Minimum Energy Efficiency Standards for Commercial Property

If you own or let commercial property in England and Wales, there’s a rule you can’t ignore: you generally can’t let a building that falls below a minimum energy efficiency rating. It’s called MEES (Minimum Energy Efficiency Standards) and it’s tied to the building’s EPC. It matters to tenants too, because the works needed to comply, and who pays for them, can become a live issue during a lease.

MEES Commercial Property EPC: The Current Rule

Every commercial property that needs an EPC gets a rating from A (most efficient) down to G (least). The current MEES commercial property EPC position is straightforward: a landlord generally cannot let, or continue to let, a commercial property with an EPC rating of F or G. The minimum is E.

This started in April 2018 for new lettings and renewals, and from April 2023 it was extended to existing leases as well, so continuing to let an F or G building is caught too. If your building is F or G, you need to either improve it to at least an E or register a valid exemption before letting it.

The penalties aren’t trivial. They’re linked to the property’s rateable value and the length of the breach, and at the top end they can reach £150,000, plus the breach being published. This is enforced, not theoretical.

MEES Commercial Property EPC: What’s Coming

The bar is going up, and after years of uncertainty the direction finally became clearer in 2026. The government confirmed its intended path: from 2031, larger commercial buildings (those above 1,000 square metres) will need to reach EPC B. Smaller buildings, below that threshold, stay at the E minimum for now.

Notably, the government dropped an earlier proposal for an interim EPC C requirement by 2027. It also pushed back the EPC B target from the originally floated 2030. Secondary legislation still has to confirm the detail, so the precise rules may shift. Larger buildings will face higher standards, so an E rating may not meet future requirements.

Because this is exactly the kind of area where dates and thresholds move, it’s worth checking the current government position before relying on any specific deadline, but planning on the basis that standards are tightening is the safe assumption.

Why Tenants Should Care Too

MEES is a landlord obligation, but it doesn’t stay neatly on the landlord’s side of the table. Tenants may need to negotiate whether they contribute towards energy efficiency works through the service charge or repairing obligations. A tenant signing a long lease on a building rated D or E should think about what happens if the standard rises during the term and works become necessary. Who pays? The lease should make that clear.

The Practical Upshot

For landlords, the message is simple: know your EPC ratings, identify anything at risk, and plan improvements before a deadline forces a scramble. Check older EPCs too. Rating methods have changed, and a new assessment can sometimes improve the rating without any building works.

Tenants should avoid unexpected costs or requirements during the lease. Ask about the EPC, and make sure the lease is clear on who carries the cost if standards rise.

One point worth noting: MEES applies in England and Wales. Scotland has its own separate energy efficiency regime.

Frequently Asked Questions