Overview
Building near a boundary is one of the most common reasons for serving a party wall notice. The correct process depends on whether the proposed wall is wholly on your land or astride the boundary.
A key point is often misunderstood: building a wall wholly on your own land up to the boundary usually requires notice, but not the neighbour's consent. Building a wall astride the boundary does require the neighbour's express consent.
1. Understand the proposal early
At design stage, decide whether the wall will be:
- wholly on the building owner's land but up to the boundary; or
- astride the boundary, meaning it sits partly on each owner's land.
This distinction matters because the legal consequences are different.
2. Serve the correct line of junction notice
If section 1 of the Party Wall etc. Act 1996 applies, the building owner should serve a line of junction notice at least one month before the intended start date.
The notice should clearly describe the proposed wall. Drawings are often helpful because they show whether the wall is up to the boundary or astride it.
3. Speak to the neighbour before serving notice
A friendly conversation before formal notice is usually worthwhile. Explain the proposal, show the drawings and deal with obvious concerns early.
This can improve the chance of consent where consent is needed and reduce the chance of unnecessary escalation where only notice is required.
4. Understand the possible responses
The adjoining owner may:
- consent to the wall being built astride the boundary;
- refuse consent to an astride boundary wall, in which case the building owner must usually build wholly on their own land;
- raise concerns that can be dealt with by explanation, design adjustment or the appointment of surveyors where the Act provides for it.
A neighbour's refusal to consent to an astride wall does not normally stop the building owner building a wall wholly on their own land, provided all other legal requirements are met.
5. Keep proper records
Keep copies of:
- the notice;
- proof of service;
- drawings;
- the neighbour's written response;
- any agreement about access, protection or timing.
Good records help prevent arguments later.
6. Appoint surveyors if needed
If a dispute arises under the Act, surveyors may need to be appointed. An agreed surveyor can often keep the matter simpler and cheaper where both owners are comfortable with one impartial surveyor.
7. Maintain good relations during the works
Even where consent is not legally required, good communication helps. Keep the neighbour updated about start dates, noisy works, access and any changes to the programme.
Example timeline
- Initial discussion: one to two months before service of notice.
- Serve notice: at least one month before starting work.
- Wait for response: usually 14 days is allowed for a response.
- Resolve any dispute: appoint surveyors if required.
- Start work: once the notice period and any required process have been dealt with.
Conclusion
A wall wholly on your own land up to the boundary and a wall astride the boundary are not the same thing. The first usually requires notice. The second requires the neighbour's consent. Getting that distinction right at the start avoids delay, cost and unnecessary dispute.