{
 "code_insee": "59271",
 "nom": "Grande-Synthe",
 "departement": "59",
 "annee_reference": 2025,
 "prix_m2_median": 1687,
 "prix_m2_median_appartement": 1310,
 "prix_m2_median_appartement_yoy_pct": 22.9,
 "prix_m2_median_maison": 1713,
 "prix_m2_median_maison_yoy_pct": 9.5,
 "prix_vente_median": 140000,
 "ventes_annee_reference": 131,
 "ventes_5_ans": 513,
 "fiabilite": "Forte",
 "series_annuelles": [
  {
   "annee": 2021,
   "apt": 1032,
   "apt_n": 9,
   "maison": 1492,
   "maison_n": 92
  },
  {
   "annee": 2022,
   "apt": 1112,
   "apt_n": 16,
   "maison": 1619,
   "maison_n": 115
  },
  {
   "annee": 2023,
   "apt": 1264,
   "apt_n": 15,
   "maison": 1600,
   "maison_n": 63
  },
  {
   "annee": 2024,
   "apt": 1066,
   "apt_n": 12,
   "maison": 1564,
   "maison_n": 60
  },
  {
   "annee": 2025,
   "apt": 1310,
   "apt_n": 28,
   "maison": 1713,
   "maison_n": 103
  }
 ],
 "tranches_surface": {
  "Appartement": [
   {
    "band": "< 30 m²",
    "median": 14194,
    "n": 1
   },
   {
    "band": "30-60 m²",
    "median": 1962,
    "n": 3
   },
   {
    "band": "60-90 m²",
    "median": 1365,
    "n": 23
   },
   {
    "band": "90-120 m²",
    "median": 1158,
    "n": 11
   },
   {
    "band": "120 m² et +",
    "median": 953,
    "n": 2
   }
  ],
  "Maison": [
   {
    "band": "< 30 m²",
    "median": null,
    "n": 0
   },
   {
    "band": "30-60 m²",
    "median": 1692,
    "n": 2
   },
   {
    "band": "60-90 m²",
    "median": 1703,
    "n": 77
   },
   {
    "band": "90-120 m²",
    "median": 1609,
    "n": 68
   },
   {
    "band": "120 m² et +",
    "median": 1662,
    "n": 16
   }
  ]
 },
 "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/59271-grande-synthe"
}