Why it matters
Building projects slip. Planning takes longer than expected, a builder is booked up, finance takes time. If the anniversary of service arrives and nothing has started, you will usually need to serve fresh notice and the timetable starts again.
What "begun" means
The work has to have genuinely started. Starting something trivial just to keep a notice alive is unlikely to help if it is challenged.
What happens to an award if the notice lapses
An award made under a notice that has lapsed may no longer be valid for the work. If the project changes substantially or is delayed beyond a year, check the position before going ahead.
If your plans change
If your designs change significantly after serving notice, for example a different beam position or deeper foundations, the original notice may not cover the new work. A fresh notice for the changed elements is the safe route.
Practical tips
- Serve when the design is settled and you are confident of starting within the year.
- If the project stalls, write to your neighbour explaining the delay; it keeps goodwill.
- Keep a dated note of when work actually began.
Common questions
Does a line of junction notice expire?
The lapse rule is written for party structure and excavation notices. For a new boundary wall, the right to put footings under the neighbour's land only runs from one month to twelve months after service, so a long delay still means serving again.
Can my neighbour agree to extend a notice?
The lapse is set by the Act. Serving a fresh notice is the reliable route.
Where this comes from in the Act
- Section 1: New building on line of junction
- Section 3: Party structure notices
- Section 6: Adjacent excavation and construction
Links go to the official text of the Party Wall etc. Act 1996 on legislation.gov.uk.