The Future of Domestic EPCs

Changes are due to Domestic EPCs in the near future.

Firstly we have an update to the Methodology used in EPCs for existing domestic properties, which is due later this year (2024).

This methodology is known as RdSAP (Reduced DataSet Standard Assessment Procedure). This update was due in Spring 2024 but has been delayed, and the timing will further depend on the outcome of the general election in July.

Although RdSAP has undergone several updates in the past, it currently stands at RdSAP 2012 version 9.94.

This contrasts with the methodology used for the assessment of new-build domestic properties. The methodolgy used for these is known as SAP (Standard Assessment Procedure) and that progressed to version 10 some time ago.

RdSAP is therefore poised to catch up to Version 10.

Secondly, currently scheduled for 2025, a complete overhaul of the methodology is planned with the releasse of the Future Homes Standard.