Energy Assessor (EPC)
An energy assessor conducts Energy Performance Certificate (EPC) assessments for residential and commercial properties. EPCs rate a property's energy efficiency from A (most efficient) to G (least efficient) and are a legal requirement when selling or letting.
What does an energy assessor do?
Energy assessors carry out property energy assessments, including:
- Domestic Energy Performance Certificate (EPC) assessments
- Commercial EPC (Display Energy Certificate) assessments
- On-site property surveys measuring dimensions, construction types, and heating systems
- Assessment of insulation levels, glazing, and ventilation
- Generating energy efficiency improvement recommendations
- Lodging certificates on the EPC register
- Advising on cost-effective energy improvements such as loft insulation and heat pump installations
- Supporting Minimum Energy Efficiency Standards (MEES) compliance for landlords
Is energy assessment regulated?
Yes. Domestic energy assessors must be a member of an approved accreditation scheme and hold a valid Level 3 Award in Domestic Energy Assessment. Assessors are listed on the EPC register and must follow the Government's Standard Assessment Procedure (SAP) methodology.
Approved accreditation schemes include Elmhurst Energy, Stroma, Quidos, and others. Assessors must maintain their accreditation through continuing professional development and are subject to quality audits.
It is a legal requirement to have a valid EPC when selling or letting a property. EPCs are valid for 10 years. Landlords of private rented property in England and Wales must currently achieve a minimum EPC rating of E under the Minimum Energy Efficiency Standards (MEES). Policy proposals to raise this to C have been discussed at various points; always check current government guidance for the latest requirements.
What to look for when hiring an energy assessor
When choosing an energy assessor, consider:
- Accreditation scheme membership — Verify they are registered with an approved scheme and listed on the EPC register.
- On-site survey — A proper EPC requires a physical visit. Be cautious of assessors offering desktop assessments for domestic properties.
- Improvement recommendations — A good assessor will explain the recommendations and advise on which improvements offer the best return.
- Turnaround time — Ask when the certificate will be lodged. Most assessors complete this within a few days of the visit.
- Additional services — Some assessors can also carry out retrofit assessments, thermal imaging, or air tightness testing.
Frequently Asked Questions
How much does an EPC cost?
A domestic EPC typically costs £50–£120 depending on property size and location. Commercial EPCs (DEC) cost £150–£500+. Some estate agents include EPC costs in their marketing packages. The certificate is valid for 10 years.
Do I need an EPC?
Yes, if you are selling or letting a property. The EPC must be available to prospective buyers or tenants at the point of marketing. Failure to provide an EPC can result in a fixed penalty notice. Some exemptions exist for listed buildings and certain other property types.