{
 "code_insee": "85047",
 "nom": "Challans",
 "departement": "85",
 "annee_reference": 2025,
 "prix_m2_median": 2627,
 "prix_m2_median_appartement": 2706,
 "prix_m2_median_appartement_yoy_pct": 6.9,
 "prix_m2_median_maison": 2612,
 "prix_m2_median_maison_yoy_pct": -1.2,
 "prix_vente_median": 211500,
 "ventes_annee_reference": 302,
 "ventes_5_ans": 1510,
 "fiabilite": "Forte",
 "series_annuelles": [
  {
   "annee": 2021,
   "apt": 2329,
   "apt_n": 83,
   "maison": 2481,
   "maison_n": 290
  },
  {
   "annee": 2022,
   "apt": 2453,
   "apt_n": 69,
   "maison": 2846,
   "maison_n": 239
  },
  {
   "annee": 2023,
   "apt": 2612,
   "apt_n": 74,
   "maison": 2707,
   "maison_n": 196
  },
  {
   "annee": 2024,
   "apt": 2532,
   "apt_n": 60,
   "maison": 2644,
   "maison_n": 197
  },
  {
   "annee": 2025,
   "apt": 2706,
   "apt_n": 60,
   "maison": 2612,
   "maison_n": 242
  }
 ],
 "tranches_surface": {
  "Appartement": [
   {
    "band": "< 30 m²",
    "median": 3323,
    "n": 6
   },
   {
    "band": "30-60 m²",
    "median": 2600,
    "n": 71
   },
   {
    "band": "60-90 m²",
    "median": 2507,
    "n": 39
   },
   {
    "band": "90-120 m²",
    "median": 2683,
    "n": 3
   },
   {
    "band": "120 m² et +",
    "median": 3083,
    "n": 1
   }
  ],
  "Maison": [
   {
    "band": "< 30 m²",
    "median": 4000,
    "n": 1
   },
   {
    "band": "30-60 m²",
    "median": 2711,
    "n": 37
   },
   {
    "band": "60-90 m²",
    "median": 2697,
    "n": 189
   },
   {
    "band": "90-120 m²",
    "median": 2609,
    "n": 138
   },
   {
    "band": "120 m² et +",
    "median": 2339,
    "n": 74
   }
  ]
 },
 "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/85047-challans"
}