{
  "table": "rent-increase-calculator-rules",
  "schema": 1,
  "version": "2026-11-11.2",
  "title": "Rent increase rules: French IRL revision and UK notice rules",
  "doc": "Rule table read by the rent-increase-calculator handler (ctx.data['rent-increase-calculator-rules']). France: the rent reference index (IRL) published by INSEE each quarter, in its three series (mainland France, Corsica, and the overseas regions and departments governed by article 73 of the Constitution), the quarters the calculator offers as the new index, the energy-rating rent freeze and the revision rules. United Kingdom: the notice and frequency rules for a private tenancy in each nation. Index values are final INSEE values and are never revised, so each has valid_until null; the table as a whole is valid until the day before INSEE publishes the next quarter (the 4th quarter of 2026, around 15 January 2027), when that quarter has to be added to the offered list. Every value carries source_url (primary official source), source_date (that source's own date), retrieved (the day it was read there), valid_from and valid_until (null: in force until changed).",
  "reviewed_on": "2026-11-11",
  "reviewed_by": "apps-calculators agent (automated research against official sources: INSEE BDM SDMX series, Service-Public.gouv.fr, GOV.UK and legislation.gov.uk); owner review pending",
  "valid_from": "2026-10-15",
  "valid_until": "2027-01-14",
  "locale_country": {
    "fr-FR": "FR",
    "en-GB": "GB"
  },
  "countries": {
    "FR": {
      "currency": "EUR",
      "payments_per_year": 12,
      "rounding": {
        "rule": "Revised rent = current rent × new index ÷ index of the same quarter one year earlier, rounded to the nearest cent (a half cent rounds up).",
        "source_url": "https://www.service-public.gouv.fr/particuliers/vosdroits/F13723",
        "source_date": "2026-10-15",
        "retrieved": "2026-11-11",
        "valid_from": null,
        "valid_until": null
      },
      "zones": [
        {
          "id": "metropole",
          "name": {
            "fr-FR": "métropole hors Corse",
            "en-GB": "mainland France"
          },
          "series": "001515333",
          "source_url": "https://www.insee.fr/fr/statistiques/serie/001515333",
          "source_date": "2026-10-15",
          "retrieved": "2026-11-11"
        },
        {
          "id": "corse",
          "name": {
            "fr-FR": "Corse",
            "en-GB": "Corsica"
          },
          "series": "010760507",
          "source_url": "https://www.insee.fr/fr/statistiques/serie/010760507",
          "source_date": "2026-10-15",
          "retrieved": "2026-11-11"
        },
        {
          "id": "dom",
          "name": {
            "fr-FR": "outre-mer",
            "en-GB": "overseas France"
          },
          "series": "010760509",
          "source_url": "https://www.insee.fr/fr/statistiques/serie/010760509",
          "source_date": "2026-10-15",
          "retrieved": "2026-11-11"
        }
      ],
      "irl": [
        { "id": "2026-T3", "year": 2026, "quarter": 3, "published_jo": "2026-10-16", "variation": 1.57, "values": { "metropole": 148.06, "corse": 143.80, "dom": 145.21 }, "valid_from": "2026-10-15", "valid_until": null },
        { "id": "2026-T2", "year": 2026, "quarter": 2, "published_jo": "2026-07-12", "variation": 1.15, "values": { "metropole": 148.37, "corse": 146.22, "dom": 146.94 }, "valid_from": "2026-07-10", "valid_until": null },
        { "id": "2026-T1", "year": 2026, "quarter": 1, "published_jo": "2026-04-16", "variation": 0.78, "values": { "metropole": 146.60, "corse": 142.38, "dom": 143.78 }, "valid_from": "2026-04-15", "valid_until": null },
        { "id": "2025-T4", "year": 2025, "quarter": 4, "published_jo": "2026-01-16", "variation": 0.79, "values": { "metropole": 145.78, "corse": 141.59, "dom": 142.98 }, "valid_from": "2026-01-15", "valid_until": null },
        { "id": "2025-T3", "year": 2025, "quarter": 3, "published_jo": "2025-10-17", "variation": 0.87, "values": { "metropole": 145.77, "corse": 141.58, "dom": 142.97 }, "valid_from": "2025-10-15", "valid_until": null },
        { "id": "2025-T2", "year": 2025, "quarter": 2, "published_jo": "2025-07-13", "variation": 1.04, "values": { "metropole": 146.68, "corse": 144.56, "dom": 145.27 }, "valid_from": "2025-07-11", "valid_until": null },
