An EPC is valid for ten years from the date it was lodged on the register. A new one is required when the home is next marketed for sale or rent — not simply because the old one expired while the owner lived there. For a buyer, the certificate's age matters as much as its band.
An Energy Performance Certificate is valid for ten years from the date it was lodged on the register. It does not expire when the property is sold, and does not restart for a new owner.
If you are buying, the useful question is not when it runs out but how old it already is. One lodged nine years ago is still valid, and it describes a version of the property — at a set of energy prices — that no longer exists.
This guide covers domestic certificates in England & Wales. Scotland and Northern Ireland keep separate registers under their own rules.
Ten years from lodgement
Lodgement is the date the assessor filed the certificate on the public register, usually days after the visit. That date starts the ten years — not the sale date, not the day you found it. Two things follow.
The certificate travels with the property, not the owner. Buy a house with six years left on its EPC and you inherit six years, not a fresh ten.
Ten years is a ceiling, not a schedule. Nothing obliges an owner to refresh one mid-life after doing work, and most do not, so a certificate can be valid and out of date at once. You can look up the certificate and read its lodgement date before you book a viewing; how to check a property's EPC covers the lookup.
Been to a viewing?
Put in the address and see what the data says you should offer — sold prices, time on market, seller signals.
When a new certificate is actually required
The trigger is marketing, not expiry. Position as of August 2026; the minimum-band rules that sit alongside it are set out at the end.
Selling. A home marketed for sale in England & Wales needs a valid EPC, and the duty sits with the seller. If theirs lapsed years ago, they have an assessment to arrange, whether they know it or not.
Letting. The same applies to a home marketed to rent.
Separately, and not tied to marketing: a privately rented home in England & Wales must meet a minimum of band E, and has had to since April 2020. That is a standing condition on the let itself — it applies to a tenancy already running, not only to a new one — and the certificate records the band. It binds letting, not owning or selling.
New build or conversion. The dwelling is assessed on completion.
What is not a trigger is a certificate running out while someone lives in the house: there is no renewal notice and no duty on an owner-occupier to hold a valid one. Nor is improvement work — a new boiler obliges nobody to reassess, which is why so many certificates understate the homes they describe.
An expired EPC is not a penalty in itself
An expired certificate reads like a black mark. For an owner-occupier it is not one.
It is not illegal for an owner-occupier to live in a home with an expired EPC, and nothing happens to them on the expiry date. Expiry is a fact about a document, not about the building. The walls did not get worse on the anniversary.
A landlord's position is different. The band E minimum has applied to privately rented homes in England & Wales since April 2020, and it binds a tenancy that is already running — so a let property can be in breach with nobody marketing anything, expired certificate or not. If you are letting, or buying to let, check your own position rather than reading a lapsed date as an all-clear.
It does become the seller's problem at the point of sale. A lapsed certificate means a fresh assessment is due, on today's property and to today's conventions — and the new band can land either side of the old.
Why the age matters as much as the band
Three things drift as a certificate ages, and each changes what the document is worth to you as evidence.
It predates every improvement since
An assessor records what they can see, or be shown evidence for, on the day. A certificate lodged nine years ago knows nothing about the boiler replaced in 2022, the loft topped up, or the glazing changed. That cuts both ways.
- An old, poor certificate may under-rate an improved home. The seller has an argument they have not made, and should be able to evidence it with invoices or a fresh assessment.
- An old, good certificate proves less than it appears to. It describes a decade-old building, and anything marked "assumed" was assumed a decade ago.
Its £ figures were modelled at its own year's energy prices
Say this plainly: on an old certificate, the money is the least reliable thing on it. The estimated running costs are model outputs at the rates in force when it was produced, so an older one quotes a tariff landscape that has moved several times since.
The band and the element conditions age slowly. The pounds age fast. Read old running-cost figures as an indication of relative efficiency and work out likely bills separately — estimating energy bills before you buy covers how. Re-pricing narrows the gap without closing it: Broc's checker takes the same modelled energy use and re-prices it at rates stated as of early 2026, and says which figure is which. That early-2026 label belongs to the re-priced figure — a certificate's own pounds always sit at the rates of the year it was lodged. Neither is a forecast of your bills.
