The Standard Assessment Procedure (SAP) is adopted by Government as the UK methodology for calculating the energy performance of dwellings within Approved Document L1A - Conservation of fuel and power in new dwellings and Approved Document L1B - Conservation of fuel and power in existing dwellings.
The calculation is based on the energy balance taking into account a range of factors that contribute to energy efficiency:
- Materials used for construction of the dwelling
- Thermal insulation of the building fabric
- Ventilation characteristics of the dwelling and ventilation equipment
- Efficiency and control of the heating system(s)
- Solar gains through openings of the dwelling
- The fuel used to provide space and water heating, ventilation and lighting
- Energy for space cooling, if applicable
- Renewable energy technologies
If you need further information please contact the Building Control team by telephone or email. Alternatively you can write to or visit a Building Control Officer at our Sleaford Offices: Building Control Services, North Kesteven District Council, Kesteven Street, Sleaford, Lincolnshire, NG34 7EF.