FAQ
Do I Need an EPC to Sell My Flat?
Yes, in nearly every case. An Energy Performance Certificate has to be ordered before the flat goes on the market, obtained within days of marketing starting and handed to the buyer, and it lasts ten years, so one may already exist for your flat. This page covers the rule and the penalty, how to check the register, what an assessor looks at in a flat and what it costs, the exemptions that do and do not apply to flats, what the rating does to the sale and the reforms due in 2027.
The Short Answer
The EPC is the one piece of sale paperwork that is required by law before marketing rather than by the buyer's solicitor afterwards, and it is also the cheapest and quickest to sort out. Most sellers only run into trouble in two ways: by letting an agent list the flat before the certificate has been ordered, which is the agent's breach as much as yours, or by assuming a listed building or a flat with communal heating is exempt. Neither is.
This page covers flats in England and Wales, with a short note on Scotland and Northern Ireland, where the rules differ. The law is the Energy Performance of Buildings (England and Wales) Regulations 2012, and gov.uk has a plain summary on its buying and selling page. This is general information, not legal advice.
The Rule and the Penalty
The regulations put two duties on a seller. The first is about timing: before the flat is put on the market, you must have commissioned an EPC, which means a proper request to an accredited assessor with the fee paid or promised. Your estate agent has a parallel duty to satisfy themselves that this has been done before they list it. You then have to use all reasonable efforts to obtain the certificate within seven days of marketing starting, and if the assessor cannot deliver in that time you get a further 21 days. The rating has to be stated in any advertisement, including portal listings and brochures.
The second duty is about the buyer. A valid EPC must be made available free of charge to anyone seriously interested, at the latest when they are sent written particulars or view the flat, and a copy must be given to the person who eventually buys. Your solicitor will put it in the contract pack with the lease and the management pack, and the buyer's solicitor will ask for it if it is missing.
The penalty for breaching either duty on a dwelling is a fixed £200, issued by the local trading standards service as a penalty charge notice, and the agent can be fined separately. Few sellers are ever fined, because the portals will not accept a listing without an EPC rating and agents order one as a matter of course. The more practical risk is delay: a buyer's solicitor will not exchange without a valid certificate, and if the one on the register has expired it has to be redone mid-sale.
Checking Whether Your Flat Already Has One
Every EPC produced in England and Wales since 2008 is lodged on a public register, and it is valid for ten years from the date it was lodged whoever commissioned it. If you bought the flat within the last ten years, the seller's EPC is still current. If the flat has been let, a valid certificate was needed each time it was let, so there may be a recent one even on a flat you have owned for decades. Search by postcode on gov.uk's find an energy certificate service and download it free; the expiry date is printed on the first page.
A valid certificate satisfies the law, but it is not always the right one to use. If the flat has been improved since it was produced, with a new boiler, double glazing or a better-insulated roof, a fresh assessment will usually move it up a band, and a better band is worth more than the fee to a buyer with a mortgage. Equally, an old certificate that rates the flat lower than it deserves, because a previous assessor could not see the insulation or assumed the worst about the walls, is worth replacing before buyers see it.
Getting One for a Flat: What the Assessor Looks At
A domestic energy assessor visits for around half an hour, and most can attend within a few days and lodge the certificate the same day. Use the gov.uk service for finding an accredited assessor, or let the agent book their usual one; either way check the assessor is accredited, because a certificate from anyone else is not valid. Expect to pay around £50 to £100 for a flat outside central London and somewhat more inside it. There is no advantage in paying more: the assessment is a standard method, and the rating does not change with the fee.
The assessor measures the flat and records the things the rating depends on: the age and construction of the walls, the glazing, the heating system and its controls, the hot water arrangement, the lighting and any insulation they can see or verify. A top-floor flat is asked about the roof; a ground-floor flat about the floor. Flats on communal heating are assessed on the communal system, which often scores well, and a flat in the middle of a block, with heated neighbours on most sides, usually rates better than the same flat on a corner. What you cannot do is change the block's fabric, so an uninsulated 1960s block will cap the rating however good your boiler is.
