{
  "url": "https://openlegislation.uk/town-and-country-planning-general-development-order-1988/schedule-2/part-1/chapter-1/paragraph-A.1",
  "json_url": "https://openlegislation.uk/town-and-country-planning-general-development-order-1988/schedule-2/part-1/chapter-1/paragraph-A.1.json",
  "legislation": "uksi/1988/1813",
  "legislation_title": "The Town and Country Planning General Development Order 1988",
  "legislation_url": "https://openlegislation.uk/town-and-country-planning-general-development-order-1988",
  "path": "schedule/2/part/1/chapter/1/paragraph/A.1",
  "kind": "paragraph",
  "number": "A.1",
  "heading": "Development not permitted",
  "text": "Development is not permitted by Class A if—\n(a) the cubic content of the resulting building would exceed the cubic content of the original dwellinghouse—\n(i) in the case of a terrace house or in the case of a dwellinghouse on article 1(5) land, by more than 50 cubic metres or 10%, whichever is the greater;\n(ii) in any other case, by more than 70 cubic metres or 15%, whichever is the greater;\n(iii) in any case, by more than 115 cubic metres;\n(b) the height of the resulting building would exceed the height of the highest part of the roof of the original dwellinghouse;\n(c) any part of the resulting building would be nearer to any highway which bounds its curtilage than—\n(i) the part of the original dwellinghouse nearest to that highway; or\n(ii) 20 metres,\nwhichever is nearest to the highway;\n(d) any part of the resulting building which is within 2 metres of the boundary of the curtilage of the dwellinghouse would exceed 4 metres in height;\n(e) the total area of ground covered by buildings within the curtilage (other than the original dwellinghouse) would exceed 50% of the total area of the curtilage (excluding the ground area of the original dwellinghouse);\n(f) it would consist of or include the installation, alteration or replacement of a satellite antenna;\n(g) it would consist of or include the erection of a building within the curtilage of a listed building; or\n(h) it would consist of or include an alteration to any part of the roof.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [
    {
      "type": "amended",
      "affecting": "uksi/1994/2595",
      "affecting_title": "The Town and Country Planning General Development (Amendment) (No. 2) Order 1994"
    },
    {
      "type": "substituted",
      "affecting": "uksi/1994/2595",
      "affecting_title": "The Town and Country Planning General Development (Amendment) (No. 2) Order 1994"
    },
    {
      "type": "revoked",
      "affecting": "uksi/1995/418",
      "affecting_title": "The Town and Country Planning (General Permitted Development) Order 1995"
    },
    {
      "type": "amended",
      "affecting": "uksi/1992/1493",
      "affecting_title": "The Town and Country Planning General Development (Amendment) (No. 4) Order 1992"
    },
    {
      "type": "amended",
      "affecting": "uksi/1992/1493",
      "affecting_title": "The Town and Country Planning General Development (Amendment) (No. 4) Order 1992"
    },
    {
      "type": "amended",
      "affecting": "uksi/1991/1536",
      "affecting_title": "The Town and Country Planning General Development (Amendment) Order 1991"
    },
    {
      "type": "modified",
      "affecting": "ukla/1992/5",
      "affecting_title": "Avon Weir Act 1992"
    },
    {
      "type": "modified",
      "affecting": "ukla/1992/5",
      "affecting_title": "Avon Weir Act 1992"
    },
    {
      "type": "modified",
      "affecting": "ukla/1992/5",
      "affecting_title": "Avon Weir Act 1992"
    },
    {
      "type": "added",
      "affecting": "uksi/1995/298",
      "affecting_title": "The Town and Country Planning General Development (Amendment) Order 1995"
    },
    {
      "type": "added",
      "affecting": "uksi/1995/298",
      "affecting_title": "The Town and Country Planning General Development (Amendment) Order 1995"
    },
    {
      "type": "substituted",
      "affecting": "uksi/1992/2450",
      "affecting_title": "The Town and Country Planning General Development (Amendment) (No. 6) Order 1992"
    },
    {
      "type": "revoked",
      "affecting": "uksi/1992/2450",
      "affecting_title": "The Town and Country Planning General Development (Amendment) (No. 6) Order 1992"
    },
    {
      "type": "substituted",
      "affecting": "uksi/1992/2450",
      "affecting_title": "The Town and Country Planning General Development (Amendment) (No. 6) Order 1992"
    },
    {
      "type": "mod",
      "affecting": "uksi/1994/678",
      "affecting_title": "The Town and Country Planning General Development (Amendment) Order 1994"
    },
    {
      "type": "amended",
      "affecting": "uksi/1989/603",
      "affecting_title": "The Town and Country Planning General Development (Amendment) Order 1989"
    },
    {
      "type": "amended",
      "affecting": "uksi/1989/1590",
      "affecting_title": "The Town and Country Planning General Development (Amendment) (No. 2) Order 1989"
    },
    {
      "type": "added",
      "affecting": "uksi/1992/1280",
      "affecting_title": "The Town and Country Planning General Development (Amendment) (No. 3) Order 1992"
    },
    {
      "type": "amended",
      "affecting": "uksi/1990/457",
      "affecting_title": "The Town and Country Planning General Development (Amendment) Order 1990"
    },
    {
      "type": "added",
      "affecting": "uksi/1992/609",
      "affecting_title": "The Town and Country Planning General Development (Amendment) Order 1992"
    },
    {
      "type": "modified",
      "affecting": "ukla/1992/18",
      "affecting_title": "Greater Manchester (Light Rapid Transit System) Act 1992"
    },
    {
      "type": "amended",
      "affecting": "uksi/1990/2032",
      "affecting_title": "The Town and Country Planning General Development (Amendment) (No. 2) Order 1990"
    },
    {
      "type": "amended",
      "affecting": "uksi/1989/1968",
      "affecting_title": "The Water (Consequential Amendments) Regulations 1989"
    }
  ],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1988/1813/schedule/2/part/1/chapter/1/paragraph/A.1",
    "retrieved_at": "2026-10-29T15:56:26.565388+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."
}