Produce new reports through SAP

The Buildings Regulations England Part L (or ‘BREL’) reports will be produced by SAP assessments to show if homes use less energy and produce lower carbon emissions.

You must use your SAP assessment to get the following 2 BREL reports for each new home:

• the design stage BREL report - produced before any building work starts
• the as-built BREL report - must be signed by the SAP assessor and builder

You must also provide copies of each report to homeowners to show their homes meet new energy efficiency regulations.

Find out more about BREL reports in Appendix B of Approved Document L. 

Keep up to date

Use the Future Homes Hub to keep up to date with changes to the building regulations and the introduction of the Future Homes Standard.

Use our detailed guides to check what you need to do to meet new regulations.

Find out more

Find all new regulations in the official Approved Documents on GOV.UK:

• Conservation of fuel and power: Approved Document L - ‘Part L’
• Overheating: Approved Document O - ‘Part O’
• Ventilation: Approved Document F - ‘Part F’