How much does an EPC cost?

An EPC typically costs between £60 and £120, depending on the size and type of property and your location. Larger properties and those in London or the South East tend to be at the higher end. The assessment itself usually takes 45 minutes to an hour. You must use a qualified Domestic Energy Assessor (DEA) registered with an approved accreditation scheme.

How long is an EPC valid for?

An EPC is valid for 10 years from the date of issue. You can reuse the same certificate for multiple sales or lettings within that period, provided the certificate has not expired. However, if you have made significant energy efficiency improvements, it is worth commissioning a new EPC to reflect the higher rating - this can make the property more attractive to buyers and tenants.

How can I improve my EPC rating?

The most effective improvements include: adding or upgrading loft insulation (can improve your rating by up to 10 points), installing cavity wall insulation, upgrading to a condensing boiler or heat pump, fitting double or triple glazing, switching to LED lighting throughout, adding draught-proofing, and installing smart heating controls. The EPC report itself includes a list of recommended improvements ranked by cost-effectiveness.

What are the penalties for not complying with MEES regulations?

Landlords who let a property with an EPC rating below E without a valid exemption face financial penalties. For properties let for less than three months, the fine is up to £2,000. For lettings of three months or more, the penalty is up to £4,000. Local authorities can also publish details of the breach. The maximum cumulative penalty per property is £5,000.

EPC Ratings Explained: Energy Performance Certificates in the UK

Q: What is the minimum EPC rating for rental properties?

Under the Minimum Energy Efficiency Standards (MEES), rental properties in England and Wales must have a minimum EPC rating of E. It is illegal to grant a new tenancy or renew an existing one for a property rated F or G unless a valid exemption has been registered. The government has proposed tightening this to a minimum of C by 2028 for new tenancies.

What is an EPC?

An Energy Performance Certificate is a document that rates the energy efficiency of a building. It was introduced in England and Wales in 2007 as part of the implementation of the EU Energy Performance of Buildings Directive (EPBD). The certificate provides an energy efficiency rating from A to G, an environmental impact (CO₂) rating, estimated energy costs per year, and a list of recommended improvements that could raise the rating.

The assessment is carried out by a qualified Domestic Energy Assessor (DEA) who visits the property and records details of its construction, heating systems, insulation, lighting and ventilation. The assessor enters this data into approved software that uses the Standard Assessment Procedure (SAP) - the government's methodology for calculating the energy performance of dwellings.

SAP produces a score from 1 to 100, with higher scores indicating better energy efficiency. The score is based on the building's fabric and fixed services (heating, hot water, lighting) rather than occupant behaviour - so how you use the property does not affect the rating. The SAP score is then mapped onto the A–G scale for the EPC certificate.

The EPC rating scale (A–G)

The EPC rating scale runs from A (most efficient) to G (least efficient). Each band corresponds to a range of SAP points:

Rating	SAP points	Description
A (92–100)	92–100	Extremely efficient - typically new-builds with heat pumps, solar panels and high insulation
B (81–91)	81–91	Very efficient - well-insulated modern homes with efficient heating
C (69–80)	69–80	Above average - proposed future minimum for rentals by 2028
D (55–68)	55–68	Average - the most common rating for existing UK homes
E (39–54)	39–54	Below average - current minimum legal standard for rentals
F (21–38)	21–38	Poor - illegal to let without a valid exemption
G (1–20)	1–20	Very poor - typically older, uninsulated properties with inefficient heating

According to government data, the average EPC rating for homes in England and Wales is D (SAP score around 60). Around 40% of homes are rated D, while roughly 15% fall into the A–C bands. New-build homes are required to achieve a minimum of B under current Building Regulations (Part L), and the Future Homes Standard (expected 2025) will push new-builds towards A ratings.

When you need an EPC

An EPC is required by law in the following situations:

Selling a property: The seller must have a valid EPC before marketing the property. Estate agents cannot legally market a property without one. The EPC rating must be included in property listings and advertisements.
Renting a property: Landlords must provide a valid EPC to tenants before the start of a new tenancy. The EPC must be provided free of charge and the rating must meet the minimum standard (currently E).
New construction: A new-build property must have an EPC produced from the as-built SAP calculation before it can be occupied.
Commercial properties: Non-domestic properties also require EPCs when sold or let, though they use a different assessment methodology (SBEM rather than SAP).

Failure to provide an EPC when required can result in a fixed penalty notice of £200 from the local trading standards authority. There are limited exemptions - listed buildings, places of worship, temporary buildings planned for less than two years, and standalone buildings under 50 square metres are not required to have an EPC.

Minimum EPC for rental properties

Since April 2018 for new tenancies and April 2020 for existing tenancies, it has been illegal for landlords in England and Wales to let a property with an EPC rating of F or G. This is enforced under the Minimum Energy Efficiency Standards (MEES) regulations, which set a floor of E for all privately rented domestic properties.

The regulation applies to all properties let on an Assured Shorthold Tenancy (AST), regulated tenancy or domestic agricultural tenancy that are legally required to have an EPC. If a property falls below E, the landlord must carry out improvements to bring it up to at least E before granting or renewing a tenancy - unless a valid exemption applies and has been registered on the PRS Exemptions Register.

The government has signalled its intention to raise the minimum to C for new tenancies by 2028, with all existing tenancies required to meet C by 2030. While the exact timeline has been subject to delays and consultations, the direction of travel is clear - landlords should plan and budget for improvements to reach C in the coming years.

