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The Minimum Energy Efficiency Standard (MEES) sets the floor on how energy-efficient a rented home must be. Since 1 April 2020 the rule has applied to all existing tenancies in England and Wales: you cannot lawfully let a property with an EPC rating below band E unless you have registered a valid exemption. A property rated F or G is, in effect, unlettable until it is either improved to at least E or covered by a registered exemption. This checker takes your current EPC band and tells you where you stand against both the rule in force today and the standard that is coming.

The direction of travel is band C. The Government has consulted on raising the minimum energy efficiency standard so that new tenancies must reach EPC C from 2028 and all tenancies from 2030. As of 2026 this is firm policy direction rather than enacted law, and the precise dates and detail could still shift — but every serious landlord is planning around it, because the gap between a band D or E property and a band C one usually means real capital works: insulation, better heating controls, draught-proofing, sometimes glazing or a heat pump. Leaving that to 2029 is how landlords get caught.

Reading your result is straightforward. Bands A, B and C already meet both the current minimum and the proposed 2030 target, so no MEES action is needed beyond keeping the EPC valid. Bands D and E meet the current minimum — you can let today — but fall below the proposed C standard, so they are the properties to scope improvement works on now while costs and installer availability are manageable. Bands F and G are below the current minimum: they cannot be let without improvement or a registered exemption, and they face the steepest journey to C.

Exemptions are a release valve, not an escape. The PRS Exemptions Register recognises several grounds — for example, the "all relevant improvements made" exemption where you have spent up to the cost cap and still cannot reach the standard, a "high cost" exemption, a third-party consent refusal (a tenant or lender saying no), or a property-devaluation exemption supported by a surveyor’s report. Each lasts five years, must be registered before you rely on it, and most cannot simply be rolled over on the same basis. Treat an exemption as time bought to do works, not a permanent waiver.

Cost caps shape how far you have to go. The current cap to reach band E is £3,500 including VAT: if reaching E would cost more than that, you can register the "all relevant improvements" exemption having spent up to the cap. The band-C consultation floated a substantially higher cap (figures around £15,000 were discussed), reflecting the bigger works needed to lift typical stock from D/E to C. The final cap is not confirmed, so model your worst case at the higher figure and treat the £3,500 cap as applying only to the current E standard.

The practical takeaway is to act on band before the deadline forces your hand. Get a current EPC (they last 10 years, and an old one may understate efficiency after newer measures), identify the cheapest measures that move the rating, and sequence the work across your portfolio so you are not competing for installers in 2029. A property improved early also rents better and cheaper to run for the tenant — the standard is a deadline, but the upgrade is also an asset decision, not only a compliance cost.