{
 "code_insee": "91421",
 "nom": "Montgeron",
 "departement": "91",
 "annee_reference": 2025,
 "prix_m2_median": 3693,
 "prix_m2_median_appartement": 3635,
 "prix_m2_median_appartement_yoy_pct": 1.1,
 "prix_m2_median_maison": 3750,
 "prix_m2_median_maison_yoy_pct": -3,
 "prix_vente_median": 265000,
 "ventes_annee_reference": 237,
 "ventes_5_ans": 1251,
 "fiabilite": "Forte",
 "series_annuelles": [
  {
   "annee": 2021,
   "apt": 3938,
   "apt_n": 121,
   "maison": 4258,
   "maison_n": 177
  },
  {
   "annee": 2022,
   "apt": 4045,
   "apt_n": 132,
   "maison": 4357,
   "maison_n": 164
  },
  {
   "annee": 2023,
   "apt": 3603,
   "apt_n": 107,
   "maison": 4078,
   "maison_n": 123
  },
  {
   "annee": 2024,
   "apt": 3597,
   "apt_n": 82,
   "maison": 3866,
   "maison_n": 108
  },
  {
   "annee": 2025,
   "apt": 3635,
   "apt_n": 108,
   "maison": 3750,
   "maison_n": 129
  }
 ],
 "tranches_surface": {
  "Appartement": [
   {
    "band": "< 30 m²",
    "median": 4525,
    "n": 27
   },
   {
    "band": "30-60 m²",
    "median": 3790,
    "n": 80
   },
   {
    "band": "60-90 m²",
    "median": 3205,
    "n": 75
   },
   {
    "band": "90-120 m²",
    "median": 2650,
    "n": 8
   },
   {
    "band": "120 m² et +",
    "median": null,
    "n": 0
   }
  ],
  "Maison": [
   {
    "band": "< 30 m²",
    "median": 7850,
    "n": 1
   },
   {
    "band": "30-60 m²",
    "median": 4750,
    "n": 33
   },
   {
    "band": "60-90 m²",
    "median": 3938,
    "n": 94
   },
   {
    "band": "90-120 m²",
    "median": 3615,
    "n": 64
   },
   {
    "band": "120 m² et +",
    "median": 3195,
    "n": 45
   }
  ]
 },
 "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/91421-montgeron"
}