{
 "code_insee": "40273",
 "nom": "Saint-Martin-de-Seignanx",
 "departement": "40",
 "annee_reference": 2025,
 "prix_m2_median": 4075,
 "prix_m2_median_appartement": 4038,
 "prix_m2_median_appartement_yoy_pct": 6.8,
 "prix_m2_median_maison": 4076,
 "prix_m2_median_maison_yoy_pct": -1,
 "prix_vente_median": 325000,
 "ventes_annee_reference": 57,
 "ventes_5_ans": 286,
 "fiabilite": "Modérée",
 "derniers_12_mois": {
  "debut": "2025-07-01",
  "fin": "2026-06-30",
  "ventes": 52,
  "prix_m2_median": 3775,
  "prix_m2_median_appartement": 3786,
  "prix_m2_median_appartement_yoy_pct": -4.7,
  "prix_m2_median_maison": 3762,
  "prix_m2_median_maison_yoy_pct": -8.7
 },
 "series_annuelles": [
  {
   "annee": 2021,
   "apt": 3375,
   "apt_n": 20,
   "maison": 3642,
   "maison_n": 20
  },
  {
   "annee": 2022,
   "apt": 3867,
   "apt_n": 29,
   "maison": 4103,
   "maison_n": 35
  },
  {
   "annee": 2023,
   "apt": 4037,
   "apt_n": 22,
   "maison": 4598,
   "maison_n": 26
  },
  {
   "annee": 2024,
   "apt": 3780,
   "apt_n": 13,
   "maison": 4119,
   "maison_n": 41
  },
  {
   "annee": 2025,
   "apt": 4038,
   "apt_n": 26,
   "maison": 4076,
   "maison_n": 31
  }
 ],
 "tranches_surface": {
  "Appartement": [
   {
    "band": "< 30 m²",
    "median": null,
    "n": 0
   },
   {
    "band": "30-60 m²",
    "median": 3973,
    "n": 21
   },
   {
    "band": "60-90 m²",
    "median": 4000,
    "n": 15
   },
   {
    "band": "90-120 m²",
    "median": 3166,
    "n": 2
   },
   {
    "band": "120 m² et +",
    "median": 2815,
    "n": 1
   }
  ],
  "Maison": [
   {
    "band": "< 30 m²",
    "median": null,
    "n": 0
   },
   {
    "band": "30-60 m²",
    "median": 4705,
    "n": 1
   },
   {
    "band": "60-90 m²",
    "median": 4307,
    "n": 20
   },
   {
    "band": "90-120 m²",
    "median": 4042,
    "n": 28
   },
   {
    "band": "120 m² et +",
    "median": 3601,
    "n": 23
   }
  ]
 },
 "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/40273-saint-martin-de-seignanx"
}