Who pays for a party wall surveyor?

Last updated: 30 July 2026

The short answer: the person doing the works pays — for their own surveyor and the neighbour's. That's section 11 of the Act, not a favour. Here's the default, the three real exceptions, and the security most people don't know they can ask for.

The default: the building owner pays

If you're the one building, the Act's starting position is that you pay for the works and for the reasonable surveyor fees on both sides. If you're the neighbour and you dissent, appointing your own surveyor normally costs you nothing — which is why "protection at no cost to you" is the honest way to describe option 2 on what your notice means.

The word doing quiet work in that sentence is "reasonable". The building owner pays reasonable fees — not any bill at any rate. Where fees are disputed, that question lands inside the award process like everything else.

Serving the notice is the cheap part — the award isn't

The single most useful thing to understand about party wall costs is that they arrive in two stages, and only the second one is expensive.

Stage one, the notice. Writing and serving it yourself is free — the government's letters are free to download and there's no fee to pay anyone. If you'd rather not, firms charge roughly £65–£150 +VAT per neighbour to draft and serve. That's the whole cost if your neighbour consents. Here's how to write your own, and the official templates it should be based on.

Stage two, the award. This only happens if the neighbour dissents, or doesn't reply. Now surveyors are appointed and real fees start — typically four figures. A consenting neighbour skips this stage entirely, which is why a calm, early, well-explained notice is worth more than any negotiating tactic later.

What if the neighbour just ignores the notice?

Silence is not a way out for either side. After 14 days with no reply, the Act treats the neighbour as having dissented — a dispute is deemed to have arisen, and the surveyor process starts anyway. If they then won't appoint a surveyor, you can serve a written request and, after 10 days, appoint one on their behalf.

And the bill for that surveyor still generally falls to the building owner. Ignoring a notice doesn't make it cheaper for the neighbour or more expensive for them — it just removes their say in who gets appointed. The receiver-side view of the same decision is in can I refuse a party wall agreement?

One surveyor or two — and who's paying for the difference

A dispute can be settled by one "agreed surveyor" acting impartially for both sides, or by two surveyors — one each — who select a third surveyor as a tiebreak before they start. Since the building owner is usually paying for all of them, the agreed-surveyor route is mostly a saving for them, while remaining binding for both of you. Worth knowing: under the Act a "surveyor" is any person who isn't a party to the matter — it's an unregulated role, which is one reason the professional bodies' directories matter when choosing one.

The output either way is the party wall award — scope, timing and manner of the works, protections, access for inspection, and usually a schedule of condition — and it states who pays what, in writing.

What each route tends to cost

The published averages, for a single agreed surveyor:

Two-surveyor cases run £1,800–£5,400. Hourly rates sit anywhere between £90 and £450, with £150–£200 typical. The award itself is usually the largest single line, though the Act sets no fee scale for it — as the government's own guidance puts it, surveyors' fees are a matter for individual surveyors and there are no set charges. Fees are normally quoted plus VAT — worth checking, because a quote that looks like £1,500 can settle at £1,800.

Two neighbours means two lots of fees

This is the number people miss when they budget. Surveyor fees are per neighbour, not per project. A mid-terrace loft conversion with attached neighbours on both sides means serving both, and potentially paying for a surveyor on each side. A flat can be worse again, because the freeholder is usually an owner too.

Can I choose the surveyor?

You choose yours — and since the Act sets no qualification at all, how you choose one matters more than people expect. You can propose a single agreed surveyor and your neighbour can accept or refuse — they can't be made to accept your pick, and the Act gives them no obligation to explain why. What neither of you can do is un-appoint a surveyor afterwards: appointments must be in writing, and once made they can't be rescinded by the party who made them. Choose carefully rather than quickly.

The three cases where the neighbour contributes

Security for expenses — the protection worth knowing about

Under section 12, the adjoining owner can serve a notice asking the building owner for security before works start — a financial safeguard, so that if the project stalls half-done (a trench open next to your foundations, a wall part-demolished) putting it right doesn't depend on the builder's goodwill or bank balance. The government's guidance describes it as usually reserved for particular circumstances, so think big digs rather than every job.

How much is it, and when do you get it back?

The Act is deliberately quiet on the details, and there's one trap. It doesn't say how much, what form the security takes, or how and when it comes back — all of that is agreed between the owners, or settled in the award. And asking has a catch worth knowing before you ask: once you serve that notice, the building owner is entitled to ask you for security in return, and if you don't meet that within a month, your own request falls away. It doesn't touch your dissent, your right to an award, or your right to compensation for damage — but the security request itself dies. Raise it with your surveyor before serving, not after.

What if the surveyor's fee seems too high?

The building owner owes reasonable fees, so "that's the invoice" isn't the end of the conversation. There's a ladder, and most disputes end on the first rung:

• Raise it with the surveyors. Fees are one of the matters the award itself decides, so this is an ordinary part of the process, not a complaint.
• Go to the third surveyor. On the two-surveyor route, a third is chosen at the outset precisely for deadlocks — and either owner or either surveyor can refer the matter, acting alone. You don't need your neighbour's agreement, or your own surveyor's.
• Appeal the award. The last resort, and a real one: 14 days from the day the award is served on you, to the county court. That clock runs from service on you, not from the date written on the award, so the two owners can have different deadlines.

What the Act doesn't pay for

The cost rules are about the works and the surveyors. Two things people expect to be covered and shouldn't assume are:

Your own legal advice. If you instruct a solicitor — over an appeal, a boundary argument, or a sale — that's a separate decision with separate costs, and not part of the surveyors' fee framework. Where costs do fall inside the dispute, it's the surveyors who decide who pays them; on an appeal, the court decides.

Improvements you asked for. If the neighbour requests extra work for their own benefit, that's the second exception in the table above — they pay for the extra, not the building owner.

What the numbers look like

Serving a notice yourself is free, and a consenting neighbour usually keeps the total near zero. Once surveyors are involved, a typical single-surveyor loft runs around £1,575 — and the full picture, project by project, lives on what a party wall agreement costs, with the London numbers in the London guide. Selling soon? An unresolved party wall matter surfaces on the conveyancing forms, so it's worth settling before it's urgent.

Building, and want to know which notices you'd be paying to get right? The free checker names them in about 90 seconds. Received the notice instead? Start here — remember, the surveyor is probably not your bill.