The Minimum Energy Efficiency Standards (MEES) set a legal floor on the EPC rating you need to let a residential property. The current minimum is E. A minimum of C is proposed by 2030. This guide covers what the rules mean, what the penalties are, and what to do if your property doesn't meet them.
MEES stands for Minimum Energy Efficiency Standards. The rules apply in England and Wales and set a minimum EPC rating for privately rented residential properties. They came into force for new tenancies in April 2018 and were extended to cover all existing tenancies in April 2023. From April 2023, a landlord cannot legally let a property rated F or G without holding a valid exemption.
The 2030 deadline matters now. The Government has proposed raising the minimum to C by October 2030. While that is not yet law, the direction is clear and the timetable is tight. A property at D or E today may need improvement works to comply — and those works take time to plan, get quoted and carry out. Getting an EPC now tells you exactly where you stand.
All privately rented properties in England and Wales must have an EPC with a minimum rating of E. This applies to new tenancies and to existing ones. You cannot let a property rated F or G without a valid exemption registered on the PRS Exemptions Register.
You need a valid EPC (not expired, issued within the last 10 years) showing a rating of E or above. If your EPC shows F or G, you must either make improvements to raise the rating or register an exemption. Letting an F or G rated property without an exemption is unlawful.
Local authorities enforce MEES. Landlords found letting non-compliant properties face fines of up to £5,000 per property. The penalty can also be published on a public register. Enforcement has increased since the rules were extended to existing tenancies in 2023.
MEES applies to HMOs in the same way as single-let properties. The EPC covers the whole building, not individual rooms. If you let a House in Multiple Occupation, you need a valid domestic EPC for the property as a whole and it must meet the minimum rating.
The Government has proposed that all privately rented properties must achieve a minimum EPC rating of C by October 2030. As of April 2026, this is not yet in law. However, the consultation is clear on direction and the timeline is under four years away.
A property currently rated D needs to close the gap to C. Many improvements that achieve this — loft insulation, a new boiler, heating controls — take several months to plan, fund and install. Landlords who leave this until 2029 will face a rush of contractors, higher prices and less choice. Acting now gives you time to plan at your own pace.
The first step is knowing your current rating. If you don't have a current EPC, book a landlord EPC and we'll tell you exactly where you stand and what improvements would move you to C.
An F or G rating does not automatically mean expensive work. The EPC report lists specific improvements and their estimated cost and impact. Some changes are cheap and move the rating significantly. Others are expensive but might qualify for exemption.
Here is what to do:
If your EPC is old or you don't have one, book an assessment first. The recommendations on the certificate are specific to your property and show which improvements would make the most difference to the rating.
If the total cost of all relevant recommended improvements would exceed £3,500, you may qualify for the cost-cap exemption. This allows you to continue letting legally while the exemption is registered. You still need to carry out all improvements that fall within the £3,500 threshold.
Exemptions are registered on the PRS Exemptions Register and are valid for five years. If you choose to make improvements instead, a new EPC after the works will show the updated rating. Either way, you need to act — you cannot legally continue letting without doing one or the other.
Not every property can reach E (or eventually C) through standard improvements. The rules allow exemptions in specific circumstances. All exemptions must be registered on the PRS Exemptions Register — you cannot simply decide an exemption applies without registering it.
If all relevant improvements would cost more than £3,500 to carry out, you can register a cost-cap exemption. You must first carry out all improvements available within the £3,500 cap. The exemption lasts five years.
If improvements require consent from a freeholder, tenant or local authority and that consent has been refused, you can register an exemption. You must have genuinely sought consent and been refused in writing.
If a surveyor confirms that recommended improvements would reduce the market value of the property by more than 5%, you can register a devaluation exemption. This requires a written report from a qualified surveyor.
If you have recently acquired a property that does not meet the standard, a six-month temporary exemption applies. This gives you time to assess options before having to comply or register a longer-term exemption.
If you are a landlord in North Wales and are unsure about your MEES position, here are the steps to take:
All privately rented properties in England and Wales must have a minimum EPC rating of E to be legally let. Properties rated F or G cannot be let without a valid exemption registered on the PRS Exemptions Register. The Government has proposed raising this minimum to C by October 2030.
Someone needs to provide access to the property, but you do not need to stay for the whole visit. A letting agent, tenant or trusted keyholder can let the assessor in. We just need access to all rooms, including loft space.
The certificate shows the property's current energy efficiency rating from A (most efficient) to G (least efficient) and a potential rating showing what could be achieved with improvements. It also lists specific improvements that would make the biggest difference, with estimated costs and savings. The certificate is valid for ten years.
Landlords who let properties that do not meet the minimum standard without a valid exemption can face fines of up to £5,000 per property. Local authorities enforce the rules and can prohibit letting until improvements are made. The rules apply to each property individually.
You cannot legally let an F or G rated domestic property without registering a valid exemption on the PRS Exemptions Register. Get a current EPC first. The recommendations section shows what improvements would raise the rating and at what cost. Some properties qualify for the cost-cap exemption (currently £3,500) if the improvements required exceed that threshold.
The UK Government has proposed that all privately rented properties must achieve a minimum EPC rating of C by October 2030. As of April 2026, this is not yet law, but the direction is clear. Landlords who act now have time to plan improvements, get quotes and spread costs rather than being rushed by a deadline.