The methodology has moved underneath it
The assessment model and its conventions have been revised more than once over the last ten years, so two certificates a decade apart are not strictly like for like: part of the difference between them is method rather than property.
That matters most when comparing homes. If one is from 2017 and the other from 2025, some of the gap between their scores is vintage — and since band D is the most common band in England & Wales, the letter never did much work anyway. Compare certificates of similar age where you can; where you cannot, read the element-by-element conditions, which describe the building in words and travel better than a score.
Still working out your number?
One practical guide a week — starting with how far below asking you can actually go.
By signing up you agree to our privacy policy. We capture which guide referred you and note when our emails are opened, so we know what's worth writing. Unsubscribe any time.
Reading an old certificate before you offer
- Find the lodgement date first, before the band. It sets how much weight everything else on it deserves.
- List what could have changed since — heating, insulation, glazing — then ask what has been done, and what can be evidenced.
- Discount the pounds, keep the structure. Element conditions and recommended measures age better than the costs attached to them.
Where the recommendations still stand — uninsulated walls, a heating system the certificate rates poorly — that gives you a case worth arguing. It does not entitle you to money off and does not set a discount. What it gives you is a documented, unaggressive way to put a number in the room: a certificate the seller commissioned, carrying the assessor's indicative cost range — at the rates of the year it was lodged — for work ahead of whoever buys the house. Whether that lands is a negotiation.
Work from the figures on the actual property rather than averages — run the free EPC checker and read the lodgement date and the indicative cost ranges the certificate gives. Those ranges are model outputs at the rates in force when it was lodged, so on an older certificate treat them as a rough order of magnitude rather than a price for the work. What is an EPC covers the document itself.
Where the rules stand (position as of August 2026)
- Privately rented homes in England & Wales must already meet band E. That minimum has been in force since April 2020, and it binds a tenancy already running, not only a new let. It applies to letting, not to owning or selling.
- The rental minimum rises to band C — or its equivalent under the new metrics — on 1 October 2030. This is confirmed, with one genuine caveat: what counts as equivalent under the new metrics is still completing its Parliamentary passage.
- Certificates themselves are changing. New-style certificates using four Home Energy Model metrics, replacing today's single score, are announced for H2 2027. Announced is weaker than confirmed; timing and detail can still move.
- There is no confirmed minimum band for selling a home. If you have read that sellers will need a C by 2035, that came from a 2021 consultation ambition which never became policy — not a rule, and not something to price a purchase around.
General information, not financial or legal advice. Broc's scores and recommended ranges are informational guidance generated from data; outcomes vary and no result is guaranteed.
Frequently asked questions
How long is an EPC valid for?
Ten years from the date it was lodged on the register. It stays valid through a sale and does not restart for a new owner, so a home can change hands with a year or two left.
Do I need a new EPC if mine has expired?
Not simply because it expired. A fresh certificate is required when the home is marketed for sale or for rent, and nothing obliges an owner to renew one in the meantime — or after improvement work.
Is it illegal to have an expired EPC?
Not for an owner-occupier: living in your own home with an expired certificate is not an offence, and nothing is triggered on the expiry date. The duty to hold a valid certificate attaches to marketing the home for sale or rent. A landlord's position is different, because the band E minimum has applied to privately rented homes in England and Wales since April 2020 and binds a tenancy already running, so check your own position if you are letting.
Can I trust an old EPC's estimated running costs?
Treat them as the weakest figures on the document. They are modelled at the energy prices in force when it was produced, so use them to compare efficiency rather than predict a bill.
Broc
Broc is the badger behind trybroc.io — "broc" is Old English for badger. Where the estate agent speaks in superlatives, Broc speaks in evidence — sold comparables, days on the market, seller-pressure signals — and turns them into a number you can defend.