EPC costs

The cost of obtaining an EPC varies depending on the size of the property and your location:

Property type	Typical cost
1–2 bed flat	£50 – £80
3 bed semi-detached house	£60 – £100
4–5 bed detached house	£80 – £120
Large or complex property	£100 – £150+

You must use a DEA who is registered with one of the government-approved accreditation schemes (such as Elmhurst Energy, Stroma or Quidos). You can find a registered assessor through the official EPC Register website. Beware of very cheap quotes - an assessor who rushes the visit may miss details that could give you a higher rating, particularly around insulation thickness or boiler efficiency.

How to improve your EPC rating

The EPC report itself includes a section listing recommended improvements, each with an estimated cost range and the potential impact on the rating. The most common and cost-effective improvements are:

Loft insulation: Adding or topping up loft insulation to 270mm is one of the cheapest and most effective improvements. Cost: £300–£600. Potential improvement: 5–10 SAP points.
Cavity wall insulation: If the property has unfilled cavity walls, insulating them can significantly improve the rating. Cost: £500–£1,500. Potential improvement: 10–15 SAP points.
Boiler upgrade: Replacing an old non-condensing boiler with a modern condensing boiler or, better still, an air-source heat pump can make a substantial difference. Cost: £2,000–£4,000 for a boiler; £7,000–£14,000 for a heat pump (before grants). Potential improvement: 10–20 SAP points.
Double or triple glazing: Replacing single-glazed windows with double glazing reduces heat loss through windows. Cost: £3,000–£8,000 depending on the number of windows. Potential improvement: 5–10 SAP points.
LED lighting: Switching all lighting to LED is cheap and easy, yet often overlooked. The SAP calculation factors in the proportion of low-energy lighting. Cost: £50–£200. Potential improvement: 2–5 SAP points.
Draught-proofing: Sealing gaps around doors, windows and floorboards. Cost: £100–£300. Potential improvement: 1–3 SAP points.
Smart heating controls: Adding a room thermostat, programmer or smart thermostat can improve the rating. Cost: £150–£400. Potential improvement: 2–4 SAP points.
Solar panels: Installing photovoltaic panels generates renewable electricity and boosts the EPC rating. Cost: £5,000–£9,000. Potential improvement: 10–15 SAP points.

For landlords needing to reach the E threshold, a combination of loft insulation, LED lighting and draught-proofing is often sufficient and can be done for under £1,000. Reaching C - the likely future minimum - typically requires more significant investment in heating systems and insulation. The Boiler Upgrade Scheme offers grants of up to £7,500 towards heat pump installation, which can make the transition more affordable.

MEES regulations

The Minimum Energy Efficiency Standards (MEES) regulations were introduced under the Energy Act 2011 and came into force in stages. They apply to all privately rented domestic and non-domestic properties in England and Wales that are required to have an EPC.

Under MEES, landlords must not grant a new tenancy or renew an existing one for a property with an EPC rating of F or G. The regulations originally applied only to new tenancies from April 2018, but were extended to all existing tenancies from April 2020 - meaning that even long-standing tenancies with sitting tenants must now meet the E minimum.

Penalties for non-compliance are enforced by local authority trading standards teams and are structured as follows:

Letting a non-compliant property for less than 3 months: Up to £2,000 fine
Letting a non-compliant property for 3 months or more: Up to £4,000 fine
Providing false or misleading information on the PRS Exemptions Register: Up to £1,000 fine
Maximum cumulative penalty per property: £5,000

The government has consulted on raising the minimum standard to C. The current proposals suggest a requirement of C for new tenancies by 2028 and for all tenancies by 2030, with a cost cap of £10,000 per property (meaning landlords would not be required to spend more than £10,000 to reach C - if reaching C costs more, the landlord can register an exemption after spending up to the cap). These proposals are subject to confirmation and may change before implementation.

EPC exemptions

Landlords who cannot cost-effectively improve their property to the minimum E rating can register an exemption on the PRS Exemptions Register. Exemptions last for five years and must be re-registered if the property is still non-compliant. The available exemptions are:

All improvements made exemption: The landlord has made all relevant improvements identified on the EPC recommendations and the property still does not reach E. This includes all improvements that can be funded by a Green Deal or other third-party finance at no upfront cost to the landlord.
High cost exemption: Under the current rules, a landlord must spend up to £3,500 (including VAT) on improvements. If no single improvement or combination of improvements costing up to £3,500 would raise the property to E, the landlord can register this exemption. Note: this cap is expected to rise significantly under the proposed C minimum regulations.
Wall insulation exemption: Where a relevant energy assessor has advised that cavity wall, external wall or internal wall insulation would damage the property or is not appropriate for the building.
Consent exemption: Where the landlord requires third-party consent (such as from a tenant, planning authority, freeholder or mortgage lender) to make improvements and that consent has been refused or given with unreasonable conditions.
Devaluation exemption: Where an independent surveyor has provided a report stating that the required improvements would reduce the market value of the property by more than 5%.

Certain property types are permanently exempt from requiring an EPC: listed buildings (where improvements would unacceptably alter their character or appearance), places of worship, temporary buildings with a planned use of less than two years, standalone buildings with a total useful floor area of less than 50 square metres, and some industrial sites and workshops where very little energy is used to condition the indoor climate.