How to Find an EPC on the Register

The search itself is free and takes a minute. For a property in England, Wales or Northern Ireland, the certificate sits on the government's EPC Register, searched by postcode or by the report reference number³. For a property in Scotland, the search is on the Scottish EPC Register⁴. A certificate is valid for ten years, or until another one is commissioned for the same building, whichever comes sooner⁵.

What the search returns is a rating from band A, very efficient, to band G, inefficient, together with the estimated carbon emissions, the estimated energy cost and a report of cost effective measures that would raise the rating⁶. The rating is a modelled, standardised estimate rather than a measurement of the building, and government research published in May 2026 examined weaknesses in the assumptions and processes behind it⁷.

What an EPC is and when one is needed

An EPC explains how energy efficient a building is and how it could be improved¹³. It gives information about the energy efficiency of a property, its heating source, its estimated carbon emissions and its estimated energy cost¹⁴. Provision is a statutory requirement whenever a property is bought, sold or rented, a duty introduced in 2007¹.

The trigger points are specific. Certificates are needed whenever a property is built, or marketed for sale or rent². They are required when a dwelling is constructed, converted, sold or let, and not at any other time¹⁵. An EPC is required when selling or letting an existing building¹⁶. In Scotland, when a building is advertised for sale the EPC rating must be included in the property advertisement¹⁷.

That last point matters more than it looks. The rating is not a private document between seller and buyer: it is a public-facing piece of information about the property, and it follows the building rather than the occupant. A household that improves its home and commissions a new assessment changes what any future buyer, tenant or grant administrator sees.

For a household's energy independence, the EPC is the entry ticket rather than the destination. It is the document that grant schemes, lenders and landlords check before anything is funded or let, and it is the baseline against which any improvement is measured. It does not itself reduce a bill or generate a unit of heat.

Where to look: the register for your nation

There is no single UK register. The certificate is lodged on a national register and accessed through the EPC search facility on the EPC Register², but which register depends on where the property is.

Any single valid EPC is available through a public search using the postcode or the report reference number, while EPCs for a building with a Green Deal plan can only be retrieved using the reference number⁹. Current and expired certificates can both be found on the register for England, Wales and Northern Ireland⁷.

The register also serves a second purpose. Qualified assessors can be found on the EPC register¹⁶, and the Department for Communities and Local Government EPC register lists the certification body a domestic energy assessor belongs to, shown as scheme details below the assessor's contact details¹⁸. That is the route to checking whether the person who produced a certificate is accredited and which scheme oversees them.

What the certificate shows: bands, ratings and the improvement report

The rating runs from band A, the most efficient, to band G, the least efficient¹⁹. The certificate rates how energy efficient a building is on that scale⁸. Alongside the band sits an estimated, standardised rating based on a model of the building rather than a measurement taken in it²⁰.

With each EPC comes a report setting out the cost effective measures that a homeowner or business can take to improve the energy efficiency and the energy rating, such as low energy bulbs or upgrading insulation². That report is the practical half of the document: it names measures and gives an indication of what each would do to the band.

The scale of what improvement can achieve is visible in grant delivery. Under Home Upgrade Grant Phase 2, the average EPC improved by one band, with 60% of homes upgraded to band C or higher²¹. That is a programme with funded fabric measures behind it, not a certificate alone.

The gap between bands is real in consumption terms. Homes rated F or G used 68% more energy overall and 88% more gas than homes rated A or B, and homes rated D spent 27% more on their energy bill overall and 53% more on their gas bill than homes rated A or B²². Those figures describe existing stock rather than the effect of any single measure, but they show why the band is treated as a proxy for running cost.

Validity: ten years, and when an expired EPC still matters

An EPC is valid for a maximum of ten years, or until another EPC is commissioned for the same building, whichever is sooner⁵. Ratings are valid for ten years²³. The ten-year period is the figure used across official statistics, official guidance and independent guidance alike¹⁵.

Reform has not changed it. The 2026 consultation response on reforming the energy performance of buildings regime confirmed that the intention is to maintain the current ten-year validity period for reformed EPCs, while existing EPCs retain their ten-year validity until they expire²⁵. A Scottish Government consultation response had raised the possibility of reducing the validity period from ten years to five²⁶, but the confirmed position keeps ten.

An expired certificate still has uses. It remains on the register and can be found, and it records the property's condition at the date of assessment, which is useful when planning work or checking what a previous owner did. What it cannot do is satisfy a requirement for a current certificate: a sale, a new tenancy or a grant application will call for an assessment that is no more than ten years old²⁷.

There is one place where expiry has a sharper consequence. Where a landlord has registered a high cost exemption, the exemption itself expires after its period, and the landlord must then try again to improve the property's EPC rating to meet the minimum level of energy efficiency; if that still cannot be achieved, a further exemption may be registered²⁸. Expiry is therefore not a permanent escape from the standard.

What an EPC costs and who can carry out the assessment

There is no set fee for an EPC assessment. Guidance for the Boiler Upgrade Scheme removed an earlier recommendation that an assessment might cost £60 upwards and replaced it with the statement that there is no set fee³⁰. Published figures vary by source and by property: independent guidance puts the cost at £60 to £120 to get a property on the register⁹, while Welsh Government consumer guidance gives a usual range of £50 to £150¹⁰. A Scottish Government consultation on the Heat in Buildings Bill noted that in the domestic sector an assessment can be over £100³¹. Prices are quoted by the assessor, and the range reflects the size and complexity of the property as much as anything else.

An EPC can only be produced by an accredited energy assessor who visits the property to carry out an assessment². The assessment provides an assessment of the home's energy efficiency³². Qualified assessors can be found on the EPC register¹⁶, and the register also identifies the certification body that oversees a domestic assessor¹⁸.

For a household, the practical points are these. The assessment is a visit, not a desk exercise, so access to the whole property is needed. The certificate is lodged on the register by the assessor, so the household does not hold the only copy. And because the register is public, the rating is visible to anyone who searches the address.

How the rating is worked out, and where it falls short

The rating is modelled. It is an estimated, standardised rating of a building's energy efficiency based on a model²⁰, which means it reflects the assumptions built into the method as much as the physical building. Government research published in May 2026 set out to identify weaknesses in current EPC assumptions and processes, including defaults and assessor practices, and to develop insights to improve modelling algorithms and enable dynamic updates to EPCs when building changes occur⁷. That work is a recognition that the current certificate can misdescribe a property, particularly where a default value has been used in place of a measured one.

One consequence of the method is well known to householders. A property using mains gas will score higher on the energy efficiency rating than a property which uses electricity, because mains gas is cheaper per kilowatt hour than electricity³. The rating is therefore partly a running cost measure under a standard tariff assumption, not a measure of carbon alone or of how a home feels to live in. A well insulated electrically heated home can sit in a lower band than a poorly insulated gas heated one for that reason.

The band also drives obligations. In England and Wales, a property let with a rating of F or G must be improved to a minimum rating of E, or an exemption registered where applicable¹¹. The UK Government has proposed raising the minimum EPC standard for domestic private rented properties to band C by 2030, but that remains a proposal rather than a rule in force¹². Scotland is developing its own standards, with draft regulations for the private rented sector and a separate timetable³³.

For energy independence, the EPC is a benchmark rather than a lever. It tells a household where the building sits on a standardised scale and what measures would move it, and it determines access to some funded work and to the lettings market. It does not measure self-consumption, on-site generation or how much of a household's heat and power comes from its own roof or its own land, and a home with solar panels and a heat pump can still be scored on the cost assumptions of the model rather than on the energy it actually buys.