{
  "url": "https://openlegislation.uk/town-and-country-planning-general-permitted-development-amendment-wales-order-2026/article-4",
  "json_url": "https://openlegislation.uk/town-and-country-planning-general-permitted-development-amendment-wales-order-2026/article-4.json",
  "legislation": "wsi/2026/79",
  "legislation_title": "The Town and Country Planning (General Permitted Development) (Amendment) (Wales) Order 2026",
  "legislation_url": "https://openlegislation.uk/town-and-country-planning-general-permitted-development-amendment-wales-order-2026",
  "path": "article/4",
  "kind": "article",
  "number": "4",
  "heading": "Amendment of Class G of Part 40 of Schedule 2 (air source heat pumps)",
  "text": "(1) In Part 40 (installation of domestic microgeneration equipment), Class G (installation or alteration etc. of air source heat pumps on domestic premises) is amended as follows.\n(2) In paragraph G.1 (development not permitted, compliance with MCS Planning Standards), omit “or equivalent standards”.\n(3) In paragraph G.2 (development not permitted)—\n(a) for sub-paragraph (a) substitute—\n“(a) in the case of the installation of an air source heat pump, it would result in the presence of—\n(i) more than one air source heat pump on, or within the curtilage of—\n(aa) a dwellinghouse which is not a detached dwellinghouse;\n(bb) a block of flats;\n(ii) more than two air source heat pumps on, or within the curtilage of, a detached dwellinghouse;”;\n(b) for sub-paragraph (c) substitute—\n“(c) the volume of the air source heat pump's outdoor compressor unit (including any housing) would—\n(i) in the case of the installation of an air source heat pump on, or within the curtilage of, a dwellinghouse, exceed 1.5 cubic metres;\n(ii) in the case of the installation of an air source heat pump on, or within the curtilage of, a block of flats, exceed 1 cubic metre;”;\n(c) omit sub-paragraph (d);\n(d) for sub-paragraph (g) substitute—\n“(g) the air source heat pump would be installed on a building or on land within the curtilage of the dwellinghouse or the block of flats if the dwellinghouse or the block of flats is a listed building;”;\n(e) for sub-paragraph (i) substitute—\n“(i) in the case of land within a conservation area, the air source heat pump—\n(i) would be installed on a wall or a roof which fronts a highway;\n(ii) would be installed so that it is nearer to any highway which bounds the curtilage than the part of the dwellinghouse or block of flats which is nearest to that highway;”;\n(f) after sub-paragraph (i) insert—\n“(j) in the case of land, other than land within a conservation area, the air source heat pump would be installed on a wall of a dwellinghouse or block of flats if—\n(i) that wall fronts a highway, and\n(ii) the air source heat pump would be installed on any part of that wall which is above the level of the ground floor storey.”\n(4) In paragraph G.3 (conditions), for sub-paragraph (a) substitute—\n“(a) the air source heat pump must not be solely used for the purpose of cooling;”.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/wsi/2026/79/article/4",
    "retrieved_at": "2026-10-28T22:55:10.159737+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."
}