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Survey finding

EPC F or G on your survey: what to do

Needs attention

Low EPC bands carry running cost and resale risk. This page covers upgrade routes.

Last updated: 6 May 2026. Editorially reviewed: 20 May 2026.

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Finding

EPC F or G rating

Needs attention

What this usually means

EPC ratings F and G are the lowest bands. Owner-occupiers can buy and live in F/G properties, but landlords are subject to MEES regulations: F/G has been unlettable since 2020 (with some exemptions). Future tightening may extend to owner-occupiers in some form.

Why it matters

Running costs, comfort, and resale ceiling. Heat pumps and insulation are the routes to upgrade.

Ask your surveyor

  • Check:What are the priority improvements?
  • Check:Is solid wall or cavity wall construction?

Ask the seller

  • Check:When was the EPC issued?
  • Check:Have any improvements been made since?

Next steps

  • Get two written quotes from local trades before negotiating with the seller.
  • Speak to your mortgage broker before exchanging if the finding affects mortgageability.
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Cross-check this finding with EPC, building age, and address-specific risk data.

What you need to know

Severity

3/ 5

Significant. Specialist follow-up usually warranted before exchange.

Typical cost to fix

Mid-tier upgrade package (insulation, draught-proofing, heating controls) £3,000-£8,000. Heat pump retrofit including disruption £8,000-£18,000. Solid-wall insulation (internal or external) £8,000-£25,000.

Mortgage impact

Some green mortgages discount higher EPC bands; F/G may be excluded from some products.

Insurance impact

Standard.

When to pull out

Not on its own.

When to renegotiate, and by how much

Discount based on upgrade costs vs market average; typical 2-5% off.

Thinking of pulling out or renegotiating? What to do after a bad survey

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How MyPropertyScan produces this guide, and what it is not

Published by MyPropertyScan and written by , who is accountable for its accuracy. No page here is written or reviewed by a chartered surveyor, conveyancer or regulated adviser, and we do not claim otherwise.

This page is not:

Figures and process steps come from the published UK datasets and standards listed on this page, not from professional practice. Pages are updated when source coverage, survey cost assumptions, or lender and legal requirements materially change. Dataset limitations are set out on the methodology page.

Spotted something out of date or wrong? Email hello@mypropertyscan.com and we will correct it and change the update date.

Sources used

We use UK public and specialist sources where they are available. Public datasets can be incomplete, delayed, or missing for some addresses. Treat them as a starting point, not as a replacement for professional advice.

Source standard: preference goes to official government datasets, statutory bodies, professional standards, and primary dataset publishers. We cite the source family on the page and explain coverage limits rather than filling gaps with unsupported estimates.

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