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Property
The Party Wall etc. Act 1996 is the England and Wales law on notifying neighbours and settling disputes before work on a boundary, a shared wall or a nearby excavation. It matters for insurance because the Act makes the building owner compensate neighbours for loss or damage from the work, and ordinary liability policies do not always pay for damage nobody was negligent in causing.
Part of: Commercial property owners’ insurance
In short
The Act applies in England and Wales only (s.22(4)). A building owner must serve notice before building on the line of junction (s.1, one month), working on a party wall or structure (s.3, two months) or excavating within three or six metres of a neighbour’s building (s.6, one month). If the neighbour does not consent within 14 days, a dispute is deemed to arise and surveyors settle it by an award (s.10). The building owner must compensate neighbours for any loss or damage resulting from the work (s.7(2)). Contract works, liability and non-negligent damage cover all play a part.
Last reviewed 7 October 2026 by the Apex commercial team.
The Act gives a building owner rights to do certain work, in return for notice, a dispute process and compensation for the neighbour. It came into force on 1 July 1997 and does not apply in Scotland or Northern Ireland.
| Work | Section | Notice period |
|---|---|---|
| Building a new wall on or at the boundary (the “line of junction”) | s.1 | At least one month before work starts |
| Work to an existing party wall or party structure, such as cutting in, underpinning, raising or rebuilding (rights listed in s.2(2)) | s.3 (party structure notice) | At least two months before work starts |
| Excavating within 3 metres of a neighbour’s building and deeper than its foundations, or within 6 metres where the dig cuts a 45-degree line from the base of those foundations | s.6 | At least one month before work starts |
Section 3 and section 6 notices lapse if the work has not begun within 12 months or is not carried on with due diligence (s.3(2)(b), s.6(8)). A “party structure” includes floors and partitions separating flats with separate entrances (s.20), so the Act often bites on conversions and mixed-use buildings.
No reply means a dispute. If a neighbour does not consent in writing within 14 days, they are deemed to have dissented and a dispute arises (s.5, s.6(7)). GOV.UK is clear that silence is not agreement.
When there is a dispute, both sides either agree one surveyor or each appoint their own, and those two select a third (s.10(1)). If a neighbour refuses or fails to appoint within ten days of a request, the building owner can appoint on their behalf (s.10(4)).
Surveyors cannot decide where the boundary is. If you start notifiable work without notice, the booklet says a neighbour may seek an injunction or other legal redress.
Party wall work sits across several policies, and the gaps are usually between them. All of this is subject to the policy terms.
| Loss | Cover usually engaged | Where the gaps usually are |
|---|---|---|
| Damage to the new works during the project | Contract works or contractors’ all risks | Existing structures and their contents are often outside the works cover unless added |
| Neighbour’s property damaged through the contractor’s negligence | The contractor’s public liability | Excesses, and policies commonly limiting cover for damage caused by vibration or by removing or weakening support |
| Neighbour’s property damaged with nobody at fault, such as settlement after properly designed underpinning | Non-negligent damage insurance, often arranged as an optional insurance under standard building contracts | Not selected in the contract, so the building owner meets s.7(2) compensation from its own pocket |
| Claim against the building owner as owner or landlord | Property owners’ liability | Wordings may exclude liability arising from construction work above a set value |
| Error by a party wall surveyor in the award or schedule of condition | The surveyor’s professional indemnity | Run-off for retired surveyors; limits too low for structural claims |
Some project policies insure the building owner, the contractor and others in joint names. Ask your broker to map each risk to a named policy before work starts, and to check how the insurer wants to be told about the party wall award.
These examples are illustrative, not real claims.
If this affects your business, these are the points a broker will ask about:
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Send us your current schedule, or tell us about the property if you are arranging cover for the first time. Or leave your number and a named broker will call you back, usually the same working day.
Apex Insurance Brokers is an independent insurance broker based in Bristol, established in 2009 and authorised and regulated by the Financial Conduct Authority. We are not tied to one insurer: we work with over 30 markets, including Lloyd’s syndicates through wholesale brokers, and every client has a named broker who handles the placement, mid-term changes, certificates for clients and the renewal.
The building owner. Section 7(2) requires the building owner to compensate adjoining owners and occupiers for any loss or damage resulting from work done under the Act. If the contractor was negligent, the building owner may recover from the contractor or its insurer, but the neighbour’s claim is against the building owner.
No. The Party Wall etc. Act 1996 extends to England and Wales only (s.22(4)). The government’s explanatory booklet confirms it does not apply in Scotland or Northern Ireland, where different rules govern work near boundaries.
It depends on the work. A new wall on the boundary needs at least one month’s notice (s.1), work to an existing party wall or structure at least two months (s.3), and nearby excavation at least one month (s.6). Notices under ss.3 and 6 lapse if work has not begun within 12 months.
It is cover for damage to neighbouring property caused by building work where nobody was negligent, such as subsidence or vibration damage despite proper design and workmanship. A contractor’s public liability usually only pays when the contractor is legally liable, so this cover fills the gap. It is often arranged as an optional insurance under standard building contracts.
A neighbour cannot stop work the Act permits, but can influence how and when it is done through the dispute process and the surveyors’ award. If notifiable work starts without notice, the government’s booklet says the neighbour may seek an injunction or other legal redress.
Apex arranges property owners’, contract works and liability cover for owners and developers. Tell us about the project and we’ll check where the gaps are before work starts. Or call 0117 325 0027.
Start your quote Call 0117 325 0027Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority. Registered in England and Wales, company number 07014570. This page is general information, not advice on your individual circumstances. Cover is always subject to the insurer’s acceptance and the policy terms, and this page does not guarantee that cover will be available or on what terms.
