MEES regulations & the minimum EPC for landlords

What MEES is, in one line

MEES is the regime that ties the right to let a property to its Energy Performance Certificate (EPC) rating. An EPC bands a building from A (most efficient) to G (least efficient). Under MEES it is unlawful to grant or continue a tenancy on a property that falls below the minimum band, unless a valid exemption is registered. The rules run on separate timelines for homes and for commercial premises, so it pays to know which set applies to your asset.

The residential standard: EPC E since April 2020

For domestic private rented property in England and Wales, the minimum is EPC E. The standard applied to new tenancies and renewals from April 2018, and was extended to all existing tenancies from April 2020. That means a home rated F or G cannot lawfully be let today — whether you are signing a new tenant or simply continuing an existing let — unless you have registered an exemption.

The commercial standard: F and G unlettable since April 2023

Non-domestic (commercial) property follows the same logic on its own clock. The minimum is also EPC E: it applied to new lettings from April 2018, and since April 2023 it bites on all commercial lettings, including continuing leases. In practice that makes F and G-rated commercial units unlettable unless an exemption is in place — a live issue for anyone holding older shops, offices or industrial space.

The proposed rise to EPC C

The bigger shift is still ahead. The Government has confirmed it intends to raise the minimum standard for the private rented sector from E to C. The proposed staging is:

These dates and the detail — including the cost cap and how the standard is measured — are still being finalised, so treat them as a firm direction of travel rather than settled law. The strategic point holds either way: a great many E and D-rated rentals will need real work to reach C, and the landlords who plan and fund that work early will avoid the rush. We cover the timing and what it means for portfolios on our EPC C deadline guide.

Exemptions: the PRS Exemptions Register

MEES is not absolute. Where a property genuinely cannot be brought up to standard, you may register a valid exemption on the national PRS Exemptions Register. Registration is the landlord’s responsibility, exemptions are property-specific, and most last for five years (some, such as a recent tenant’s refusal of consent, end sooner). Common grounds include:

An exemption is a backstop for genuinely stuck properties — not a planning tool. For most landlords, doing the works is both cheaper over time and the route to a more lettable, more financeable asset.

Penalties for letting below the standard

Local authorities enforce MEES and can issue civil penalties plus a publication penalty (a public record of the breach). For residential property, fines currently reach up to £5,000 per property, with the Government proposing sharply higher penalties alongside the EPC C reforms. For commercial property the exposure is far greater — penalties scale with rateable value and the length of the breach, up to £150,000. Beyond the fine, letting an unlettable property creates problems with tenancies, sale and refinancing, so the real cost is rarely just the penalty.

The Vortex angle: a compliance line is a financing event

Every property sitting below the standard — an F or G today, or a D or E once the bar moves to C — needs physical work to comply. New insulation, glazing, heating, controls and ventilation are refurbishment, and refurbishment can be funded rather than paid for out of cashflow. That turns a looming deadline into a planned, financeable upgrade.

Whether you are upgrading a single let, a buy-to-let portfolio or a parade of older commercial units, the principle is the same: bring the work forward, fund it sensibly, and protect the income. You confirm the compliance position with your advisers — we shop 100+ lenders for the finance that gets the works done.