        { "id": "2025-T1", "year": 2025, "quarter": 1, "published_jo": "2025-04-16", "variation": 1.40, "values": { "metropole": 145.47, "corse": 141.28, "dom": 142.67 }, "valid_from": "2025-04-16", "valid_until": null },
        { "id": "2024-T4", "year": 2024, "quarter": 4, "published_jo": "2025-01-16", "variation": 1.82, "values": { "metropole": 144.64, "corse": 140.48, "dom": 141.86 }, "valid_from": "2025-01-16", "valid_until": null },
        { "id": "2024-T3", "year": 2024, "quarter": 3, "published_jo": "2024-10-16", "variation": 2.47, "values": { "metropole": 144.51, "corse": 140.36, "dom": 141.74 }, "valid_from": "2024-10-16", "valid_until": null },
        { "id": "2024-T2", "year": 2024, "quarter": 2, "published_jo": "2024-07-18", "variation": 3.26, "values": { "metropole": 145.17, "corse": 143.07, "dom": 143.77 }, "valid_from": "2024-07-18", "valid_until": null },
        { "id": "2024-T1", "year": 2024, "quarter": 1, "published_jo": "2024-06-01", "variation": null, "values": { "metropole": 143.46, "corse": 139.33, "dom": 140.70 }, "valid_from": "2024-06-01", "valid_until": null },
        { "id": "2023-T4", "year": 2023, "quarter": 4, "published_jo": "2024-01-18", "variation": null, "values": { "metropole": 142.06, "corse": 137.97, "dom": 139.32 }, "valid_from": "2024-01-18", "valid_until": null }
      ],
      "irl_doc": "values: INSEE BDM series 001515333 (mainland), 010760507 (Corsica) and 010760509 (overseas), read through the SDMX service https://bdm.insee.fr/series/sdmx/data/SERIES_BDM/<series> on 2026-11-11 (LAST_UPDATE 2026-10-15); published_jo is the series' DATE_JO, the Journal officiel date; valid_from is INSEE's own publication date where Service-Public.fr lists it (the six latest quarters) and the Journal officiel date otherwise. variation is INSEE's published year-on-year change in %, the same in the three series since the 2nd quarter of 2024 (series 001515334, 010760508, 010760510); it is null for the quarters capped by loi n° 2022-1158, where the three series differ (3.5 % mainland, 2 % Corsica, 2.5 % overseas). The calculator never uses variation: it divides the two index values, as Service-Public.fr does.",
      "offered": ["2026-T3", "2026-T2", "2026-T1", "2025-T4", "2025-T3", "2025-T2", "2025-T1", "2024-T4"],
      "offered_doc": "The quarters offered as the new index: every quarter whose revision a landlord could still claim on 2026-11-11 (a revision is lost one year after its date, so the oldest new index still in play is the one last published on 2025-11-11, i.e. the 4th quarter of 2024 for a lease that names that quarter). The old index is always the same quarter one year earlier, so the table holds four more quarters.",
      "dpe_freeze": {
        "classes": ["F", "G"],
        "from": {
          "metropole": "2022-08-24",
          "corse": "2022-08-24",
          "dom": "2024-07-01"
        },
        "rule": "No revision of the rent of a home rated F or G on its energy performance certificate (DPE) when the lease was signed, renewed or tacitly renewed on or after 24 August 2022 in mainland France (Corsica included), or on or after 1 July 2024 in Guadeloupe, French Guiana, Martinique, Réunion and Mayotte.",
        "legal_basis": "Loi n° 89-462 du 6 juillet 1989, art. 17-1",
        "source_url": "https://www.service-public.gouv.fr/particuliers/vosdroits/F13723",
        "source_date": "2026-10-15",
        "retrieved": "2026-11-11",
        "valid_from": "2022-08-24",
        "valid_until": null
      },
      "revision_rules": {
        "rule": "A rent can be revised once a year, only if the lease has a revision clause. The revision applies from the landlord's request, never retroactively, and is lost if it is not claimed within one year of the revision date.",
        "legal_basis": "Loi n° 89-462 du 6 juillet 1989, art. 17-1 and 7-1",
        "source_url": "https://www.service-public.gouv.fr/particuliers/vosdroits/F13723",
        "source_date": "2026-10-15",
        "retrieved": "2026-11-11",
        "valid_from": null,
        "valid_until": null
      }
    },
    "GB": {
      "currency": "GBP",
      "nations": [
        {
          "id": "england",
          "notice_months": 2,
          "rule": "Assured periodic tenancy: the landlord can raise the rent once a year, not in the first year, with at least two months' notice on Form 4A (section 13 of the Housing Act 1988 as amended by the Renters' Rights Act 2025). A tenant who thinks the new rent is above the open market rent can apply to the First-tier Tribunal.",
