{
  "url": "https://openlegislation.uk/building-regulations-northern-ireland-2012/regulation-40",
  "json_url": "https://openlegislation.uk/building-regulations-northern-ireland-2012/regulation-40.json",
  "legislation": "nisr/2012/192",
  "legislation_title": "The Building Regulations (Northern Ireland) 2012",
  "legislation_url": "https://openlegislation.uk/building-regulations-northern-ireland-2012",
  "path": "regulation/40",
  "kind": "regulation",
  "number": "40",
  "heading": "Target carbon dioxide emission rate",
  "text": "(1) Without prejudice to the requirements of regulation 39, where a building is to be erected, or a building other than a dwelling is extended as described in regulation 38(3)(b) , minimum energy performance requirements in the form of a target carbon dioxide emission rate for that building shall be calculated and expressed using a national calculation methodology.\n(2) The building, or extension as described in regulation 38(3)(b) , shall be so designed and constructed as not to exceed its calculated target carbon dioxide emission rate , with all carbon dioxide emission rates calculated and expressed using a national calculation methodology .",
  "extent": "N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Word in reg. 40(1) substituted (25.2.2014) by The Building (Amendment) Regulations (Northern Ireland) 2014 (S.R. 2014/44), regs. 1, 6(2) (with reg. 3)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Words in reg. 40(1) inserted (28.11.2016) by The Building (Amendment) Regulations (Northern Ireland) 2016 (S.R. 2016/412), regs. 1, 6(1)(a) (with reg. 3)"
    },
    {
      "type": "F",
      "label": "F3",
      "text": "Words in reg. 40(1) inserted (28.11.2016) by The Building (Amendment) Regulations (Northern Ireland) 2016 (S.R. 2016/412), regs. 1, 6(1)(b) (with reg. 3)"
    },
    {
      "type": "F",
      "label": "F4",
      "text": "Word in reg. 40(2) substituted (25.2.2014) by The Building (Amendment) Regulations (Northern Ireland) 2014 (S.R. 2014/44), regs. 1, 6(2) (with reg. 3)"
    },
    {
      "type": "F",
      "label": "F5",
      "text": "Words in reg. 40(2) inserted (28.11.2016) by The Building (Amendment) Regulations (Northern Ireland) 2016 (S.R. 2016/412), regs. 1, 6(1)(c) (with reg. 3)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/nisr/2012/192/regulation/40",
    "retrieved_at": "2026-10-29T01:15:53.727465+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."
}