{
 "code_insee": "91377",
 "nom": "Massy",
 "departement": "91",
 "annee_reference": 2025,
 "prix_m2_median": 4162,
 "prix_m2_median_appartement": 4110,
 "prix_m2_median_appartement_yoy_pct": 3.3,
 "prix_m2_median_maison": 4492,
 "prix_m2_median_maison_yoy_pct": -3.9,
 "prix_vente_median": 254000,
 "ventes_annee_reference": 499,
 "ventes_5_ans": 2870,
 "fiabilite": "Forte",
 "series_annuelles": [
  {
   "annee": 2021,
   "apt": 3978,
   "apt_n": 574,
   "maison": 4899,
   "maison_n": 86
  },
  {
   "annee": 2022,
   "apt": 4401,
   "apt_n": 601,
   "maison": 5124,
   "maison_n": 80
  },
  {
   "annee": 2023,
   "apt": 4222,
   "apt_n": 498,
   "maison": 5351,
   "maison_n": 45
  },
  {
   "annee": 2024,
   "apt": 3977,
   "apt_n": 429,
   "maison": 4672,
   "maison_n": 58
  },
  {
   "annee": 2025,
   "apt": 4110,
   "apt_n": 434,
   "maison": 4492,
   "maison_n": 65
  }
 ],
 "tranches_surface": {
  "Appartement": [
   {
    "band": "< 30 m²",
    "median": 5239,
    "n": 36
   },
   {
    "band": "30-60 m²",
    "median": 4517,
    "n": 279
   },
   {
    "band": "60-90 m²",
    "median": 3689,
    "n": 457
   },
   {
    "band": "90-120 m²",
    "median": 2944,
    "n": 87
   },
   {
    "band": "120 m² et +",
    "median": 2651,
    "n": 4
   }
  ],
  "Maison": [
   {
    "band": "< 30 m²",
    "median": 12480,
    "n": 1
   },
   {
    "band": "30-60 m²",
    "median": 5508,
    "n": 11
   },
   {
    "band": "60-90 m²",
    "median": 5081,
    "n": 52
   },
   {
    "band": "90-120 m²",
    "median": 4273,
    "n": 37
   },
   {
    "band": "120 m² et +",
    "median": 3994,
    "n": 22
   }
  ]
 },
 "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/91377-massy"
}