My neighbor started building work without a party wall notice. What are my rights in the UK?

What the Law Says

The Party Wall etc. Act 1996 governs building works affecting shared walls, boundaries, or excavations near neighbouring structures in England and Wales. Under Sections 1–6, certain works—including cutting into a party wall, raising its height, underpinning, or excavating within 3m (or 6m if deeper than neighbour’s foundations)—are 'notifiable'. A valid written notice must be served on all affected adjoining owners at least two months before starting work (for Section 2 works) or one month (for Sections 1 and 6). Failure to serve notice deprives the building owner of statutory protections under the Act and renders them liable for trespass and nuisance at common law. Crucially, the Act does not invalidate the works outright—but it removes the statutory dispute resolution framework and exposes the building owner to potential injunctions and cost liability.

Practical Steps

First, confirm whether the works are actually notifiable under the Act—consult the government’s official guidance or a qualified party wall surveyor. If they are, send a dated, recorded letter to your neighbour stating that no valid notice was served and requesting immediate cessation of works pending compliance. You may then appoint your own surveyor (at the building owner’s expense, per Section 10(13)), who can prepare a retrospective award covering access, condition surveys, working hours, and safeguards. If works continue unilaterally, apply urgently to the County Court for an interim injunction—success depends on demonstrating imminent harm and lack of delay. Keep detailed photographic records and logs of works, noise, vibration, and any damage. Note: Scotland and Northern Ireland operate under separate common law and statutory regimes (e.g., Scottish Tenement Act 2004), so this guidance applies only to England and Wales.

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