SAP (Standard Assessment Procedure) Calculations & EPC´S

SAP (Standard Assessment Procedure) is used to provide energy ratings for new builds, extensions and converted change of use dwellings in order to comply with requirements stated in Part L of the Building Regulations (England and Wales).

SAP (Standard Assessment Procedure) is a process of assessing the energy ratings of new buildings, dwelling and extensions of new dwellings for domestic purposes. The purpose of SAP calculation is to fulfill the requirements stated in Part L of the Building Regulations (England and Wales).

The methodology is used by Department of Energy and Climate Change to check and compare the performance of energy and environment for new buildings and dwellings. The major purpose of the following the process of SAP is to provide precise and consistent assessments of dwelling energy performances that help to form the energy and environmental policies.

It shows how much percentage of energy is consumed, and how much carbon dioxide (CO2) is emitted. Southern-Assessors, as leading air testing service provider offers SAP (Standard Assessment Procedure) fast and reliable services with full advisory and consultation for a guaranteed pass.

To adhere to the set standards in Part L of the Building Regulations for new domestic buildings and dwellings, SAP calculations play to important role.

SAP calculations are performed as a part to obtain Part L compliance report and Energy Performance Certificates. The procedure is used for the new and old residential developments to assess the expected carbon emissions for the year.

We will provide all the documentation you need including a Predicted Energy Assessment (PEA), On Construction Submission and Energy Performance Certificate (EPC) for every dwelling. 

Our services

  • Providing Fully NHER accredited Energy Assessors
  • Complete service from design to completion
  • Full consultation and advisory service
  • Guaranteed pass
  • Fast and reliable service
  • Discounted Air Tests (required for the Completed SAP on New Buildings)
  • Liaise with building control


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