{
  "sources": {
    "bdnb": "https://open-data.s3.fr-par.scw.cloud/bdnb_millesime_2026-02-a/millesime_2026-02-a_dep53/open_data_millesime_2026-02-a_dep53_csv.zip",
    "bdnb_date": "2026-10-08T15:20:50+00:00",
    "dpe_date": "2026-10-11T12:23:06.429585+00:00",
    "millesime": "2026-02-a",
    "licence": "Licence Ouverte 2.0"
  },
  "methode": "Groupes BDNB résidentiels individuel et collectif. Cohortes par usage principal, année foncière et matériau exact ; combinaisons de matériaux exclues. DPE ADEME représentatif sélectionné par la BDNB, arrêté 2021 uniquement, étiquette recalculée au coefficient 2026. Les groupes sans DPE restent dans le parc, hors du dénominateur F/G.",
  "cohortes": [
    {
      "slug": "maison-pierre-avant-1948",
      "titre": "Maisons en pierre avant 1948",
      "usage": "Résidentiel individuel",
      "annee_min": 1000,
      "annee_max": 1947,
      "materiau": "PIERRE",
      "agglo": {
        "groupes": 4321,
        "parc_residentiel": 39014,
        "part_parc_pct": 11.08,
        "dpe": {
          "A": 5,
          "B": 20,
          "C": 173,
          "D": 367,
          "E": 149,
          "F": 72,
          "G": 29
        },
        "dpe_total": 815,
        "sans_dpe_2021": 3506,
        "couverture_dpe_pct": 18.86,
        "fg": 101,
        "fg_pct": 12.39
      },
      "mayenne": {
        "groupes": 30107,
        "parc_residentiel": 131788,
        "part_parc_pct": 22.85,
        "dpe": {
          "A": 31,
          "B": 125,
          "C": 774,
          "D": 1428,
          "E": 932,
          "F": 584,
          "G": 305
        },
        "dpe_total": 4179,
        "sans_dpe_2021": 25928,
        "couverture_dpe_pct": 13.88,
        "fg": 889,
        "fg_pct": 21.27
      }
    },
    {
      "slug": "maison-agglomere-1948-1974",
      "titre": "Maisons en aggloméré de 1948 à 1974",
      "usage": "Résidentiel individuel",
      "annee_min": 1948,
      "annee_max": 1974,
      "materiau": "AGGLOMERE",
      "agglo": {
        "groupes": 2534,
        "parc_residentiel": 39014,
        "part_parc_pct": 6.5,
        "dpe": {
          "A": 7,
          "B": 8,
          "C": 80,
          "D": 170,
          "E": 137,
          "F": 58,
          "G": 19
        },
        "dpe_total": 479,
        "sans_dpe_2021": 2055,
        "couverture_dpe_pct": 18.9,
        "fg": 77,
        "fg_pct": 16.08
      },
      "mayenne": {
        "groupes": 5784,
        "parc_residentiel": 131788,
        "part_parc_pct": 4.39,
        "dpe": {
          "A": 11,
          "B": 30,
          "C": 180,
          "D": 370,
          "E": 333,
          "F": 166,
          "G": 53
        },
        "dpe_total": 1143,
        "sans_dpe_2021": 4641,
        "couverture_dpe_pct": 19.76,
        "fg": 219,
        "fg_pct": 19.16
      }
    },
    {
      "slug": "maison-beton-1948-1974",
      "titre": "Maisons en béton de 1948 à 1974",
      "usage": "Résidentiel individuel",
      "annee_min": 1948,
      "annee_max": 1974,
      "materiau": "BETON",
      "agglo": {
        "groupes": 555,
        "parc_residentiel": 39014,
        "part_parc_pct": 1.42,
        "dpe": {
          "A": 0,
          "B": 3,
          "C": 18,
          "D": 41,
          "E": 33,
          "F": 8,
          "G": 1
        },
        "dpe_total": 104,
        "sans_dpe_2021": 451,
        "couverture_dpe_pct": 18.74,
        "fg": 9,
        "fg_pct": 8.65
      },
      "mayenne": {
        "groupes": 1017,
        "parc_residentiel": 131788,