          "source_url": "https://www.gov.uk/assured-periodic-tenancies-tenants/rent-increases",
          "source_date": "2026-04-07",
          "law_url": "https://www.legislation.gov.uk/ukpga/1988/50/section/13",
          "retrieved": "2026-11-11",
          "valid_from": "2026-05-01",
          "valid_until": null
        },
        {
          "id": "wales",
          "notice_months": 2,
          "rule": "Periodic standard occupation contract: the landlord varies the rent by notice given at least two months before the new rent starts; after a rent change, the next cannot take effect less than one year after it (Renting Homes (Wales) Act 2016, section 123).",
          "source_url": "https://www.legislation.gov.uk/anaw/2016/1/section/123",
          "source_date": "2026-11-10",
          "retrieved": "2026-11-11",
          "valid_from": "2022-12-01",
          "valid_until": null
        },
        {
          "id": "scotland",
          "notice_months": 3,
          "rule": "Private residential tenancy: the rent can go up at most once in 12 months (section 19), by a rent-increase notice given at least three months before the increase (section 22); the tenant can refer it to a rent officer within 21 days of receiving it (section 24). Under the Housing (Scotland) Act 2025, Scottish Ministers can designate rent control areas (section 9, in force since 1 April 2026).",
          "source_url": "https://www.legislation.gov.uk/asp/2016/19/section/22",
          "source_date": "2026-11-06",
          "law_url": "https://www.legislation.gov.uk/asp/2016/19/section/19",
          "retrieved": "2026-11-11",
          "valid_from": "2017-12-01",
          "valid_until": null
        },
        {
          "id": "northern-ireland",
          "notice_months": 3,
          "rule": "Private tenancy: no increase within 12 months of the start of the tenancy or of the last increase (article 5D), and written notice at least three months before the increase (article 5E of the Private Tenancies (Northern Ireland) Order 2006, in operation since 1 April 2025).",
          "source_url": "https://www.legislation.gov.uk/nisi/2006/1459/article/5E",
          "source_date": "2025-04-01",
          "law_url": "https://www.legislation.gov.uk/nisi/2006/1459/article/5D",
          "retrieved": "2026-11-11",
          "valid_from": "2025-04-01",
          "valid_until": null
        }
      ]
    }
  },
  "sources": [
    { "label": "Service-Public.gouv.fr: Indice de référence des loyers (IRL), vérifié le 15 octobre 2026", "url": "https://www.service-public.gouv.fr/particuliers/vosdroits/F13723", "date": "2026-10-15" },
    { "label": "Insee: Indice de référence des loyers (IRL), série 001515333", "url": "https://www.insee.fr/fr/statistiques/serie/001515333", "date": "2026-10-15" },
    { "label": "Insee: IRL dans la collectivité de Corse, série 010760507", "url": "https://www.insee.fr/fr/statistiques/serie/010760507", "date": "2026-10-15" },
    { "label": "Insee: IRL dans les régions et départements d’outre-mer, série 010760509", "url": "https://www.insee.fr/fr/statistiques/serie/010760509", "date": "2026-10-15" },
    { "label": "Insee: Réviser un loyer d’habitation", "url": "https://www.insee.fr/fr/information/1300612", "date": "2025-06-16" },
    { "label": "GOV.UK: Assured periodic tenancies, a guide for tenants: rent increases", "url": "https://www.gov.uk/assured-periodic-tenancies-tenants/rent-increases", "date": "2026-04-07" },
    { "label": "legislation.gov.uk: Housing Act 1988, section 13", "url": "https://www.legislation.gov.uk/ukpga/1988/50/section/13", "date": "2026-11-11" },
    { "label": "legislation.gov.uk: Renting Homes (Wales) Act 2016, section 123", "url": "https://www.legislation.gov.uk/anaw/2016/1/section/123", "date": "2026-11-10" },
    { "label": "legislation.gov.uk: Private Housing (Tenancies) (Scotland) Act 2016, sections 19, 22 and 24", "url": "https://www.legislation.gov.uk/asp/2016/19/section/22", "date": "2026-11-06" },
    { "label": "legislation.gov.uk: Housing (Scotland) Act 2025, section 9", "url": "https://www.legislation.gov.uk/asp/2025/13/section/9", "date": "2026-11-11" },
    { "label": "legislation.gov.uk: Private Tenancies (Northern Ireland) Order 2006, articles 5D and 5E", "url": "https://www.legislation.gov.uk/nisi/2006/1459/article/5E", "date": "2025-04-01" }
  ]
}