{
 "code_insee": "91471",
 "nom": "Orsay",
 "departement": "91",
 "annee_reference": 2025,
 "prix_m2_median": 4194,
 "prix_m2_median_appartement": 4179,
 "prix_m2_median_appartement_yoy_pct": 6,
 "prix_m2_median_maison": 4215,
 "prix_m2_median_maison_yoy_pct": 0.2,
 "prix_vente_median": 314100,
 "ventes_annee_reference": 166,
 "ventes_5_ans": 912,
 "fiabilite": "Forte",
 "series_annuelles": [
  {
   "annee": 2021,
   "apt": 4333,
   "apt_n": 87,
   "maison": 4415,
   "maison_n": 123
  },
  {
   "annee": 2022,
   "apt": 4660,
   "apt_n": 102,
   "maison": 4906,
   "maison_n": 109
  },
  {
   "annee": 2023,
   "apt": 4527,
   "apt_n": 88,
   "maison": 4304,
   "maison_n": 90
  },
  {
   "annee": 2024,
   "apt": 3943,
   "apt_n": 70,
   "maison": 4206,
   "maison_n": 77
  },
  {
   "annee": 2025,
   "apt": 4179,
   "apt_n": 76,
   "maison": 4215,
   "maison_n": 90
  }
 ],
 "tranches_surface": {
  "Appartement": [
   {
    "band": "< 30 m²",
    "median": 5370,
    "n": 29
   },
   {
    "band": "30-60 m²",
    "median": 4067,
    "n": 62
   },
   {
    "band": "60-90 m²",
    "median": 3696,
    "n": 48
   },
   {
    "band": "90-120 m²",
    "median": 3946,
    "n": 6
   },
   {
    "band": "120 m² et +",
    "median": 3189,
    "n": 1
   }
  ],
  "Maison": [
   {
    "band": "< 30 m²",
    "median": 9231,
    "n": 2
   },
   {
    "band": "30-60 m²",
    "median": 5700,
    "n": 13
   },
   {
    "band": "60-90 m²",
    "median": 4775,
    "n": 48
   },
   {
    "band": "90-120 m²",
    "median": 4091,
    "n": 53
   },
   {
    "band": "120 m² et +",
    "median": 3791,
    "n": 51
   }
  ]
 },
 "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/91471-orsay"
}