{
  "url": "https://openlegislation.uk/building-regulations-c-amendment-regulations-2012/regulation-23",
  "json_url": "https://openlegislation.uk/building-regulations-c-amendment-regulations-2012/regulation-23.json",
  "legislation": "uksi/2012/3119",
  "legislation_title": "The Building Regulations &c. (Amendment) Regulations 2012",
  "legislation_url": "https://openlegislation.uk/building-regulations-c-amendment-regulations-2012",
  "path": "regulation/23",
  "kind": "regulation",
  "number": "23",
  "heading": "Interpretation of Part 6",
  "text": "In regulation 35(1)—\n(a) after the definition of “building” insert—\n““building envelope” in relation to a building means the walls, floor, roof, windows, doors, roof windows and roof-lights;\n“Crown authority” means the Crown Estate Commissioners, a Minister of the Crown, a government department, any other person or body whose functions are performed on behalf of the Crown (not being a person whose functions are performed on behalf of Her Majesty in her private capacity), or a person acting in right of the Duchy of Lancaster or the Duchy of Cornwall;\n“Crown interest” means an interest belonging to Her Majesty in right of the Crown, or belonging to a Government Department, or held in trust for Her Majesty for the purposes of a government department;\n“Crown building” means a building in which there is a Crown interest or a Duchy interest;\n“Duchy interest” means an interest belonging to her Majesty in right of the Duchy of Lancaster, or belonging to the Duchy of Cornwall;”;\n(b) after the definition of “energy assessor”—\n(i) omit “and”; and\n(ii) insert—\n““major renovation” means the renovation of a building where more than 25% of the surface area of the building envelope undergoes renovation; and\n“nearly zero-energy building” means a building that has a very high energy performance, as determined in accordance with a methodology approved under regulation 24, where the nearly zero or very low amount of energy required should be covered to a very significant extent by energy from renewable sources, including energy from renewable sources produced on-site or nearby.”; and\n(c) omit the definition of “recommendation report”.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "M",
      "label": "M1",
      "text": "This and the preceding three definitions are derived from section 44 of the Buildings Act 1984, which is yet to be appointed."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2012/3119/regulation/23",
    "retrieved_at": "2026-10-29T01:10:20.974071+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "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."
}