Standard Assessment Procedure (SAP 2012)
The 2012 edition of the Standard Assessment Procedure, SAP 2012, can be downloaded on this page.
SAP 2012 is used for building regulation compliance for new dwellings in England (Part L) from 6 April 2014, in Wales (Part L) from 31 July 2014 and in Scotland (Section 6) from 1 October 2015. SAP 2012 is also used to produce Energy Performance Certificates for new dwellings.
RdSAP 2012 is used to produce Energy Performance Certificates for existing dwellings and applies in all parts of the UK from 8 December 2014.
A new version of RdSAP Conventions has been uploaded (see the Downloads section). These conventions must be applied by all accredited DEAs from 01 October 2016.
SAP methodology and approved software:
SAP 2012 document (October 2013 updated June 2014 to include RdSAP 2012 and with minor corrections December 2014)
Current list of approved SAP 2012 software (list dated 22 February 2017)
Current list of approved RdSAP 2012 software (list dated 15 December 2016)
Current list of approved ECO software using RdSAP 2012 (list dated 20 August 2015)