Scope and limitations
Coverage
EPC Benchmark is an independent service. It is not the official EPC register or an accredited assessor. For anything that matters about a specific property, use the official register.
Last reviewed: 23 August 2026
Where our analysis applies
EPC Benchmark currently analyses domestic EPC data for England and Wales only. We do not provide Scotland or Northern Ireland comparisons.
- England and Wales: find an energy certificate on the official GOV.UK service.
- Scotland: certificates are held on a separate register — search the Scottish EPC Register.
- Northern Ireland: outside our analysis, and it operates under its own separate arrangements.
A missing certificate does not prove anything
If a property does not appear in the data, that is not evidence that it is exempt, compliant, or that it has never had an EPC. Any of the following can explain an absence:
- a certificate exists but was never matched to the record we hold;
- a certificate has not been lodged;
- a certificate has expired, or has been replaced by a newer assessment;
- a record is not accessible through the data used for this service;
- a certificate is genuinely not required in that particular case.
We cannot resolve a missing address or a missing certificate, and we cannot tell you which of the reasons above applies. Nothing on this site should be treated as a determination about a property’s legal position.
The register records events, not every building
The official data is event-driven rather than a census of all buildings. A property appears when an assessment is lodged — commonly on sale, letting, new construction or certain grant-funded work. Buildings that have never had a certificate lodged simply are not represented, so coverage is not the whole building stock. This is explained further on the data sources page.
When a certificate may not be needed
Some buildings and some circumstances may not require an EPC, and the rules can change over time. This is not an exhaustive list and we make no determination about any individual property. Always check the current official guidance: energy performance certificates when selling a home (GOV.UK).
New builds
A newly built home may have a certificate lodged only once construction and assessment are complete, and very recent records may not be present in the analysed data at all.
Converted properties
Conversions can change property type, built form or floor area, so an older certificate may describe a layout that no longer exists and peer matching may be misleading.
Mixed-use and non-domestic buildings
Non-domestic assessments use a different method and are not part of our domestic analysis. A mixed-use building may hold non-domestic certificates, domestic ones, or both.
Unusual and exempt cases
Some buildings and circumstances are treated differently or may not require a certificate. We cannot determine whether that applies to any particular property.
Where to go for a property-specific answer
- The official register, for the certificate itself and its recorded details.
- An accredited energy assessor, for a new or updated assessment.
- An appropriate professional or legal adviser, for anything about obligations, exemptions or a transaction.