The Standard Assessment Procedure (SAP) is the Government’s method for measuring the energy rating of a building.

SAP calculates a dwelling’s CO2 emissions, along with likely energy costs for space, water heating and lighting per square metre, producing a score between 1-100. The higher the number, the more energy efficient the property. Homes must achieve a ‘pass’ on these calculations for the project to pass Building Regulations. Build Aviator helps you get it right first time.