{
 "code_insee": "78638",
 "nom": "Vaux-sur-Seine",
 "departement": "78",
 "annee_reference": 2025,
 "prix_m2_median": 2922,
 "prix_m2_median_appartement": 2549,
 "prix_m2_median_appartement_yoy_pct": 5.4,
 "prix_m2_median_maison": 3042,
 "prix_m2_median_maison_yoy_pct": -0.4,
 "prix_vente_median": 237500,
 "ventes_annee_reference": 49,
 "ventes_5_ans": 224,
 "fiabilite": "Modérée",
 "derniers_12_mois": {
  "debut": "2025-07-01",
  "fin": "2026-06-30",
  "ventes": 42,
  "prix_m2_median": 3030,
  "prix_m2_median_appartement": null,
  "prix_m2_median_appartement_yoy_pct": null,
  "prix_m2_median_maison": 3088,
  "prix_m2_median_maison_yoy_pct": -5.2
 },
 "series_annuelles": [
  {
   "annee": 2021,
   "apt": 2668,
   "apt_n": 10,
   "maison": 3827,
   "maison_n": 24
  },
  {
   "annee": 2022,
   "apt": 3240,
   "apt_n": 13,
   "maison": 3088,
   "maison_n": 42
  },
  {
   "annee": 2023,
   "apt": 3083,
   "apt_n": 16,
   "maison": 3367,
   "maison_n": 18
  },
  {
   "annee": 2024,
   "apt": 2419,
   "apt_n": 7,
   "maison": 3054,
   "maison_n": 31
  },
  {
   "annee": 2025,
   "apt": 2549,
   "apt_n": 11,
   "maison": 3042,
   "maison_n": 38
  }
 ],
 "tranches_surface": {
  "Appartement": [
   {
    "band": "< 30 m²",
    "median": null,
    "n": 0
   },
   {
    "band": "30-60 m²",
    "median": 2647,
    "n": 11
   },
   {
    "band": "60-90 m²",
    "median": 2633,
    "n": 2
   },
   {
    "band": "90-120 m²",
    "median": 1933,
    "n": 5
   },
   {
    "band": "120 m² et +",
    "median": null,
    "n": 0
   }
  ],
  "Maison": [
   {
    "band": "< 30 m²",
    "median": 1169,
    "n": 1
   },
   {
    "band": "30-60 m²",
    "median": 4286,
    "n": 9
   },
   {
    "band": "60-90 m²",
    "median": 3329,
    "n": 17
   },
   {
    "band": "90-120 m²",
    "median": 2922,
    "n": 21
   },
   {
    "band": "120 m² et +",
    "median": 2719,
    "n": 21
   }
  ]
 },
 "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/78638-vaux-sur-seine"
}