This consultation ended 17 November 2025.
Reviewing responses
The responses to this consultation are currently being reviewed. Details of the outcome will be published here in due course.
Original consultation
We want your views on our plans to improve energy efficiency standards in new and existing homes and buildings.
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 digital@gov.wales. 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 digital@gov.wales. 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 digital@gov.wales. 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 digital@gov.wales. 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 digital@gov.wales. 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 digital@gov.wales. 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: enquiries.brconstruction@gov.wales