Do I need an EPC to sell a house?

In England & Wales a valid EPC must be commissioned before a property goes on the market, and the rating must be included in the advertisement. The duty sits on the seller, and separately on the estate agent, which is why agents chase it before they will list.

Commissioned is the key word. You do not need the certificate in hand on day one — you need to have ordered the assessment, and you must use all reasonable efforts to have the certificate within 28 days.

You may already have one

Certificates last ten years from the date they are lodged, they are public, and they attach to the property rather than to the owner. A home sold in 2019 has a certificate valid until 2029 and nothing further is needed.

It is worth checking rather than assuming, because paying twice for the same document is the single most common avoidable cost in this area. An assessment is £45 to £120 depending on the size of the property and where it is.

The narrow exceptions

• Some listed buildings, where compliance with minimum energy efficiency requirements would unacceptably alter their character or appearance.
• Buildings due for demolition, with the relevant permissions in place.
• Temporary buildings with a planned time of use of two years or less.
• Certain places of worship and industrial sites with low energy demand.
• Stand-alone non-dwellings under 50 m².

If you market without one

Trading standards can impose a penalty — normally £200 for a home, and more for larger commercial buildings. The bigger practical problem is delay: the buyer’s solicitor raises it in enquiries, and a mortgage valuation can be held up until the certificate appears on the register.

Since the certificate takes an hour on site and a few working days to appear, this is a self-inflicted delay rather than a real obstacle.

Does the band affect the sale?

There is no minimum band for selling. A band G property can be sold freely, which is not true of letting it.

The band does shape the conversation. Studies of sale prices in England & Wales generally find a modest premium for higher bands once location, size and type are controlled for. What has changed recently is that buy to let purchasers now price in the band C standard that applies from 1 October 2030 — a band E property carries a known future cost, capped at £10,000, and buyers negotiate with that in mind.

Worth improving before you sell?

Cheap measures usually are, particularly if the property is a point or two below a band boundary. Cylinder insulation, loft insulation to 270 mm and low energy lighting cost £145 to £500 together and are worth about 7 SAP points. If the score is 66, that is the difference between advertising a band D and advertising a band C.

Expensive measures rarely return their cost at sale. Nobody has yet found a housing market where £6,500 of new windows adds £6,500 to the asking price.

Probate, transfers and auctions

An EPC is required whenever a building is sold or let, which includes probate sales and auction sales. Transfers that are not sales — adding a spouse to the title, for instance — do not trigger the requirement, though a lender may still ask for one.

For auction, get the certificate done early: it forms part of the legal pack, and bidders will not thank you for a missing document on a property they have to commit to unconditionally.

What the buyer will actually look at

• The band, because it appears in the advertisement.
• The potential rating, which tells them whether the property can be improved cheaply.
• The recommendations, which are the first thing a surveyor cross-checks.
• The lodgement date, because a certificate from 2016 says nothing about work done since.