Boundary walls and the Party Wall Act: homeowner basics
A clear introduction to shared garden walls, neighbour notices and boundary disputes.
Applies to: England and Wales; the Party Wall etc. Act 1996 does not apply in Scotland or Northern Ireland.
Last checked: 16 October 2026
Key points
• A shared garden masonry wall can be a party fence wall under the Act.
• Certain building or excavation work at or close to a shared boundary requires notices.
• A party-wall surveyor cannot decide the legal position of a disputed boundary.
Getting ready to arrange the work?
Search BuildPair for tradespeople who offer the services you need. Check profiles and discuss the details before agreeing to any work.
When the Act can matter
In England and Wales, new building at or on a boundary, work on existing party walls or party fence walls, and some excavation near a neighbour's foundations can trigger the Party Wall etc. Act 1996. It is separate from planning permission.
Before a bricklayer starts
• Check deeds and the location and ownership of the wall.
• Identify if any demolition, height increase, new wall or excavation is proposed.
• Use GOV.UK guidance to check whether formal notice is required and applicable timing.
• Resolve uncertainty with independent professional advice rather than asking the builder to arbitrate an ownership dispute.
Do not assume every boundary fence is a party wall
The statutory definition matters: wooden fences are not party fence walls, and a wall fully on one person's land may not be shared. Each site needs a factual check.
Official sources
Use these official sources for the current detail that applies to your job, contract or location.
BuildPair provides general information and signposting, not legal, structural, electrical, gas or building-control approval. Requirements can change and the right answer depends on the work, contract, location and facts.
Related BuildPair guides
One project. Both sides connected.
A fairer UK marketplace and project platform for homeowners and tradespeople, from first search to finished job.
BuildPair is a marketplace and project platform, not a building contractor or building-control body. See Payments, Terms and Disclaimer for full details.