The Party Wall etc. Act 1996 is legislation in England and Wales designed to prevent and resolve disputes in relation to shared walls or structures, boundary walls, and certain types of excavation near neighbouring buildings.
It provides a statutory framework for neighbours to follow when building works affect adjoining properties, and it establishes the rights and duties of each party to avoid or manage disputes.
The Act does not apply in Scotland or Northern Ireland.
Need help with party wall matters?
For expert guidance and support from qualified surveyors, see our party wall services.
Why was the Act introduced?
Prior to 1996, there was no formal legal mechanism in England and Wales for dealing with disputes over party walls, unlike in London which had its own legislation.
The 1996 Act brought a consistent approach across the rest of the country, giving legal rights and responsibilities to both the person undertaking the works and their neighbour.
When does the Party Wall Act apply?
The Act typically applies in three categories of work:
1. Work on an existing party wall or party structure
This includes:
- Cutting into a party wall (for example, to insert a beam or flashing)
- Removing chimney breasts attached to a party wall
- Raising the height or increasing the thickness of a party wall
- Underpinning or repairing a party wall
2. Construction of a new wall at or astride the boundary line
- Building a wall that stands directly on the boundary (a party wall)
- Constructing a wall entirely on your own land but up to the boundary (not strictly a party wall, but still covered under the Act)
3. Excavations near neighbouring buildings or structures
- Excavating within three metres of a neighbouring building and to a lower level than its foundations
- Excavating within six metres if the works involve deeper foundations (e.g. for piles)
Definitions under the Act
Party wall
A wall that:
- Forms part of a building and stands on the boundary between two properties, or
- Stands wholly on one owner’s land but is used by two or more owners to separate their buildings
Party fence wall
A boundary wall not part of a building (usually in gardens), built astride the boundary line and used jointly by the owners.
Party structure
Includes floors or walls separating different parts of a building owned by different persons (e.g. flats).
What must you do under the Act?
If your proposed works fall within the scope of the Act, you are legally required to serve notice on all affected adjoining owners. This must be done:
- At least two months before work starts for party structure works
- At least one month before excavations or new boundary walls
You do not need planning permission to serve a notice.
How does the notice process work?
Step 1: Serve notice
You must write to your neighbour with a Party Wall Notice, outlining the proposed works and when they are due to start.
This can be done in person or by post. If the neighbour has tenants, they should also be informed.
Step 2: Adjoining owner’s response
The neighbour has 14 days to:
- Consent in writing – the work can proceed (subject to other approvals)
- Dissent – a party wall dispute arises, and a surveyor(s) must be appointed
If the neighbour does not respond within 14 days, a dispute is automatically deemed to have arisen.
Step 3: Appoint surveyor(s)
- Agreed surveyor: Both parties can appoint a single surveyor to act impartially.
- Separate surveyors: Each party can appoint their own surveyor. The two surveyors will then select a third surveyor who can determine a dispute if owners/surveyors cannot agree.
Step 4: Party Wall Award
The surveyor will produce a Party Wall Award (also known as a Party Wall Agreement). This document sets out:
- What work is allowed
- How and when it will be done
- Protective measures for the neighbour’s property
- Access rights
- Schedule of condition (before works begin)
Once the Award is agreed, the building owner may legally begin works in accordance with it.
What if a neighbour refuses?
Neighbours cannot stop the works indefinitely, but they can delay them by dissenting and requiring a formal agreement.
If the neighbour obstructs access without reason, the matter can be taken to the Magistrates Court and they may be found guilty of a criminal offence.
Do you always need a surveyor?
If your neighbour consents in writing to the notice, and you have a good relationship, you may proceed without a surveyor.
However, a schedule of condition (a photographic and written record of the neighbour’s property) is strongly advised, even informally, to protect against later claims of damage.
Costs and responsibility
The building owner (the person carrying out the works) generally pays:
- For all notices
- The cost of surveyor(s)
- The cost of the works
- Any remedial works if damage occurs
Exceptions exist, for example if the work is for the benefit of both owners.
Access rights under the Act
The Act gives the building owner the right to access neighbouring land (with reasonable notice) if necessary to carry out works covered by the Act.
This access must be reasonable and is strictly limited to work authorised under the Party Wall Award.
Common misconceptions
- Planning permission does not override the Party Wall Act. You must comply with both.
- Verbal agreement is not sufficient. All consents must be in writing.
Fence panels and wooden garden fences are not party fence walls under the Act.
Frequently Asked Party Wall Questions
Do I need to serve notice for a loft conversion?
Yes, if the conversion involves raising the party wall for a dormer, cutting into a party wall to insert steel beams or if it impacts the shared structure.
Can my neighbour stop me from doing the works?
No, but they can require that works are managed fairly and professionally through the appointment of a surveyor and the issuance of an Award.
What happens if I ignore the Act?
You can be taken to court and potentially ordered to stop work or pay for damage. Failing to serve proper notice is a civil offence, not criminal, but it may lead to costly legal disputes and delays.
Can I do the notice myself?
Yes. There is no requirement to use a surveyor to serve the notice. Templates are available online, but it is crucial to ensure they are accurate. If the notice is not valid and needs to be reserved, the whole process has to start again.
How long is a notice valid for?
A notice is valid for one year from the date it was served. If work does not begin within that timeframe, you must serve a new notice.
What if there is more than one adjoining owner?
You must serve notice on each freeholder, leaseholder and Tenant (if they have an interest of more than one year) who shares the relevant boundary or structure.