Commercial EPCs for landlords

If you let commercial property, the EPC is not paperwork. It is the document that determines whether the building can lawfully produce income, and the regulation sitting behind it has already moved once in a way that caught a large number of landlords out.

This page is written for the letting landlord rather than the assessor: what you must hold, when the obligation bites, what it costs to get wrong, and how to sequence improvement work so that you are not paying twice.

Your obligation in one paragraph

You need a valid non-domestic EPC to grant a new lease, and you need the building to be rated at least EPC E to let it at all. Since 1 April 2023 it has been unlawful to CONTINUE letting a non-domestic property below E, not merely to grant a new lease. The certificate is valid for 10 years from lodgement.

The continuing-let rule is the one that catches landlords

The standard applied to new lettings and renewals from 1 April 2018, and a lot of landlords reasonably concluded that if they were not transacting, nothing changed for them. That stopped being true on 1 April 2023.

The practical effect is that a landlord holding an F-rated unit with a sitting tenant is in breach now. There is no grace period tied to the next lease event, and because the breach is continuing rather than one-off, the penalty exposure grows with time rather than being fixed at the moment of letting.

If you hold a portfolio and have not checked the ratings across it recently, that is the first thing to do - not because an inspection is imminent, but because you cannot price the problem until you know its size.

What non-compliance actually costs

Non-domestic MEES penalties are tiered on the property's rateable value and escalate with the duration of the breach, reaching up to GBP 150,000 for the longest breaches. Publication of the breach accompanies the financial penalty.

Separately, failing to have or produce an EPC when required attracts a penalty of GBP 500 to GBP 5,000. And beyond the penalties there is the commercial reality: a building that cannot lawfully be let has no income, and a building with a poor rating is harder to sell and prices accordingly.

Planning for the proposed EPC B standard

The government has proposed that privately rented non-domestic buildings over 1,000 sqm reach EPC B by 2031. It is a proposal, subject to secondary legislation, not current law. Importantly, in the government response of 18 June 2026, the interim EPC C milestone for 2027 was dropped - so there is no 2027 EPC C milestone to plan around, and buildings under 1,000 sqm remain on the EPC E standard with no new deadline announced.

For a landlord this is a planning question rather than an emergency. If you hold large privately let buildings, the useful exercise is to establish the gap between their current ratings and a B, and then to align that work with lease events, void periods and plant-replacement cycles. Improvement done during a void is dramatically cheaper and less disruptive than improvement done around a sitting tenant, and plant replaced at end of life costs the incremental upgrade rather than the whole installation.

What you should not do is commit capital against the dates still circulating in out-of-date guidance. "EPC C by 2027" was dropped and "EPC B by 2030" was never the proposal.

Where the improvement actually comes from

The recommendation report issued with the certificate is building-specific and is the right starting point. Across the commercial stock, though, the measures that reliably move a non-domestic rating are the fixed services rather than the fabric: LED lighting with proper controls, heating controls and zoning, improved ventilation control, and replacing ageing or oversized plant.

That is good news for a landlord, for two reasons. Services work is usually cheaper than fabric work, and it rarely needs consent - which matters for listed and conservation-area buildings where the envelope cannot be altered at all. It is also the work most likely to reduce the running costs your tenant sees, which is a genuine letting argument rather than a compliance cost.

There is no grant for the EPC assessment itself. Support can apply to the works, including the zero rate of VAT on qualifying energy-saving materials, currently due to run to 31 March 2027 before reverting to 5%. That relief is targeted rather than a blanket commercial concession, so check it against the specific installation.

If a building genuinely cannot reach the standard

Where a non-domestic property cannot be improved to the minimum standard, a valid exemption can be registered on the PRS Exemptions Register. It is a legal shield rather than funding, the grounds are defined, and exemptions are time-limited and must be renewed.

Treat it as a considered position with evidence behind it, not as a way around the standard. Our guide to MEES exemptions sets out the grounds and the process.

A portfolio approach

If you hold more than a handful of units, handling this building by building is the expensive way to do it. Assessing a portfolio as one exercise usually reduces the per-building cost, and it produces something more valuable than a stack of certificates: a ranked view of which buildings are lettable, which are close to the line, and which need capital.

Consistent portfolios benefit most. Where units share an age, a specification and a heating approach, the same improvement package often applies across all of them, and one well-designed specification can be procured once and repeated. If you manage property on behalf of others, our page for managing agents covers the multi-client version of this.

Leases, and who carries the obligation

The obligation to hold a compliant building sits with the landlord, and it is not something a lease can quietly move. What a lease can do is govern access, consent for works, reinstatement, and how improvements interact with rent review and service charge - all of which decide whether compliance work is straightforward or contentious when the time comes.

Two clauses repay attention at drafting. Access for assessment and for works, because a tenant who is not obliged to grant it can make an improvement programme very difficult. And control over tenant alterations, because a tenant fit-out that changes the fixed services can affect the rating of the building you are responsible for.

What tenants now ask

Commercial tenants increasingly ask for the rating before they ask for the rent, and larger occupiers with their own reporting obligations ask in detail. A good certificate has become a letting argument rather than a compliance formality, because the measures that lift a rating - lighting, controls, zoning, better plant - are the same ones that lower the running costs the tenant pays.

That is worth remembering when the improvement spend looks unattractive on its own. The compliance case sets the deadline; the letting and running-cost case is usually what makes the investment worth making well rather than minimally.