EPC Cost and How to Improve Your Rating Before Selling
How much an EPC costs, how the rating system works, and practical ways to improve your energy performance rating before putting your house on the market in England and Wales.
What you need to know
An Energy Performance Certificate (EPC) costs between £60 and £120 and is a legal requirement before you can market your property for sale. EPCs rate homes from A (most efficient) to G (least efficient), and simple improvements like loft insulation, LED lighting, and draught-proofing can boost your rating by one or two bands for a few hundred pounds.
- An EPC costs £60 to £120 and is valid for 10 years. Check the GOV.UK register before paying for a new one.
- You must have a valid EPC before marketing your property for sale in England and Wales.
- Most UK homes are rated D or E. Moving up even one band can make your property more attractive to buyers.
- Low-cost improvements like loft insulation top-ups, LED lighting, and draught-proofing can improve your rating without major expense.
- A higher EPC rating can add up to 5% to your sale price, according to government research.
Pine handles the legal prep so you don't have to.
Check your sale readinessIf you are preparing to sell your home, an energy performance certificate is one of the first things you will need. It is a legal requirement, and your estate agent cannot begin marketing your property without one. But beyond ticking a legal box, your EPC rating can influence how buyers perceive your home — and potentially affect the price you achieve.
This guide explains what an EPC costs, how the rating system works, and the most cost-effective ways to improve your score before you list. If you are looking at the full picture of selling costs, our conveyancing costs breakdown covers every expense you should expect.
What is an EPC and why do sellers need one?
An Energy Performance Certificate is a document that rates the energy efficiency of a property on a scale from A (most efficient) to G (least efficient). It was introduced under the Energy Performance of Buildings (England and Wales) Regulations 2012, and sellers in England and Wales have been legally required to provide one since 2008.
The EPC includes two key pieces of information: your property's current energy rating and its potential rating if recommended improvements were made. It also provides an estimate of your home's annual energy costs and a list of suggested improvements ranked by cost effectiveness.
As a seller, you must have a valid EPC before your property is marketed. This means before it appears on Rightmove, Zoopla, or in your estate agent's window. Failure to provide one can result in a penalty notice of up to £200 issued by your local trading standards authority.
How much does an EPC cost in 2026?
An EPC for a standard residential property costs between £60 and £120. The price varies based on the size and type of your property, your location, and the assessor you choose. Here is what you can typically expect:
| Property type | Typical EPC cost |
|---|---|
| 1-2 bedroom flat | £60 to £70 |
| 2-3 bedroom terraced or semi-detached | £65 to £85 |
| 3-4 bedroom detached house | £80 to £100 |
| 5+ bedroom or large detached | £90 to £120 |
Before paying for a new EPC, check whether you already have a valid one. EPCs are valid for 10 years, so if you obtained one when you bought the property or for a previous tenancy, it may still be current. Use our free EPC checker to look up your current rating and see what it means for your sale, or search the GOV.UK EPC register directly.
To find an accredited assessor, use the register linked above or search comparison sites for local quotes. You can also ask your estate agent, though booking directly is usually cheaper. The assessment itself typically takes 30 to 60 minutes and the certificate is usually issued within a few working days.
How the EPC rating system works
The EPC uses a scoring system from 1 to 100, divided into seven letter bands. A higher score means lower energy costs and lower carbon emissions. Here is the full breakdown:
| EPC band | Score range | What it means | Typical property |
|---|---|---|---|
| A | 92 to 100 | Extremely energy efficient | New-build homes with heat pumps, solar panels, and high insulation |
| B | 81 to 91 | Very energy efficient | Modern new-builds or heavily retrofitted properties |
| C | 69 to 80 | Good energy efficiency | Well-insulated homes with an efficient boiler and double glazing |
| D | 55 to 68 | Average | Many 1980s to 2000s homes with standard insulation and a gas boiler |
| E | 39 to 54 | Below average | Older properties with partial insulation and an ageing boiler |
| F | 21 to 38 | Poor energy efficiency | Pre-1930s homes with little or no insulation and single glazing |
| G | 1 to 20 | Very poor energy efficiency | Uninsulated period properties or homes with no central heating |
According to the English Housing Survey, the average EPC rating for homes in England is band D, with a score of around 66. Roughly 40% of homes are rated C or above, while around 10% fall into bands F or G.