Help the assessor and you help the rating. Have the boiler's make and model to hand, dig out any receipts or guarantees for glazing or insulation and make the loft hatch or meter cupboard accessible. Where the assessor cannot see something, the method assumes the worst, and the difference between an assumed and a verified wall can be a whole band.
Exemptions, and the One Most Flat Sellers Get Wrong
Almost no flat is exempt. The genuine exemptions are temporary buildings, stand-alone buildings under 50 square metres, places of worship, holiday lets used for less than four months a year, buildings due to be demolished and a few industrial categories. None of those describes a flat that someone lives in.
Listed buildings are the common misunderstanding. The exemption for a listed building, or one in a conservation area, applies only so far as the work needed to meet minimum energy standards would unacceptably alter its character or appearance. It is not a blanket exemption from having a certificate, and in practice the safe course for a flat in a listed mansion block or a converted Georgian house is to get the EPC and let the assessor note the constraints. Gov.uk's own advice is to check with the council's conservation officer, and a buyer's solicitor will want to see either a certificate or a documented reason for its absence. The reforms described below would remove the heritage exemption altogether.
A sale without marketing does not escape the rule either. If you sell directly to a cash buying company, a neighbour or a relative without ever advertising the flat, the duty to commission one before marketing does not arise, but the duty to give the buyer a valid certificate still does, and their solicitor will ask for it. A probate sale is treated the same as any other, with the executor standing in the seller's shoes.
What the Rating Does to the Sale
For most owner-occupier buyers the rating is a line in the listing rather than a deciding factor, and a C or D flat sells without comment. The rating starts to matter at the edges. Several lenders now offer slightly cheaper green mortgage rates on homes rated A or B, which helps a modern block. At the other end, a flat rated F or G worries buy-to-let investors, because a privately rented home has had to reach E since 2020 unless an exemption is registered, and the government confirmed in January 2026 that this rises to C for all tenancies by 1 October 2030, subject to legislation, with a cost cap of £10,000 per property. An investor buying an F-rated flat is pricing in that work, and your offers will show it.
Where a flat sits one or two points below a band boundary, cheap improvements can lift it before the assessment: LED bulbs throughout, a jacket on a hot water cylinder, thermostatic valves and a room thermostat, draught-proofing. Larger items, such as replacement windows or a new boiler, are worth doing only if you would do them anyway, and windows in a flat usually need the freeholder's consent; our guide to alterations to a leasehold flat explains what needs a licence. Do not spend money chasing a band for its own sake: a buyer with a survey will value the flat on what it is, not on the letter.
The certificate also carries a list of recommended improvements with indicative costs and savings. Buyers read it, and so do their surveyors, so it is worth knowing what yours says before the viewings start. If it recommends cavity wall insulation on a block the freeholder will never insulate, be ready to say so.
The 2027 Reforms: What Is Changing and When
The EPC is being redesigned. The government's partial response to its consultation, published on 21 January 2026, confirmed that a domestic certificate will carry four headline measures instead of one rating: energy cost, fabric performance, heating system and smart readiness. The familiar A to G energy efficiency rating will stay on certificates until at least the end of 2029 alongside the new measures. The ten-year validity period is being kept. Two changes bear directly on selling: a valid certificate will be needed at the point the property is marketed, replacing the current 7 and 28 day grace periods, and the heritage exemption is to be removed, bringing listed flats fully into the regime.
The launch was due in October 2026 and was pushed back on 9 March 2026 to the second half of 2027, with the date still to be agreed with the industry, and a further government response on the detailed assessment method is expected before the end of 2026. Until the new regulations are made, the 2012 rules on this page apply in full. If you are selling in the next year or so, nothing here changes what you need to do.
Scotland, Wales and Northern Ireland
Wales follows the same 2012 regulations as England, with the same register, so everything above applies. Scotland requires an EPC too, but it sits inside the Home Report that a seller must commission before marketing, is lodged on a separate Scottish register and is enforced by the local authority under Scottish regulations. Northern Ireland has its own 2008 regulations and its own register, enforced by district councils, with a similar £200 penalty for homes. If your flat is outside England and Wales, check the rules for that nation rather than relying on this page.
