{
  "url": "https://openlegislation.uk/building-act-1984/section-91",
  "json_url": "https://openlegislation.uk/building-act-1984/section-91.json",
  "legislation": "ukpga/1984/55",
  "legislation_title": "Building Act 1984",
  "legislation_url": "https://openlegislation.uk/building-act-1984",
  "path": "section/91",
  "kind": "section",
  "number": "91",
  "heading": "Duties of local authorities and the regulator.",
  "text": "(1) It is the duty of local authorities to carry this Act into execution in their areas, subject to—\n(za) subsection (3) of this section and regulations under section 91ZD,\n(a) the provisions of this Act relating to certain other authorities or persons,\n(b) the provisions of Part I of the Public Health Act 1936 relating to united districts and joint boards,\n(c) section 151 of the Local Government, Planning and Land Act 1980 (urban development areas), and\n(d) section 1(3) of the Public Health (Control of Disease) Act 1984 (port health authorities).\n(2) It is the function of local authorities to enforce building regulations in their areas, subject to —\n(a) subsection (3) of this section,\n(b) sections 5(3), 48(1) and 53(2), and\n(c) regulations under section 91ZD.\n(3) In cases where section 91ZA or 91ZB provides that the regulator is the building control authority, it is the duty of the regulator (and not the local authority in question)—\n(a) to carry Part 1 of this Act into execution, and\n(b) to enforce building regulations.",
  "extent": "E+W",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "S. 91(1)(za) inserted (6.4.2023 for specified purposes except in relation to W., 1.10.2023 in so far as not already in force except in relation to W., 1.7.2026 for W.) by Building Safety Act 2022 (c. 30), ss. 32(2)(a), 170(4)(b)(c); S.I. 2023/362, reg. 3(1)(m); S.I. 2023/993, reg. 2(f) (with reg. 4); S.I. 2025/1368, reg. 2(a)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Words in s. 91(2) substituted (6.4.2023 for specified purposes except in relation to W., 1.10.2023 in so far as not already in force except in relation to W., 1.7.2026 for W.) by Building Safety Act 2022 (c. 30), ss. 32(2)(b), 170(4)(b)(c); S.I. 2023/362, reg. 3(1)(m); S.I. 2023/993, reg. 2(f) (with reg. 4); S.I. 2025/1368, reg. 2(a)"
    },
    {
      "type": "F",
      "label": "F3",
      "text": "S. 91(3) inserted (6.4.2023 for specified purposes except in relation to W., 1.10.2023 in so far as not already in force except in relation to W., 1.7.2026 for W.) by Building Safety Act 2022 (c. 30), ss. 32(2)(c), 170(4)(b)(c); S.I. 2023/362, reg. 3(1)(m); S.I. 2023/993, reg. 2(f) (with reg. 4); S.I. 2025/1368, reg. 2(a)"
    },
    {
      "type": "F",
      "label": "F4",
      "text": "Words in s. 91 heading inserted (6.4.2023 for specified purposes except in relation to W., 1.10.2023 in so far as not already in force except in relation to W., 1.7.2026 for W.) by Building Safety Act 2022 (c. 30), ss. 32(2)(d), 170(4)(b)(c); S.I. 2023/362, reg. 3(1)(m); S.I. 2023/993, reg. 2(f) (with reg. 4); S.I. 2025/1368, reg. 2(a)"
    },
    {
      "type": "M",
      "label": "M1",
      "text": "1936 c. 49."
    },
    {
      "type": "M",
      "label": "M2",
      "text": "1980 c. 65."
    },
    {
      "type": "M",
      "label": "M3",
      "text": "1984 c. 22."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ukpga/1984/55/section/91",
    "retrieved_at": "2026-10-29T10:01:04.213182+00:00",
    "licence": "OGL-UK-3.0",
    "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
    "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
  }
}