What affects your EPC rating
Your EPC rating is determined by the physical characteristics of your property and its heating systems, not by how you actually use energy. The assessor evaluates the following factors:
- Walls: The construction type (solid, cavity, or timber frame) and whether they are insulated. Uninsulated solid walls are one of the biggest drags on an EPC rating.
- Roof and loft: Whether the loft is insulated and to what depth. The recommended minimum is 270mm of mineral wool insulation.
- Windows: Whether the property has single, double, or triple glazing. Older double glazing may score lower than modern energy-rated units.
- Heating system: The type and age of the boiler or heating system, including controls such as thermostats and thermostatic radiator valves (TRVs).
- Hot water: How hot water is generated and whether the cylinder (if present) is insulated.
- Lighting: The proportion of fixed lighting that uses low-energy bulbs (LEDs or compact fluorescents).
- Renewable energy: Any solar panels, heat pumps, or other renewable technologies fitted to the property.
The assessor does not consider how you heat or light your home in practice. A house with the heating turned off all day gets the same score as one heated round the clock, because the rating is based on the building fabric and systems, not behaviour.
Cheap ways to improve your EPC rating before selling
If your property has a low EPC rating, improving it before you list can make your home more attractive to buyers and potentially increase the sale price. The good news is that several of the most effective improvements are also the cheapest. Here are the measures roughly ordered by cost effectiveness:
1. Top up your loft insulation
If your loft insulation is below 270mm, topping it up is one of the simplest and most impactful improvements. Mineral wool rolls cost around £5 to £8 per square metre from a DIY shop, and a typical loft can be done for £150 to £300 if you do it yourself. According to the Energy Saving Trust, topping up from 120mm to 270mm could save around £35 to £65 a year on energy bills and can improve your EPC score by several points.
2. Switch to LED lighting
Replacing all fixed lighting with LED bulbs is one of the cheapest improvements you can make. LED bulbs cost as little as £1 to £3 each, and a typical house might need 15 to 20 bulbs, costing £20 to £60 in total. Since lighting accounts for a portion of the EPC assessment, switching 100% of your fixed lights to LEDs can push your score up by 2 to 5 points.
3. Add draught-proofing
Fitting draught-proofing strips around doors and windows reduces heat loss and is recognised by the EPC assessment. Self-adhesive draught strips cost around £3 to £8 per door or window, and a whole-house treatment typically costs £100 to £200. The Energy Saving Trust estimates this can save around £60 a year on energy bills.
4. Fit a smart or programmable thermostat
Upgrading your heating controls is a relatively quick win. If you do not already have a programmer and room thermostat, installing one can improve your EPC. A basic programmable thermostat costs around £50 to £100, while a smart thermostat costs £150 to £250 including installation. The EPC assessment awards higher scores for properties with a programmer, room thermostat, and thermostatic radiator valves (TRVs) — so ensure you have all three.
5. Insulate your hot water cylinder
If your property has a hot water cylinder without a jacket, or with a thin one, adding an 80mm insulation jacket costs around £15 to £25 and takes minutes to fit. The Energy Saving Trust estimates this can save around £70 a year and will be picked up as an improvement by the EPC assessor. If your cylinder is already well-insulated or you have a combi boiler (no cylinder), this does not apply.
6. Upgrade your boiler (if it is very old)
This is a more expensive option, but if your boiler is over 15 years old and rated below 86% efficiency, replacing it with a modern condensing boiler can significantly improve your EPC rating — often by a full band or more. A new combi boiler typically costs £2,000 to £3,500 installed, according to the Energy Saving Trust. This is only worth doing before a sale if the boiler is genuinely inefficient and bringing down your rating substantially.
Summary of EPC improvements by cost and impact
| Improvement | Typical cost | Potential EPC score increase | DIY or professional |
|---|---|---|---|
| LED lighting throughout | £20 to £60 | 2 to 5 points | DIY |
| Hot water cylinder jacket | £15 to £25 | 1 to 3 points | DIY |
| Draught-proofing doors and windows | £100 to £200 | 2 to 4 points | DIY |
| Loft insulation top-up (to 270mm) | £150 to £300 | 3 to 8 points | DIY or professional |
| Smart thermostat and TRVs | £150 to £300 | 3 to 6 points | Professional recommended |
| Cavity wall insulation | £400 to £800 | 5 to 15 points | Professional only |
| New condensing boiler | £2,000 to £3,500 | 10 to 40 points | Professional only |
The first four items in this table can often be completed for under £500 in total and may be enough to improve your rating by one full band — for example, from D to C. If you are considering larger improvements, weigh the cost against the potential uplift in sale price and the time available before you want to list.
