EPC Rating Check: How to Find and Read Your Certificate

An EPC rating check should be the first step before arranging a new Energy Performance Certificate. Many properties already have a valid certificate, and in England and Wales you can search the official register free of charge using the address or postcode.

This guide explains how to check an EPC rating, how to read the result, what to look for in the recommendations and when a new assessment may still be appropriate.

How to check an EPC rating online

For a property in England or Wales, use the government’s Find an energy certificate service. Search using the property address or postcode, then select the correct address from the results.

The current certificate will show the energy rating, certificate date, expiry date and the detailed assessment information. If more than one EPC has been produced, the newer certificate normally supersedes the older one.

What should you check on the certificate?

Start with the basics: make sure the address is correct and look at the date. A domestic EPC is generally valid for 10 years in England and Wales, so an older certificate may still be usable if it has not expired and no newer one exists.

Then read beyond the headline letter. Useful sections include the current and potential ratings, the property description, recorded features and recommendations. The potential rating is not a guarantee; it reflects the methodology’s estimate of what could be achieved if relevant recommended measures were installed.

Why the address may not appear

If you cannot find a certificate, several explanations are possible. The property may never have needed one, the previous certificate may have expired, the address may be recorded differently, or the building may fall within an exemption. Newly created flats and converted properties can also have address-format differences while records are being established.

Try alternative formatting for the address and check the postcode carefully. If there is still no certificate and the property is being marketed for sale or rent, you may need to arrange a new assessment.

Can you check someone else’s EPC?

The official register is designed to allow certificates to be searched and downloaded. This is useful for buyers, tenants, landlords, sellers and property professionals who need to confirm whether a valid EPC exists.

Do not assume the certificate answers every question about the building. It is one property document, not a structural survey, electrical inspection, gas-safety record or retrofit plan.

How to read the A–G rating

The EPC rating runs from A to G. A higher band indicates stronger assessed energy efficiency under the standardised methodology. The certificate also includes a numerical score behind the band.

When comparing properties, use the rating as a consistent energy-performance indicator, but also read the recommendation section. Two homes in the same band can have very different heating systems, insulation levels and improvement priorities.

What does the 'potential' EPC rating mean?

The potential rating is an estimate based on implementing relevant recommendations in the certificate. It can be useful for understanding the direction of travel, but it should not be treated as a promise that a particular project will deliver an exact score.

Costs, building condition, planning constraints, moisture behaviour and practical installation issues are not fully captured by a headline potential rating. For significant work, investigate the building properly before deciding what to install.

When should you get a new EPC?

You may need a new assessment if there is no valid certificate and the property is being sold or rented, subject to the exemptions in the rules. You may also choose to obtain a new EPC after substantial energy-efficiency improvements if you want the certificate to reflect the updated property.

If the existing EPC is still valid, a new one is not automatically required just because the property has changed owner or tenant. Check the current legal position and the purpose for which the certificate is needed.

EPC rating checks for landlords

Landlords should check both the EPC and any rules that apply to private rented property. In England and Wales, covered domestic private rented properties are currently generally required to have an EPC rating of E or above unless a valid exemption applies. Government has also stated a longer-term aim to improve standards further, but future requirements should not be confused with the law currently in force.

If your property is F or G, read the current government MEES guidance and obtain appropriate professional advice where necessary.

What if you think the EPC data is incorrect?

Read the property-description and feature sections carefully. If you have evidence that an important feature was recorded incorrectly or omitted, contact the assessor or their accreditation scheme. Keep relevant documentation, especially for improvements that cannot be verified visually.

Check first, then book only if needed

A quick online check can prevent unnecessary duplication. If the property has a valid certificate, download it and review the expiry date and recommendations. If there is no valid certificate, you can request an EPC quote and provide the postcode, property type and reason for the assessment.

If you want to understand the letter itself, read our guide to EPC ratings and A–G bands.