What If My Surveyor and Neighbour’s Surveyor Disagree?
If party wall surveyors disagree, it can feel like your project is stuck and you’re paying for emails that go in circles. Here’s the truth: disagreement is common, and the Act already has a built-in way to break deadlocks without turning it into a bigger fight.
This page explains what disagreement really means, how the Third Surveyor works, what you can do today to move things forward, and how to stop the same problem from happening again.
Best next step if you want this solved quickly: send the right evidence and push for a narrow decision on the exact points causing the delay.
Fast fix box (put this near the top)
If surveyors disagree, do this today
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Ask your surveyor for a written list of the exact disagreement points.
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Send missing evidence within 24 to 48 hours (sections, method statement, programme).
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Set a clear deadline for agreement on wording (example: 5 working days).
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If still stuck, refer only the disputed points to the Third Surveyor.
This simple approach stops the endless back-and-forth and forces a decision.
Want us to unstuck your award?
Send these 5 items and we’ll tell you the fastest route:
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Your drawings (existing and proposed)
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Structural details or engineer notes (if you have them)
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Your target start date
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What the surveyors disagree about (even bullet points)
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Any access issues (side alley, scaffolding, garden entry)
Why surveyors disagree in the first place
Most disagreement is not personal. It’s usually one of these:
1) The scope keeps changing
If the design changes mid-process, surveyors can’t agree on protections because the job keeps moving.
Fix: freeze the scope. Any changes should be issued as a clear revision.
2) Excavation risk is unclear
Rear extensions and side extensions often involve digging close to the neighbour. Surveyors may argue about:
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depth and method
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sequencing
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temporary support
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monitoring for movement
Fix: add a clear section drawing showing depths, plus a short method statement from the builder or engineer.
3) Access is sensitive
Even if access is allowed, neighbours worry about privacy, mess, and damage.
Fix: put strict access rules in writing, including notice period, working hours, protection, and making good.
4) Security for expenses is requested
A neighbour may ask for security if they fear you could start, then stop, leaving their place exposed. That request can be fair or unfair depending on the job and risk.
Fix: tie any security to real risk and clear stages, not guesses.
5) Damage rules are vague
Surveyors often disagree when the award does not clearly say:
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how damage is assessed
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who chooses the contractor
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repair vs payment
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timing for inspections
Fix: add a clear damage procedure and follow-up inspection dates.
6) Fees are getting out of control
Sometimes the argument becomes about surveyor fees and extra visits.
Fix: ask for a simple fee breakdown and limit extra site visits to real milestones.
Section 10 explained in simple terms.
A lot of homeowners hear “Section 10” and assume it means court. It does not.
Here’s the simple version:
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If your neighbour does not consent (or does not respond), a dispute is treated as happening under the Act.
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Once there’s a dispute, surveyors are appointed to settle it by making an award.
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If both owners have their own surveyor, those two surveyors must select a Third Surveyor at the start.
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The Third Surveyor is there in case the two surveyors cannot agree.
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If they get stuck, the disputed points can be referred to the Third Surveyor for a decision so the award can be finished.
What this means for you: surveyor disagreement is exactly why the Third Surveyor exists. It’s not a failure. It’s the system working.
The Third Surveyor: the tie-breaker that gets your award finished
Who is the Third Surveyor?
In a two-surveyor setup, the two surveyors select a Third Surveyor early on. Think of them as a referee who can step in if needed.
What can the Third Surveyor decide?
Usually, only the points in dispute are. Examples:
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access rules
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working hours
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method for excavation and sequencing
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protective measures
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security for expenses
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disputed surveyor fees
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key wording in the award
When should you push for a referral?
When you see the same argument repeating for more than a week and nothing is getting agreed upon.
A good referral is narrow and clear. Example:
Decide the access hours and notice period for scaffolding.
That is far easier than:
Decide on the whole award.
What you should do when you sense a disagreement growing
Step 1: Stop the moving target
If drawings keep changing, everything slows down. Freeze scope and reissue as one clean set.
Step 2: Ask for a point list
Ask your surveyor:
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What are the disagreement points
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what evidence would settle each one
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What compromise wording is acceptable
Step 3: Send the evidence that ends the debate
Most deadlocks end with:
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foundation depths in a section
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structural details (beam bearing, padstones)
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short method statement
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simple programme
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access plan and protection notes
Step 4: Ask for one call between surveyors
A short call often resolves what 30 emails can’t.
Step 5: If still stuck, go to the Third Surveyor
Ask your surveyor to refer only the stuck points and provide a clean pack.
How a Third Surveyor referral works
This is the real-world flow most often:
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Two surveyors exchange draft award wording and mark the disputed clauses
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One surveyor prepares a referral pack with the disputed points
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The third surveyor reviews documents and may ask questions
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The third surveyor decides on the disputed points
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The two surveyors finish the award using that decision
If your pack is clean, it moves faster. If your pack is messy, it drags.
How long does this add?
It depends on how tidy your information is.
You can reduce delay by doing two things:
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Keep the referral narrow
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Provide the evidence the Third Surveyor needs on day one
Who pays when surveyors disagree?
In many residential cases, the building owner often pays reasonable costs because they are the ones carrying out the works. But costs can be adjusted depending on conduct and what is reasonable.
The smart way to control costs is to reduce arguments:
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provide complete drawings and methods early
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avoid scope changes
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keep the dispute points tight
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Refer only to what must be decided.
Can you replace your surveyor?
Sometimes yes, but it can increase delay and cost.
Before you replace anyone, try this:
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Demand a point list and a finish plan
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set a deadline
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refer stuck points to the Third Surveyor
Replacing surveyors mid-process often means the new surveyor has to re-read everything and may want another inspection.
Can you appeal if you think the award is wrong?
There is a court route to challenge an award, and it has a short window. This is legal territory, so if you’re considering it, speak to a solicitor before spending more money on arguments.
Common deadlocks and quick solutions
Deadlock: Method and risk
Fix: engineer note, plus method statement plus staged inspections.
Deadlock: Access
Fix: write rules like a timetable. Include notice period, hours, protection, and making good.
Deadlock: Security for expenses
Fix: link it to risk and stages. Set release points.
Deadlock: Fees
Fix: fee breakdown, cap extra visits, refer disputed fees only if needed.
Add internal links (place these inside the body)
Add these exact anchors in the page, not only at the end:
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In the section “The Third Surveyor”: link the phrase party wall award →
/party-wall-award/ -
In “Access is sensitive”: link line of junction notice →
/line-of-junction-notice/ -
Near the CTA section: link party wall surveyor london →
/party-wall-surveyor-london/
FAQs
What happens if party wall surveyors disagree?
They try to agree on the award. If they cannot, the disputed points can be referred to the Third Surveyor for a decision.
Do we always need a Third Surveyor?
No. Many cases never use them. They are selected so there is a route if agreement fails.
Does disagreement mean my neighbour has won?
No. It just means the surveyors have not agreed on a clause yet.
Can my neighbour stop works because surveyors disagree?
Disagreement itself does not stop work, but starting notifiable works without the right process can create serious trouble. Keep it formal.
Who pays the Third Surveyor?
It depends on the decision and what is reasonable. Keeping the dispute points narrow usually keeps costs down.
How do I speed this up?
Send complete evidence, stop scope changes, set deadlines, and refer only to the stuck points.
