{
  "url": "https://openlegislation.uk/town-and-country-planning-general-permitted-development-england-order-2015/schedule-2/part-15/crossheading-class-b-electricity-undertakings/paragraph-B.1",
  "json_url": "https://openlegislation.uk/town-and-country-planning-general-permitted-development-england-order-2015/schedule-2/part-15/crossheading-class-b-electricity-undertakings/paragraph-B.1.json",
  "legislation": "uksi/2015/596",
  "legislation_title": "The Town and Country Planning (General Permitted Development) (England) Order 2015",
  "legislation_url": "https://openlegislation.uk/town-and-country-planning-general-permitted-development-england-order-2015",
  "path": "schedule/2/part/15/crossheading/class-b-electricity-undertakings/paragraph/B.1",
  "kind": "paragraph",
  "number": "B.1",
  "heading": "Development not permitted",
  "text": "Development is not permitted by Class B if—\n(a) in the case of any Class B(a) development—\n(i) it would consist of or include the installation or replacement of an electric line to which section 37(1) of the Electricity Act 1989 (consent required for overhead lines) applies; ...\n(ii) it would consist of or include the installation or replacement at or above ground level or under a highway used by vehicular traffic, of a chamber for housing apparatus and the chamber would exceed 45 cubic metres in capacity; or\n(iii) it would consist of or include the installation or replacement at or above ground level or under a highway used by vehicular traffic, of a chamber for housing apparatus which would exceed 29 cubic metres in capacity where any of the following criteria are also met in respect of any part of the chamber—\n(aa) it would exceed three metres in height;\n(bb) it would be situated within five metres of a dwellinghouse;\n(cc) it would be situated on a site of special scientific interest; or\n(dd) it would be situated on a European site.\n(b) in the case of any Class B(b) development—\n(i) the development would take place in a National Park, an area of outstanding natural beauty, or a site of special scientific interest;\n(ii) the height of any support would exceed 15 metres; or\n(iii) the electronic communications line would exceed 1,000 metres in length;\n(c) in the case of any Class B(d) development—\n(i) the height of the original building would be exceeded;\n(ii) the cubic content of the original building would be exceeded by more than 25% or, in the case of any building on article 2(3) land, by more than 10%, or\n(iii) the floor space of the original building would be exceeded by more than 1,000 square metres or, in the case of any building on article 2(3) land, by more than 500 square metres;\n(d) in the case of any Class B(e) development, the building would exceed 15 metres in height, or\n(e) in the case of any Class B(f) development, it would consist of or include—\n(i) the erection of a building, or the reconstruction or alteration of a building where its design or external appearance would be materially affected, or\n(ii) the installation or erection by way of addition or replacement of any plant or machinery exceeding 15 metres in height or the height of any plant or machinery replaced, whichever is the greater.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Word in Sch. 2 Pt. 15 Class B para. B.1(a)(i) omitted (21.10.2026) by virtue of The Town and Country Planning (General Permitted Development) (England) (Amendment) (No. 2) Order 2026 (S.I. 2026/1056), arts. 1(2), 8(2)(a)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Words in Sch. 2 Pt. 15 Class B para. B.1(a)(ii) substituted (21.10.2026) by The Town and Country Planning (General Permitted Development) (England) (Amendment) (No. 2) Order 2026 (S.I. 2026/1056), arts. 1(2), 8(2)(b)"
    },
    {
      "type": "F",
      "label": "F3",
      "text": "Sch. 2 Pt. 15 Class B para. B.1(a)(iii) inserted (21.10.2026) by The Town and Country Planning (General Permitted Development) (England) (Amendment) (No. 2) Order 2026 (S.I. 2026/1056), arts. 1(2), 8(2)(c)"
    },
    {
      "type": "M",
      "label": "M1",
      "text": "1989 c. 29, was amended by Schedule 2 to the Planning Act 2008 (c. 29)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2015/596/schedule/2/part/15/crossheading/class-b-electricity-undertakings/paragraph/B.1",
    "retrieved_at": "2026-11-05T03:36:20.788841+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."
}