Quietly, and without much fanfare, the rules around what makes a property legally lettable in England and Wales are about to change in the biggest way they have in a generation. By January 2028, the proposed Minimum Energy Efficiency Standards (MEES) will require almost every privately rented home to hold an Energy Performance Certificate (EPC) rated C or higher.
Today the minimum is E. From 2028, anything below C is non-compliant — and a non-compliant property cannot legally be let to a new or existing tenant. For a sector where roughly 60% of stock currently sits at D or below, the implications are large, immediate and expensive to ignore.
What's actually changing
The proposed change tightens the existing MEES regulations introduced in 2018. Three things matter most:
- Minimum rating moves from E to C. Around half of the current rented housing stock will need work to comply.
- Applies to new tenancies first, then all tenancies. The new standard applies to new tenancies from the deadline, and to all existing tenancies a short period after.
- Cap on landlord spend is being raised. The current £3,500 cost cap is expected to rise to around £15,000 per property — meaning the "exemption on cost grounds" escape route many landlords relied on will get much harder to use.
Who is affected
If you let a residential property in England or Wales, you almost certainly fall in scope. That includes assured shorthold tenancies, regulated tenancies and most periodic tenancies. Holiday lets and short-term lets sit outside the regime, but anything resembling a normal rental tenancy is in.
Listed buildings are not automatically exempt — they must apply for an exemption and prove that the required improvements would unacceptably alter their character. In practice this is harder to prove than landlords often assume.
The penalties: what happens if you don't comply
Local authorities (specifically Trading Standards) enforce MEES. Penalties scale with the rateable value of the property and how long the breach has run, but in broad terms:
- Letting a sub-standard property: up to £5,000 per property
- Continuing to let after notice: rising into the tens of thousands
- Publication penalty: details of the breach published on a public register
Beyond the fines, a non-compliant EPC will increasingly affect your ability to remortgage, refinance or sell. Lenders are already starting to factor EPC ratings into their criteria for buy-to-let products.
Why "I'll deal with it later" is the wrong answer
The 2028 deadline sounds far away. It is not. Two things compress the timeline:
- The trades bottleneck. If even half of the UK's D-rated rentals try to upgrade in the final 12 months, there will not be enough installers to go around. Prices rise, lead times stretch, and some landlords will simply miss the deadline.
- Tenant transitions take planning. Major work like external wall insulation or a heating system replacement is much easier between tenancies. Aligning the work with a void period can save thousands and a lot of friction.
What to do this month
The single most useful action you can take right now is to know exactly where each of your properties sits. Many landlords are surprised — properties they assumed were a comfortable C turn out to be a borderline D, and properties they wrote off as F or G are actually a single upgrade away from compliant.
Looking further ahead
2028 is the headline date but it is unlikely to be the last move. The government has been clear that the long-term trajectory is towards a net-zero rental sector by 2050, with further tightening expected in the early 2030s. Landlords who plan their upgrades around the 2028 deadline are also, intentionally or not, future-proofing for the regulatory direction of travel.
The landlords who will come out of this best are the ones who treat 2028 not as a panic deadline but as a portfolio-wide planning exercise — one property at a time, starting with the worst-rated, taking advantage of grants where they qualify, and getting ahead of the rush.