        "part_parc_pct": 0.77,
        "dpe": {
          "A": 2,
          "B": 4,
          "C": 31,
          "D": 85,
          "E": 60,
          "F": 27,
          "G": 3
        },
        "dpe_total": 212,
        "sans_dpe_2021": 805,
        "couverture_dpe_pct": 20.85,
        "fg": 30,
        "fg_pct": 14.15
      }
    },
    {
      "slug": "maison-agglomere-1975-1990",
      "titre": "Maisons en aggloméré de 1975 à 1990",
      "usage": "Résidentiel individuel",
      "annee_min": 1975,
      "annee_max": 1990,
      "materiau": "AGGLOMERE",
      "agglo": {
        "groupes": 4701,
        "parc_residentiel": 39014,
        "part_parc_pct": 12.05,
        "dpe": {
          "A": 9,
          "B": 14,
          "C": 155,
          "D": 331,
          "E": 118,
          "F": 14,
          "G": 1
        },
        "dpe_total": 642,
        "sans_dpe_2021": 4059,
        "couverture_dpe_pct": 13.66,
        "fg": 15,
        "fg_pct": 2.34
      },
      "mayenne": {
        "groupes": 12871,
        "parc_residentiel": 131788,
        "part_parc_pct": 9.77,
        "dpe": {
          "A": 22,
          "B": 39,
          "C": 421,
          "D": 1065,
          "E": 403,
          "F": 59,
          "G": 13
        },
        "dpe_total": 2022,
        "sans_dpe_2021": 10849,
        "couverture_dpe_pct": 15.71,
        "fg": 72,
        "fg_pct": 3.56
      }
    },
    {
      "slug": "maison-beton-1975-1990",
      "titre": "Maisons en béton de 1975 à 1990",
      "usage": "Résidentiel individuel",
      "annee_min": 1975,
      "annee_max": 1990,
      "materiau": "BETON",
      "agglo": {
        "groupes": 1029,
        "parc_residentiel": 39014,
        "part_parc_pct": 2.64,
        "dpe": {
          "A": 1,
          "B": 1,
          "C": 52,
          "D": 76,
          "E": 19,
          "F": 5,
          "G": 0
        },
        "dpe_total": 154,
        "sans_dpe_2021": 875,
        "couverture_dpe_pct": 14.97,
        "fg": 5,
        "fg_pct": 3.25
      },
      "mayenne": {
        "groupes": 2721,
        "parc_residentiel": 131788,
        "part_parc_pct": 2.06,
        "dpe": {
          "A": 3,
          "B": 9,
          "C": 132,
          "D": 357,
          "E": 77,
          "F": 8,
          "G": 0
        },
        "dpe_total": 586,
        "sans_dpe_2021": 2135,
        "couverture_dpe_pct": 21.54,
        "fg": 8,
        "fg_pct": 1.37
      }
    },
    {
      "slug": "immeuble-pierre-avant-1948",
      "titre": "Immeubles résidentiels en pierre avant 1948",
      "usage": "Résidentiel collectif",
      "annee_min": 1000,
      "annee_max": 1947,
      "materiau": "PIERRE",
      "agglo": {
        "groupes": 558,
        "parc_residentiel": 39014,
        "part_parc_pct": 1.43,
        "dpe": {
          "A": 1,
          "B": 4,
          "C": 87,
          "D": 156,
          "E": 97,
          "F": 29,
          "G": 9
        },
        "dpe_total": 383,
        "sans_dpe_2021": 175,
        "couverture_dpe_pct": 68.64,
        "fg": 38,
        "fg_pct": 9.92
      },
      "mayenne": {
        "groupes": 939,
        "parc_residentiel": 131788,
        "part_parc_pct": 0.71,
        "dpe": {
          "A": 1,
          "B": 8,
          "C": 124,
          "D": 242,
          "E": 127,
          "F": 46,
          "G": 17
        },
        "dpe_total": 565,
        "sans_dpe_2021": 374,
        "couverture_dpe_pct": 60.17,
        "fg": 63,
        "fg_pct": 11.15
      }
    }
  ]
}