Building compliance standards and accreditations

Government SAP guidance describes the methodology for assessing dwelling energy performance. National Calculation Methodology guidance explains the non-domestic calculation framework, including SBEM. Method knowledge and software experience matter, but using a recognised calculation method does not alone establish accreditation for issuing a lodged energy certificate.

For domestic EPCs, government home EPC guidance requires an accredited assessor. For non-domestic EPCs, government commercial EPC guidance likewise directs clients to an accredited assessor. Match the appointment to the building and assessment category. The government DEC guide explains the accredited energy assessor role for display energy certificates, which concern operational energy use rather than the same calculation as an EPC.

U-value, thermal bridging, condensation and water calculations need competence in the relevant construction and calculation task. Approved Document L gives fabric and energy guidance, while Approved Document G addresses water efficiency guidance. These sources should not be turned into a claim that one universal accreditation covers every supporting calculation. Ask for relevant technical experience and a stated method.

The Approved Documents describe evidence and technical approaches for their respective subjects. Building Control needs information relevant to the work under review. Clear provider details, methods, scope and results help it understand what has been assessed. Credentials support that evidence; they do not guarantee acceptance or remove the need to resolve a technical shortfall.