CalculatorAI
SAP Estimator (Energy Rating)
Estimate the Standard Assessment Procedure (SAP) energy rating for a dwelling.
Dwelling Details
m²
Estimated Energy Rating
50
Efficiency Band
Band E
Est. CO2 Emissions5.0 tonnes/yr
Disclaimer: This is a simplified estimator and does not replace an official EPC assessment. Actual SAP calculations involve rigorous data entry of precise U-values, thermal bridges, and more.
What is SAP Calculation?
The **Standard Assessment Procedure (SAP)** is the methodology used by the UK government to assess and compare the energy and environmental performance of dwellings. It results in a score from 1 to 100+ (where higher is better).
This tool provides a simplified estimate based on key factors like floor area, insulation levels, glazing type, and heating systems. It helps architects and builders gauge compliance with Building Regulations (Part L).
Frequently Asked Questions
What is a good SAP rating?
A rating of 100 represents zero energy cost. Typical new builds aim for High B (81-91) or A (92+) ratings. Existing older homes often score in the D or E range.
Does this replace an official EPC?
No. This calculator provides an *estimate* for planning purposes. An official Energy Performance Certificate (EPC) requires an assessment by an accredited energy assessor.