Selling a house during party wall works

Buyers’ solicitors routinely ask about party wall matters. Whether you are the building owner who did the work or the neighbour who received notice, the answers you give, and the paperwork you can produce, affect how smoothly the sale goes.

Why ownership changes matter

The Act’s rights and duties attach to “owners”. Section 20 includes in the definition a purchaser of an interest in land under a contract for purchase. So when contracts are exchanged, the buyer may be an owner alongside the seller until completion, and becomes the owner after completion. Notices, appointments of surveyors and Awards are made between particular owners, and how they bind a successor depends on the facts. That is why the contract should deal expressly with party wall matters. This is an area where legal advice from your conveyancer is important.

Scenario 1: you are the building owner and sell mid-project

• Before completion of works. The buyer will want to know what remains to be done, who will do it, and whether the Award’s obligations (making good, fees, inspections) are paid for. Common approaches are to complete the notifiable work before completion, or to agree a retention from the price, or for the buyer to take over the project with fresh notices or addendum Awards as advised. Bear in mind that the notices will have been served by (or on) the previous owner, and any Award will carry their names. The position is fact-dependent, so take advice from your conveyancer.
• Security for expenses. If security is held under section 12, agree what happens to it.
• Notice lapse. Notices lapse if work has not begun within twelve months and is not prosecuted with due diligence (s.3(2)(b), s.6(8)). A buyer intending to do the same works later may need to serve new notices.

Scenario 2: you are the building owner and the work is finished

Give the buyer copies of the notices, the consent or Award, the Schedule of Condition, the surveyor’s final inspection or confirmation that any damage has been settled, and building regulations completion certificates. A completed Award with no outstanding claims is reassuring to buyers and lenders.

Scenario 3: you are the adjoining owner and sell during the neighbour’s works

• Disclose that you have received notice and whether you consented or an Award was made.
• The buyer will want to know who will pursue any damage claim. Damage that occurred before completion is generally a matter for the seller to resolve or to address in the contract; your conveyancer should advise.
• Give the buyer the Schedule of Condition; it protects them too.
• Tell the building owner and the surveyors about the sale so future correspondence and access go to the right person.

Scenario 4: work was done without notice

If you (or a previous owner) did notifiable work without notice, a buyer’s surveyor may spot it, for example a removed chimney breast or a steel in the party wall. The buyer may ask for evidence of compliance or a retention. There is no simple retrospective “sign-off” under the Act. The practical answers are: obtain building regulations regularisation if needed, ask the neighbour to confirm in writing that there are no outstanding issues, and resolve any damage. Indemnity insurance is sometimes offered for missing paperwork; your conveyancer can advise on whether it is appropriate. See starting work without notice.

What to disclose

Standard property information forms ask about notices received and works done. Answer accurately: misleading answers can lead to claims by the buyer after completion. Typical documents to provide:

• Party wall notices served or received.
• Written consents and any acknowledgement forms.
• Party Wall Awards and any addendum Awards.
• Schedules of Condition.
• Surveyors’ correspondence confirming completion or settlement of damage.
• Building regulations completion certificates and engineer’s details.

What the buyer’s side usually asks

• Were notices served for all notifiable work?
• Is there an Award, and are all obligations under it complete?
• Are there any outstanding damage claims or disputes?
• Are surveyors’ fees paid?
• Is any security held, and on what terms?

Checklist for sellers

• Gather all party wall paperwork before marketing.
• Ask the surveyor(s) for confirmation of completion if not already given.
• Pay outstanding surveyors’ fees.
• Tell your conveyancer about any ongoing works or claims.
• Tell the neighbour and surveyors about the sale.

Worked example (illustrative)

Illustrative only. Not a real case; not legal advice.

An adjoining owner decides to sell while the neighbour’s loft conversion is under way under an Award. A small crack appeared during steel installation and has not yet been dealt with. The seller’s conveyancer discloses the Award and the Schedule of Condition. The seller asks the Agreed Surveyor to determine the cost of making good under section 11(8), and the building owner pays it before completion. The buyer receives copies of the Award, the Schedule and the surveyor’s confirmation, and the sale completes without a retention.

At a glance

Buying a house next to party wall works

If you are buying and the seller has received a notice, ask for copies of the notice, the consent or Award and the Schedule of Condition before exchange. Ask whether any damage has been reported and how it has been dealt with. Once you have exchanged contracts, you may yourself be an owner under section 20, so make sure the building owner and surveyors know who you are and how to contact you. Your conveyancer can advise on whether to seek a retention or contractual promise from the seller.

Buying a house where the seller did the works

• Ask for the full party wall file: notices, consents, Awards, Schedules and the final inspection.
• Check that building regulations completion certificates cover the same works.
• Look for evidence of structural work such as removed chimney breasts or steels in the party wall, and ask how they were notified.
• Ask whether any surveyors’ fees or damage claims are outstanding.
• If any part of the Award obligations is incomplete, ask your conveyancer to deal with it in the contract.

Keep your records

Whether you are the building owner or the neighbour, keep the party wall paperwork with your property deeds. It is often asked for years later, on a sale or remortgage, and it is the best evidence that work to a shared wall was done properly.

Timing a sale around notices

If you plan to sell soon after serving notice, remember that notices lapse after twelve months if work has not begun and been prosecuted with due diligence (s.3(2)(b), s.6(8)). A buyer who wants to carry out the same scheme may find it simplest to serve new notices in their own name once they own the property. If you are the adjoining owner and you have consented or appointed a surveyor, tell your buyer which option you chose and give them the Schedule of Condition so they know what was recorded before work began.

Whichever side you are on, a short written note from the surveyor confirming the current status of the Award, and that no claims are outstanding, is often all a buyer’s solicitor needs.

Sources and further reading

• Party Wall etc. Act 1996, section 3: Party structure notices (legislation.gov.uk)
• Party Wall etc. Act 1996, section 6: Adjacent excavation and construction (legislation.gov.uk)
• Party Wall etc. Act 1996, section 10: Resolution of disputes (legislation.gov.uk)
• Party Wall etc. Act 1996, section 11: Expenses (legislation.gov.uk)
• Party Wall etc. Act 1996, section 12: Security for expenses (legislation.gov.uk)
• Party Wall etc. Act 1996, section 20: Interpretation (legislation.gov.uk)
• The Party Wall etc. Act 1996: explanatory booklet (GOV.UK)

This guide is general information on the law in England and Wales, written from our surveyors’ practical experience. It is not legal advice; for a specific dispute, take advice on your own facts.

Sources: Party Wall etc. Act 1996 (legislation.gov.uk) · The Party Wall etc. Act 1996: explanatory booklet (GOV.UK). Last reviewed 27 October 2026. General guidance on the law in England and Wales, not legal advice.