Does your EPC rating affect the sale price?
There is growing evidence that a better EPC rating can add value to your property. Research commissioned by the Department of Energy and Climate Change found that properties rated A or B sold for around 5% more than comparable properties rated D, and homes rated F or G sold for around 6% less.
Buyers are increasingly aware of energy running costs, particularly since energy prices rose sharply in 2022 and 2023. A home rated C rather than E could save the buyer hundreds of pounds a year in energy bills, making it a more attractive purchase. Estate agents report that energy efficiency is now among the top five factors buyers ask about during viewings.
Beyond the sale price, a poor EPC rating can deter buyers entirely. If a buyer is looking at two similar properties and one is rated C while the other is rated E, the better-rated home will often be perceived as needing less work and costing less to run. Getting your property sale-ready as quickly as possible includes making sure your EPC presents your home in its best light.
Government grants and support for energy improvements
Before spending your own money on improvements, check whether you are eligible for government support. The main schemes available in England as of early 2026 include:
- Great British Insulation Scheme (GBIS): Previously known as ECO+, this scheme provides free or subsidised insulation measures for eligible homeowners. You may qualify based on your property's EPC rating and council tax band, or based on your household income. Details are available on the GOV.UK GBIS page.
- Energy Company Obligation (ECO4): This obligates larger energy suppliers to fund energy efficiency improvements for low-income and vulnerable households. If you receive certain benefits, you may be eligible for free cavity wall insulation, loft insulation, or boiler replacements. Contact your energy supplier or check the Ofgem ECO page for details.
- Boiler Upgrade Scheme (BUS): This provides grants of £5,000 towards an air source heat pump or £6,000 towards a ground source heat pump. It is available to homeowners in England and Wales with a valid EPC and is administered by Ofgem. While installing a heat pump is a significant project, if you are planning one anyway, the grant substantially reduces the cost.
Even if you are not eligible for these schemes, the improvements you make before selling can be highlighted in your property listing and your property disclosures, helping to demonstrate the home's value to prospective buyers.
How to get the best EPC result on assessment day
The assessor can only record what they can see and verify. If you have made improvements but the assessor cannot confirm them, they will not be reflected in your score. To make sure you get the rating your property deserves:
- Provide evidence of improvements. If you have had cavity wall insulation installed, a new boiler fitted, or windows replaced, gather the receipts, certificates, or guarantees. Without documentation, the assessor may have to assume the work was not done.
- Ensure the loft hatch is accessible. The assessor needs to check loft insulation depth. If the hatch is blocked or inaccessible, they will record the insulation as unknown, which typically defaults to a lower assumed value.
- Show your heating controls. Point out your thermostat, programmer, and TRVs. If these are hidden behind furniture or in a cupboard, the assessor may not find them.
- Confirm all lights are LED or low-energy. The assessor will check fixed light fittings, so make sure you have swapped in LED bulbs before the visit.
- Mention any renewable energy. If you have solar panels, the assessor needs to know the array size and orientation. Have the MCS certificate available if possible.
Being prepared for the assessment ensures your property is rated accurately rather than penalised for missing evidence. This is particularly important if you have carried out improvements that are not immediately visible, such as cavity wall insulation or underfloor insulation.
EPC and the wider selling process
Your EPC is just one part of preparing your home for sale. While it is a legal requirement, it sits alongside other preparations that can help your sale progress smoothly and reduce the risk of delays or fall-throughs.
Completing your legal paperwork early — including property information forms and title documents — can shave weeks off the process once a buyer is found. Our guide on how to speed up conveyancing as a seller explains how preparation before listing leads to faster completions. Similarly, understanding the full cost of selling helps you budget properly and avoid surprises. See our conveyancing costs breakdown for the complete picture.
Pine helps sellers prepare all of their legal paperwork before listing, so that when a buyer arrives, everything is ready to go. Getting your EPC sorted is one of the first steps — but it is far from the only one.
