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SAP is the Government's Standard Assessment Procedure for Energy Rating of Dwellings. SAP 2005 is adopted by government as part of the UK national methodology for calculation of the energy performance of buildings. It is used to demonstrate compliance for dwellings with Part L of the Building Regulations (England and Wales) and to provide energy ratings for dwellings.

SAP 2005 has now been superseded for most purposes. The current version of SAP can be found here:

SAP Logo

SAP 2005 can be downloaded using the link below.

Enquiries to

If you were looking for the older SAP 2001 site, you will find it here

SAP 2005 specification

Download as PDF (1.6Mb uploaded 10 Feb 2006)

Approved SAP 2005 software

To download the current list of approved SAP 2005 software as a PDF file, click here

(list updated 22 November 2007)