Cost of Energy Efficiency Audit
across the UK

# Energy Efficiency Audit Accreditation

In the UK, energy efficiency audits are primarily governed by the Energy Savings Opportunity Scheme (ESOS) and the Building Regulations framework, with key oversight from bodies such as the British Institute of Professional Photography (BIPP) in some contexts, though the most relevant accreditation typically comes from schemes like the Chartered Institution of Building Services Engineers (CIBSE) and the Association of Energy Engineers (AEE). For domestic properties, the Energy Performance Certificate (EPC) scheme is regulated by Ofgem and local authority trading standards, with certified assessors required to be registered with an approved body such as Landmark, Quidos, or Nher. For larger commercial properties and industrial sites subject to ESOS, auditors must be accredited under the scheme's specific requirements, which involve demonstrating competence in energy systems, building physics, and measurement methodology. Understanding which scheme applies to your property—whether you need an ESOS audit, an EPC, or a voluntary deep-energy assessment—is essential because each carries different regulatory weight and credibility.

Verifying a provider's credentials is straightforward and highly recommended before commissioning an audit. You should ask for their accreditation certificate and the name of the body that issued it, then check directly on that body's online register rather than relying on the provider's word alone; for ESOS audits, the Environment Agency maintains a searchable database of approved auditors, while EPC assessors can be verified through Landmark, Quidos, or other approved schemes' public registers. A legitimate auditor will be happy to provide registration numbers, insurance details, and examples of previous work, and should be able to explain their qualifications in plain language. This verification matters because accreditation ensures the auditor has been independently assessed for technical competence, follows standardized methodologies