Selling to a Cash Buying Company: We Still Need the Certificate
A sale to us is a sale without marketing, so there is no deadline tied to a listing, but our solicitor still needs a valid EPC in the contract pack before exchange, like any other buyer's. If there is one on the register we will use it. If there is not, we can arrange an assessor at the same time as our viewing so the certificate is lodged within days and the sale is not held up by it.
The rating itself does not change our offer. We buy unmodernised flats, flats with single glazing and flats in blocks with no insulation at all, and an F or G rating is a description of the work rather than a reason to walk away. The cash buyer Top 10 explains how the route works, and the unmodernised flats page covers what we buy as it stands.
Related Reading
For the full list of what it costs to sell, see the cost guide. For the other documents a buyer's solicitor asks for, see the pre-listing checklist. For works that need the freeholder's consent, see the alterations guide.
Further FAQs
If it is less than ten years old, yes. An EPC is valid for ten years from the date it was lodged on the register, whoever paid for it, so the certificate your seller provided is still current if you bought within that time. Check the expiry date on the register rather than relying on memory, because the certificate may have been produced some time before your purchase. A valid certificate is all the law requires, but if you have improved the flat since, a new assessment will usually give a better rating, and a better rating is worth more than the fee to a buyer with a mortgage.
Almost always. The listed building exemption only covers the case where the work needed to meet minimum energy standards would unacceptably alter the building's character, and it is widely misread as a blanket exemption, which it is not. For a flat in a listed block or a converted period house the sensible course is to get the certificate: the assessor records the constraints, the buyer's solicitor gets the document they expect and you avoid an argument about whether the exemption applied. The reforms due in 2027 would remove the heritage exemption altogether.
No, except that it often helps. The assessor rates the flat on the communal system that serves it, and a modern district or communal heating system can score well, particularly where it runs on low-carbon heat. You cannot change the system, and the certificate's recommendations may include things only the freeholder can do, which is worth pointing out to buyers. The duty to have a certificate is unchanged: one EPC per flat, not one per block.
Yes, provided it has been commissioned. The law requires the certificate to be ordered before the flat is put on the market, not received, and gives you seven days from the start of marketing to obtain it, with a further 21 days if the assessor is slow despite reasonable efforts. In practice most assessors lodge the certificate within a day or two of the visit and the portals want the rating at listing, so the gap is rarely more than a few days. Note that the 2027 reforms would require a valid certificate at the point of marketing, removing this grace period.
Not by itself. Most owner-occupiers treat the rating as one line in the listing, and plenty of F and G rated period flats sell every week. Where a low rating bites is with investor buyers, who have to reach E to let the flat now and C by October 2030 under the confirmed policy, and will price in the work. A cash buying company is the least affected of all, since it buys the flat as it stands. If you are selling through an agent, a few cheap improvements before the assessment, such as LED lighting and heating controls, can lift a flat sitting just below a band boundary.
The seller pays, since the duty to commission it is the seller's. A certificate for a flat typically costs £50 to £100 outside central London and somewhat more inside it, and most assessors can visit within a few days. Agents often arrange it as part of their service, sometimes at a marked-up price, so it is worth comparing with booking an accredited assessor directly through gov.uk. There is no sense in paying for a premium service: the assessment method is fixed, and the rating does not depend on the fee.
A fixed penalty of £200 for a dwelling, issued by the local trading standards service, and the estate agent can be fined separately for listing a property without a commissioned certificate. Fines are uncommon because agents and portals enforce the rule as a matter of routine. The more likely consequence of a missing or expired certificate is a delay at exchange, since the buyer's solicitor will not proceed without a valid one, and a fresh assessment mid-sale takes a few days you may not have.
Yes. The regulations apply to anyone selling a building, and an executor selling a flat from an estate is treated exactly as any other seller: the certificate has to be commissioned before marketing and given to the buyer. Check the register first, because a certificate produced when the deceased bought or last let the flat may still be valid. Where the flat is being sold directly to a cash buying company without marketing, the buyer still has to be given a valid certificate, so one is needed either way. Our probate Top 10 covers the rest of the paperwork.