{
  "url": "https://openlegislation.uk/town-and-country-planning-general-permitted-development-scotland-order-1992/schedule-1/class/1d",
  "json_url": "https://openlegislation.uk/town-and-country-planning-general-permitted-development-scotland-order-1992/schedule-1/class/1d.json",
  "legislation": "uksi/1992/223",
  "legislation_title": "The Town and Country Planning (General Permitted Development) (Scotland) Order 1992",
  "legislation_url": "https://openlegislation.uk/town-and-country-planning-general-permitted-development-scotland-order-1992",
  "path": "schedule/1/class/1d",
  "kind": "paragraph",
  "number": "1D",
  "heading": "Enlargement of a dwellinghouse",
  "text": "(1) Any enlargement of a dwellinghouse by way of an addition or alteration to its roof.\n(2) Development is not permitted by this class if—\n(za) the dwellinghouse is a dwelling by virtue of a change of use permitted under class 18B or 22A,\n(a) it would be on a roof plane forming part of the principal elevation or side elevation where that elevation fronts a road;\n(b) it would be on a roof plane and would be within 10 metres of the boundary of the curtilage of the dwellinghouse which that roof plane fronts;\n(c) as a result of the development the height of the dwellinghouse would exceed the height of the existing dwellinghouse, when measured at the highest part of the roof and excluding any chimney;\n(d) its width would exceed half the total width of the roof plane, measured at the eaves line, of the dwellinghouse;\n(e) any part of the development would be within 0.3 metres of any edge of the roof plane of the dwellinghouse; or\n(f) it would be within a conservation area.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Sch. 1 Pts. 1, 1ZA substituted for Sch. 1 Pt. 1 (6.2.2012) by The Town and Country Planning (General Permitted Development) (Scotland) Amendment Order 2011 (S.S.I. 2011/357), arts. 1(3), 2(4), sch. (with art. 3)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Sch. 1 Pt. 1 Class 1D(2)(za) inserted (1.4.2021) by The Town and Country Planning (General Permitted Development and Use Classes) (Scotland) Amendment Order 2020 (S.S.I. 2020/437), arts. 1, 6(d) (with art. 2)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1992/223/schedule/1/class/1d",
    "retrieved_at": "2026-10-29T14:29:53.174501+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."
}