Party walls and boundaries
One bulge sits on the party wall of a terrace. Can the home survey decide that the neighbour must pay for it?
No. One bulge on the party wall of a terrace does not let the home survey decide that the neighbour must pay. The survey has recorded a bulge and where it sits. It has not apportioned cost, and it has not found whose work, whose lack of restraint or whose ground caused it. The Party Wall etc. Act is a notice process for certain work affecting a party wall. It is not a bill this inspection has issued. Who pays, if anyone pays, is outside the condition note.
Last reviewed 24 October 2026. Written for buyers in England and Wales unless this answer says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.
What is the fuller explanation?
A party wall is shared fabric. A bulge in it can come from a tie failure, a removed restraint, a leaning chimney, or old distortion, and the cause may sit on either side or on both. The surveyor usually sees your face of the wall and a limited view of the neighbour's. That view can describe the bulge. It cannot hear the neighbour's account or see their side of the loft. Payment is not a surveying measurement.
Describe the bulge to the solicitor as a condition item on the party wall, and ask them what, if anything, the deeds say about repair. Do not send the neighbour a demand based on the survey. If work to the party wall is later proposed, the Party Wall etc. Act may matter to that work, which is a different step from this report. Give a lender the survey's words on the bulge, not a claim that next door has been found liable.
What should you ask your surveyor?
- Where on the party wall did you see the bulge, and from which side?
- Did you decide a cause that would put the cost on the neighbour?
- Have you left payment and any party-wall process outside the condition note?
What are the typical next steps?
- Keep the bulge as a condition note on the party wall.
- Do not read the survey as an order that the neighbour must pay.
- Ask the solicitor what the deeds say about repair of that wall.
Costs vary with the building and with who you instruct. Where this page does not cite a published figure, ask the surveyor, a relevant specialist, or your solicitor for a written quote. Do not treat a forum average as the price.
Also asked about this
If the bulge is only on your side of the terrace, must you pay?
The survey has not decided that either. A bulge seen from your side is still only a description. It does not allocate cost to you or to the neighbour, and the inspection did not try the neighbour's face of the wall.
Does a party-wall surveyor get appointed by this home survey?
No. Nothing in the condition report appoints anyone under the Party Wall etc. Act. That process, if it is needed later for works, starts separately. This visit only recorded the bulge. Keep the party-wall bulge inside the facts the surveyor actually recorded on the day.