Sources and further reading
- Energy Performance Certificates when selling a home (GOV.UK)
- Find an Energy Performance Certificate (GOV.UK EPC Register)
- Energy Performance of Buildings (England and Wales) Regulations 2012 (legislation.gov.uk)
- Roof and Loft Insulation (Energy Saving Trust)
- Draught-proofing (Energy Saving Trust)
- Boilers (Energy Saving Trust)
- English Housing Survey 2022–23 (GOV.UK)
- An Investigation of the Effect of EPC Ratings on House Prices (Department of Energy and Climate Change)
- Energy Company Obligation (ECO) (Ofgem)
- Great British Insulation Scheme (GOV.UK)
- Boiler Upgrade Scheme (Ofgem)
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Frequently asked questions
How much does an EPC cost in the UK in 2026?
An EPC for a standard residential property in 2026 typically costs between £60 and £120. The exact price depends on the size of your home, your location, and the assessor you choose. A one or two-bedroom flat usually costs around £60 to £70, while a larger detached house may cost £90 to £120. You can often find competitive quotes by comparing multiple accredited assessors in your area.
How long is an EPC valid for?
An EPC is valid for 10 years from the date it was issued. If you already have a valid certificate, you do not need to pay for a new one when selling. You can check whether you have an existing EPC on the GOV.UK EPC register by entering your postcode. If your current EPC has a low rating and you have made improvements since it was issued, it may be worth commissioning a new one to reflect the higher score.
Do I legally need an EPC to sell my house?
Yes, you are legally required to have a valid EPC before you market your property for sale in England and Wales. This is a requirement under the Energy Performance of Buildings (England and Wales) Regulations 2012. You must make the EPC available to potential buyers at the earliest opportunity, and it must be included in any written particulars. Failure to provide an EPC can result in a fixed penalty notice of up to £200 from trading standards.
Can I improve my EPC rating without spending a lot of money?
Yes, several low-cost improvements can raise your EPC rating by one or two bands. Installing LED lighting throughout the property, adding draught-proofing to doors and windows, topping up loft insulation to 270mm, and fitting a smart thermostat are all relatively inexpensive. These measures combined can cost as little as £200 to £500 and may be enough to move from a D to a C rating, depending on your starting point.
What is the difference between an EPC rating and an EPC score?
The EPC score is a number from 1 to 100 that measures your property's energy efficiency, with 100 being the most efficient. The EPC rating is the letter band that corresponds to that score: A (92 to 100) is the most efficient, while G (1 to 20) is the least. Most UK homes fall in the D or E band. Your EPC certificate shows both the current rating and a potential rating that could be achieved with recommended improvements.
Does a better EPC rating increase my house value?
Research suggests that a higher EPC rating can add value to a property. A study by the Department of Energy and Climate Change found that homes with an EPC rating of A or B sold for approximately 5% more than equivalent homes rated D. However, the effect varies by property type and location. Buyers are increasingly aware of energy costs, and a better rating signals lower running costs and a more comfortable home, which can make your property more attractive in a competitive market.
What does an EPC assessor actually check?
An EPC assessor visits your property and inspects elements that affect energy performance. This includes the age, type, and construction of the building, wall and loft insulation, window glazing, the heating system and controls, hot water system, and lighting. The assessment typically takes 30 to 60 minutes for a standard house. The assessor enters the data into approved software that calculates the rating. They do not test the efficiency of your boiler or measure actual energy usage.
Should I get a new EPC if I have improved my home since the last one?
If you have made significant energy improvements since your last EPC was issued, commissioning a new assessment is usually worthwhile. Improvements like installing a new boiler, adding cavity wall insulation, or upgrading to double glazing can substantially improve your rating. A better EPC rating can make your property more attractive to buyers and potentially increase its value. The cost of a new EPC (£60 to £120) is typically far less than the potential benefit of a higher rating.
Are there any properties exempt from needing an EPC?
Yes, certain properties are exempt from the EPC requirement. These include listed buildings where compliance would unacceptably alter their character, places of worship, temporary buildings intended to be used for less than two years, standalone buildings with a total useful floor area of less than 50 square metres, and some industrial sites and workshops. If you believe your property qualifies for an exemption, check the government guidance or consult your solicitor before marketing without one.
Can my estate agent arrange an EPC for me?
Yes, most estate agents will offer to arrange an EPC on your behalf, and some include it in their marketing package at no extra cost. However, it is often cheaper to book one yourself directly with a qualified domestic energy assessor. You can find accredited assessors through the GOV.UK EPC register or comparison websites. Booking directly typically costs £60 to £80, while agents may charge £80 to £120 or mark up the fee. It is worth comparing prices before agreeing to your agent's recommendation.
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