How much does a retrofit assessment cost?
A retrofit assessment typically costs £190 to £500 per home. The typical price is about £300.
£190 to £500
Per home · typically about £300
Prices are typical UK ranges drawn from firms’ published prices and cost guides, last checked 6 October 2026. They are a guide only: every firm sets its own prices, so get quotes for your own project. Some firms quote before VAT and some include it, so ask which a quote is.
Example prices
| Job | Typical price |
|---|---|
| Basic retrofit assessment from a local registered assessor (three-part report) | £189 to £300 |
| Typical single dwelling, September 2026 guidance | £250 to £500 |
| Whole-house retrofit plan with heat-loss calcs and drawings | £500 to £1,000 |
| Council voucher scheme (Suffolk), home under 98 sqm | £0 to the resident (assessment valued at over £250) |
What changes the price
- Property size and number of storeys
- Traditional/solid-wall or listed construction (more survey time)
- Region and assessor travel
- Depth of report (assessment only vs whole-house plan with heat-loss calcs and drawings)
- Whether bundled with an EPC or a condition survey
- Whether the work sits inside a funded scheme that subsidises the assessment
Assessment, design and coordination are separate
The range above is for the retrofit assessment itself. If your project needs a retrofit designer and coordinator under PAS 2035, those are usually priced as a fee on the project, and are not included here. A whole-house plan with heat-loss calculations and drawings is typically £500 to £1,000.
How to get a fair quote
- Check whether you are buying a basic assessment or a full whole-house plan with drawings. They are priced very differently.
- If you are applying for funding, ask the funder whether it supplies a free assessment before you pay for one.
- Get at least three quotes for the same job, and compare what each includes as well as the total.
- Check the provider’s accreditation. See how we check listings.
Common questions
How much does a retrofit assessment cost?
A retrofit assessment typically costs £190 to £500 per home. The typical price is about £300. Some firms quote before VAT and some include it, so ask which a quote is.
Why do quotes vary so much?
The main things are: property size and number of storeys; traditional/solid-wall or listed construction (more survey time); region and assessor travel; depth of report (assessment only vs whole-house plan with heat-loss calcs and drawings).
Does the price include VAT?
Some firms quote before VAT and some include it, so ask which a quote is. Always check before you accept.
How do I get a fair price for retrofit assessment?
Get at least three quotes for the same job, and compare what each includes as well as the total. Check the provider’s accreditation and ask for a fixed price where you can.
Where these prices come from
Researched in October 2026 from the sources below, which we compared against each other. Where sources disagreed we used the range that covered most quotes. These sites are independent of us.
- Which? - How to get the best energy retrofit advice for your home
- August - Retrofit assessment (PAS 2035) dictionary
- Suffolk County Council - home energy efficiency assessment voucher scheme
- Grand Designs Magazine - What is a retrofit assessor (Nov 2023, older)
Read next: what retrofit assessment is and when you need it.