{
 "code_insee": "91021",
 "nom": "Arpajon",
 "departement": "91",
 "annee_reference": 2025,
 "prix_m2_median": 3029,
 "prix_m2_median_appartement": 3037,
 "prix_m2_median_appartement_yoy_pct": -1.9,
 "prix_m2_median_maison": 2963,
 "prix_m2_median_maison_yoy_pct": -5.4,
 "prix_vente_median": 167000,
 "ventes_annee_reference": 140,
 "ventes_5_ans": 859,
 "fiabilite": "Forte",
 "series_annuelles": [
  {
   "annee": 2021,
   "apt": 3278,
   "apt_n": 144,
   "maison": 3506,
   "maison_n": 54
  },
  {
   "annee": 2022,
   "apt": 3342,
   "apt_n": 179,
   "maison": 3286,
   "maison_n": 43
  },
  {
   "annee": 2023,
   "apt": 3208,
   "apt_n": 138,
   "maison": 3400,
   "maison_n": 30
  },
  {
   "annee": 2024,
   "apt": 3097,
   "apt_n": 102,
   "maison": 3133,
   "maison_n": 29
  },
  {
   "annee": 2025,
   "apt": 3037,
   "apt_n": 106,
   "maison": 2963,
   "maison_n": 34
  }
 ],
 "tranches_surface": {
  "Appartement": [
   {
    "band": "< 30 m²",
    "median": 3824,
    "n": 22
   },
   {
    "band": "30-60 m²",
    "median": 3117,
    "n": 115
   },
   {
    "band": "60-90 m²",
    "median": 3015,
    "n": 58
   },
   {
    "band": "90-120 m²",
    "median": 2426,
    "n": 13
   },
   {
    "band": "120 m² et +",
    "median": null,
    "n": 0
   }
  ],
  "Maison": [
   {
    "band": "< 30 m²",
    "median": 9600,
    "n": 1
   },
   {
    "band": "30-60 m²",
    "median": 4049,
    "n": 7
   },
   {
    "band": "60-90 m²",
    "median": 3186,
    "n": 19
   },
   {
    "band": "90-120 m²",
    "median": 2802,
    "n": 23
   },
   {
    "band": "120 m² et +",
    "median": 2538,
    "n": 13
   }
  ]
 },
 "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/91021-arpajon"
}