Standard Assessment Procedure (SAP)

Technical information

Standard Assessment Procedure (SAP) came into practise in 2005, which coincided with the Building Regulations 2006. When building a new dwelling, one of the requirements may be to have a SAP Assessment.

The SAP Assessment looks at certain elements like u-values, building fabric, boiler efficiencies, design air permeability, thermal bridging and renewables. When these criteria have been entered, this will give an energy rating, the CO₂emissions and the cost for the year. The higher the rating the lower the total cost.

By 2013 the Building Regulations will change and you will need to comply with a Code Level 4 home. This means having better u-values, efficient boilers, mechanical ventilation systems and the use of sustainable technologies.

The Code for Sustainable Homes (CSH) Assessment looks at the building fabric, ecology, natural day lighting, all of which are split into different categories. The CSH Assessment is scored on points - having an ecology report will give up to 4.8 points, having photovoltaic panels can give 1.2 points.

The initial part of the SAP Assessment is a Predicated Energy Assessment which has to be sent to Building Control with the initial ratings.

Once all details of the dwelling have been finalised and the dwelling has been completed, including the air test, this is when the Energy Performance Certificate can be issued to the home owner and building control along with any further information they require, for example the Building Regulations Compliance Report, the Data Input Sheet and specifications which have been used.

Hints & Tips

Make sure the Predicted Energy Assessment (PEA) is produced at the earliest stage, to help with the design of the dwelling.

The SAP Assessor should help achieve the best ratings possible under the specification you/Architect has produced.