What the certificate contains
The EPC shows the current energy-efficiency rating, a potential rating and information about the property's construction and fixed services. It also lists modelled recommendations that may improve performance.
A is the most efficient band and G is the least efficient. The calculation follows an approved method so that properties can be compared on a consistent basis.
What happens during an EPC assessment
A qualified domestic energy assessor visits the home to collect the required information. The inspection is visual and non-destructive.
- Property age, type, size and construction
- Wall, roof and floor characteristics
- Windows and doors
- Heating and hot-water systems
- Fixed lighting and renewable technologies
Finding and using an EPC
Domestic EPCs are published on the official government register. Search by address to see whether a certificate already exists. A certificate is normally valid for 10 years, although a new assessment may be useful after major changes.
The EPC is commonly used during property sales and lettings and can also help owners begin investigating energy improvements.
Frequently asked questions
Is an EPC based on energy bills?
No. The assessment uses the property's characteristics and fixed services rather than the current occupants' energy use.
Where can I find my EPC?
Search the official government EPC register by address or certificate number.