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SAP Calculations & EPC Certification

Updated: Jul 5, 2019


New & Existing Buildings ✔

Residential Dwellings ✔

Design Stage ✔

Post-Completion ✔

The Standard Assessment Procedure (SAP) is a methodology used to assess and compare the energy and environmental performance of buildings, introduced by the Government to ensure all new developments meet Building Regulations as well as all current energy and environmental initiatives in place.

A SAP calculation indicates a score from 1 - 100+ for the annual energy cost. The higher the score, the lower the running costs. This is used to produce an Energy Performance Certificate (EPC), which is required for the sale or letting of any residential property. A reduced data version of SAP, RDSAP, is used for existing dwellings.

It is recommended that the SAP calculation is undertaken early in the design process as this will help to prevent any costly redesign of the dwelling.

We can provide a comprehensive SAP Assessment to assess the energy performance on new or extended dwellings in accordance with Approved Document Part L1 of the Building Regulations. Our accredited Assessors can assist house-builders with the best strategy to achieve Part L1 Compliance.

Our sustainability team works alongside our mechanical, electrical and public health engineers to ensure sustainability is integrated throughout the design process - from conception to completion. 

We can guide you through your whole project, offering solutions to help improve sustainability ratings, reduce operational costs, and meet the required limits, at no extra cost.

Call our Leeds office on 0113 257 7300 to arrange a consultation with our Sustainability Team, or email for further information.


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