Building Regulations: Energy

Summary

To ask the Secretary of State for Housing, Communities and Local Government, whether he has made an assessment of the potential merits of clarifying whether regulation 25A of the Building Regulations that relates to Approved Document L includes extensions

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Timeline

1. 19 November 2025

   Written question

   To ask the Secretary of State for Housing, Communities and Local Government, whether he has made an assessment of the potential merits of clarifying whether regulation 25A of the Building Regulations that relates to Approved Document L includes extensions

   Source: Commons

2. 28 November 2025

   Answer

   Regulation 25A of the Building Regulations 2010 concerns the use of high-efficiency alternative systems in new buildings and does not apply to extensions. The energy efficiency standards that apply to extensions to existing dwellings are set out in Approv...

   Source: Written answer

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• · Ministry of Housing, Communities and Local Government · Answering body

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