How much does a party wall surveyor cost?
Party wall surveyor fees are typically £700 to £3,500 in total for one neighbouring owner.
£700 to £3,500
In total for one neighbouring owner
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 |
|---|---|
| Agreed surveyor, simple loft conversion | About £900 to £1,200 |
| Agreed surveyor, rear extension | About £1,200 to £1,500 |
| Two surveyors (one per owner), loft or extension | About £1,800 to £3,000 in total |
| Two surveyors, basement or complex works | £3,600 to £5,400 or more in total |
What changes the price
- One agreed surveyor vs one per owner (roughly doubles cost)
- Type of work: loft, extension, basement, underpinning
- Number of adjoining owners (each needs a notice and award)
- Whether a schedule of condition is required
- Dispute escalation to a third surveyor
- Location (London and South East higher) and surveyor hourly rate (£90-£450)
One surveyor or two
An agreed surveyor acts for both sides, typically about £900 to £1,500 for a loft or rear extension. If each side appoints their own, you pay both, roughly £1,800 to £3,000 for a loft or extension, and £3,600 to £5,400 or more for a basement or complex job. Sources disagree on the top of these ranges, so treat them as a guide.
Neighbours on both sides
The figures above are for one neighbouring owner. If your work affects neighbours on both sides, you can need two separate awards, which roughly doubles the cost.
How to get a fair quote
- The building owner normally pays all the reasonable fees under the Party Wall etc. Act 1996, including the neighbour’s surveyor.
- If your neighbour agrees, a single agreed surveyor is cheaper than one each.
- 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 party wall surveyor cost?
Party wall surveyor fees are typically £700 to £3,500 in total for one neighbouring owner. 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: one agreed surveyor vs one per owner (roughly doubles cost); type of work: loft, extension, basement, underpinning; number of adjoining owners (each needs a notice and award); whether a schedule of condition is required.
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 party wall surveyor?
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.
- Home Owners Alliance - Party wall surveyor cost
- Best Builders - Party wall surveyor cost UK
- Trade2Base - Party wall agreement costs UK
- Ideal Home - Party wall surveyor costs
Read next: what party wall surveyor is and when you need it.