{
 "code_insee": "78672",
 "nom": "Villennes-sur-Seine",
 "departement": "78",
 "annee_reference": 2025,
 "prix_m2_median": 4398,
 "prix_m2_median_appartement": 4186,
 "prix_m2_median_appartement_yoy_pct": 0.8,
 "prix_m2_median_maison": 5275,
 "prix_m2_median_maison_yoy_pct": 0.6,
 "prix_vente_median": 445000,
 "ventes_annee_reference": 57,
 "ventes_5_ans": 301,
 "fiabilite": "Modérée",
 "derniers_12_mois": {
  "debut": "2025-07-01",
  "fin": "2026-06-30",
  "ventes": 54,
  "prix_m2_median": 4260,
  "prix_m2_median_appartement": 4018,
  "prix_m2_median_appartement_yoy_pct": -3.5,
  "prix_m2_median_maison": 4888,
  "prix_m2_median_maison_yoy_pct": -7.1
 },
 "series_annuelles": [
  {
   "annee": 2021,
   "apt": 4200,
   "apt_n": 22,
   "maison": 5711,
   "maison_n": 31
  },
  {
   "annee": 2022,
   "apt": 4253,
   "apt_n": 33,
   "maison": 5731,
   "maison_n": 38
  },
  {
   "annee": 2023,
   "apt": 4087,
   "apt_n": 28,
   "maison": 5385,
   "maison_n": 25
  },
  {
   "annee": 2024,
   "apt": 4153,
   "apt_n": 20,
   "maison": 5245,
   "maison_n": 25
  },
  {
   "annee": 2025,
   "apt": 4186,
   "apt_n": 25,
   "maison": 5275,
   "maison_n": 32
  }
 ],
 "tranches_surface": {
  "Appartement": [
   {
    "band": "< 30 m²",
    "median": 4500,
    "n": 7
   },
   {
    "band": "30-60 m²",
    "median": 4103,
    "n": 8
   },
   {
    "band": "60-90 m²",
    "median": 4273,
    "n": 21
   },
   {
    "band": "90-120 m²",
    "median": 4163,
    "n": 6
   },
   {
    "band": "120 m² et +",
    "median": 2792,
    "n": 3
   }
  ],
  "Maison": [
   {
    "band": "< 30 m²",
    "median": 6193,
    "n": 2
   },
   {
    "band": "30-60 m²",
    "median": 11566,
    "n": 5
   },
   {
    "band": "60-90 m²",
    "median": 6129,
    "n": 7
   },
   {
    "band": "90-120 m²",
    "median": 5232,
    "n": 16
   },
   {
    "band": "120 m² et +",
    "median": 4724,
    "n": 27
   }
  ]
 },
 "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/78672-villennes-sur-seine"
}