The rule that catches sellers out is the timing. An EPC has to be commissioned before the property is marketed, and the rating has to appear in the advert. It is not a completion-day formality.
The short version
Commission it before the listing goes live, check whether a valid one already exists on the register first, and expect buyers to use a poor rating as a negotiating point rather than a dealbreaker.
The timing
- Check the national register first — a certificate lodged in the last ten years is still valid and you may not need a new one.
- If there is none, commission one before marketing begins.
- The rating must be shown in property particulars and online listings.
- The full certificate is provided to the buyer as part of the sale pack.
What buyers actually do with it
Most buyers glance at the letter and move on. The ones who look properly are buy-to-let purchasers, who are reading it as a compliance and cost question, and energy-conscious buyers, who read the recommendations page. A poor rating rarely kills a sale on its own; it gets used in negotiation, alongside anything the survey turns up.
Is it worth improving before you sell?
Usually not for the rating alone. You are unlikely to recover the cost of significant works in the sale price, and the disruption before a move is real. The exception is the cheap stuff: if the loft is thin and the house has no thermostat, doing both is a few hundred pounds and can move the letter, which is worth it if you are marketing to landlords.
If you are selling a property you have been letting, this is also the moment to make sure the rest of the paperwork is in order. See EPCs for landlords.
Written by The Surveyor Co, a trading name of LW Renovation Group Ltd, Lincoln. This guide describes how records are written and read; it is not legal advice. Where a deposit scheme, lease or insurer sets a rule, that rule wins.