SAP is the Government's recommended system for energy rating of dwellings. The Standard Assessment Procedure is used for calculating a property’s energy efficiency. This is given on a scale from 1 to 100, based on the annual energy costs for space and water heating and also for calculating the Carbon Index, on a scale of 0.0 to 10.0, based on the annual CO2 emissions associated with space and water heating. The higher the SAP rating the more energy efficient your home is.
Any house built after 1st April 2006 needs to meet the 2005 SAP ratings, this broken down into two parts:

• TER: Target Emission Rate
• DER: Design Emission Rate

The TER calculation is based on the property as it has been designed making 2 assumptions: 

• 1. The boiler efficiency rate
• 2. The air permeability rate

The DER calculation is the same calculation but with the true results of the Boiler and Air permeability, and the result for the DER must be equal or better then the TER result.

From 6 April 2008, all homes built and physically complete on or after this date, will also need to have an Energy Performance Certificate (EPC) provided on completion. The only person who is able to produce an Energy Performance Certificate is an accredited energy assessor.

Waveney Building Control department is an organisation where our surveying team are authorised to produce SAP calculations and Energy Performance Certificates accredited independently with Elmhurst Energy Systems.
 
As part of the services Building Control provide we are able to offer SAP calculations and EPC’s for our customers including those out side the Waveney area.

For more information and price enquiries for this service please contact the Building Control department on 01502 523044 or e-mail us at buildingcontrol@waveney.gov.uk