Commercial EPC when selling a property

The discount is bigger than the fix

A buyer pricing a compliance gap is not pricing your cheapest route to fixing it. They are pricing their risk: a cautious estimate of the works, plus a margin for what the survey might find, plus the cost of the time it takes, plus the uncertainty about where the standard goes next.

That arithmetic is reliably worse than simply doing the work, and it is why improving a rating before marketing is usually a commercial decision rather than a compliance one.

Who actually looks at it

The buyer’s solicitor, during due diligence, who will raise it as an enquiry.
The valuer, who considers lettability and the cost of achieving it.
The lender, increasingly, where energy performance affects what they will lend against.
The buyer’s own asset management team, who are modelling what they would have to spend after completion.

Four parties, all of whom are incentivised to read the certificate pessimistically. None of them are incentivised to read it generously.

What is worth doing before marketing

Check what is actually on the register against the property, because an old certificate that predates improvements is working against you in public and costs very little to correct.

Where the building is below or close to the minimum, get the cheap measures done and the building reassessed before it goes to market. Lighting is usually the fastest, and the programme is weeks rather than months.

Where the gap is large, know the number yourself before a buyer tells you theirs. Having a costed, surveyed plan to hand changes the negotiation from an open-ended risk into a known figure.

Tenanted sales are different again

An investment sale is bought on the income and the security of it. A building let on a long lease with a poor rating carries a question about what happens at expiry, and the proposed EPC B from 2031 makes that question sharper the closer the date comes.

A buyer with ten years of term left discounts differently from one with eighteen months. That is worth understanding before pricing the asset.

Questions we get asked

Do I need an EPC to sell a commercial property?

A valid certificate is required when a building is sold, subject to the usual exceptions. The more consequential point is that a poor rating affects the offer rather than triggering enforcement, because buyers price the remedial cost in.

Does a poor EPC reduce the sale price?

Usually by more than the work would have cost you. A buyer prices their risk: a cautious estimate of the works, a margin for what a survey finds, the time it takes, and uncertainty about where the standard goes next.

Should I improve the rating before marketing?

Where the building is below or near the minimum, usually yes. The cheap measures are quick, and going to market with a corrected certificate is normally cheaper than negotiating against a buyer cautious estimate.

What if the building is let?

An investment buyer is pricing the income and its security, so the question becomes what happens at lease expiry. The shorter the unexpired term, the more sharply the rating is priced.

Last updated 8 October 2026.