 "tranches_surface": {
  "Appartement": [
   {
    "band": "< 30 m²",
    "median": null,
    "n": 0
   },
   {
    "band": "30-60 m²",
    "median": 2482,
    "n": 1
   },
   {
    "band": "60-90 m²",
    "median": 1716,
    "n": 1
   },
   {
    "band": "90-120 m²",
    "median": null,
    "n": 0
   },
   {
    "band": "120 m² et +",
    "median": null,
    "n": 0
   }
  ],
  "Maison": [
   {
    "band": "< 30 m²",
    "median": 6462,
    "n": 1
   },
   {
    "band": "30-60 m²",
    "median": 2091,
    "n": 5
   },
   {
    "band": "60-90 m²",
    "median": 2781,
    "n": 30
   },
   {
    "band": "90-120 m²",
    "median": 2421,
    "n": 19
   },
   {
    "band": "120 m² et +",
    "median": 2051,
    "n": 10
   }
  ]
 },
 "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/29284-treffiagat"
}