Welsh Government

08/26/2025 | Press release | Distributed by Public on 08/26/2025 09:07

Building Regulations Part L: 2025 review

We want your views on our plans to improve energy efficiency standards in new and existing homes and buildings.

How to respond

Consultation ends:
17 November 2025
Consultation launched:
26 August 2025

Consultation description

We are consulting on the impacts of changes to Building Regulations Part L (conservation of fuel and power). This also includes changes to:

  • Part F (Ventilation), and
  • Part O (Overheating) of the Building Regulations, and
  • associated Approved Document guidance

Consultation documents

Consultation document , file type: PDF, file size: 1 MB

PDF
1 MB
If you need a more accessible version of this document please email [email protected]. Please tell us the format you need. If you use assistive technology please tell us what this is.

Approved Document F: consultation version , file type: PDF, file size: 2 MB

PDF
2 MB
If you need a more accessible version of this document please email [email protected]. Please tell us the format you need. If you use assistive technology please tell us what this is.

Approved Document L volume 1: consultation version , file type: PDF, file size: 2 MB

PDF
2 MB
If you need a more accessible version of this document please email [email protected]. Please tell us the format you need. If you use assistive technology please tell us what this is.

Approved Document L volume 2: consultation version , file type: PDF, file size: 2 MB

PDF
2 MB
If you need a more accessible version of this document please email [email protected]. Please tell us the format you need. If you use assistive technology please tell us what this is.

Approved Document O: consultation version , file type: PDF, file size: 613 KB

PDF
613 KB
If you need a more accessible version of this document please email [email protected]. Please tell us the format you need. If you use assistive technology please tell us what this is.

Building Regulations review: consultation stage impact assessment , file type: PDF, file size: 544 KB

PDF
544 KB
If you need a more accessible version of this document please email [email protected]. Please tell us the format you need. If you use assistive technology please tell us what this is.

Help and support

For any enquiries about the consultation please contact the Welsh Government Building Regulations team: [email protected]

How to respond

Submit your comments by 17 November 2025, in any of the following ways:

Online form

Respond online

Email

Download the response form.

Complete and return to: [email protected]

Please include 'Part L 2025 Consultation' in the subject line.

Post

Download the response form.

Complete and return to:

Building Regulations
Welsh Government
Rhyd-y-car
Merthyr Tydfil
CF48 1UZ

Related

  • Building regulation (Sub-topic)
    • Review of Part L (2025) of the Building Regulations: integrated impact assessment

First published

26 August 2025

Last updated

26 August 2025
Welsh Government published this content on August 26, 2025, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on August 26, 2025 at 15:07 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]