How to write your own party wall notice

Last updated: 30 July 2026

You're allowed to do this yourself, and it's free — the government publishes official example letters for every notice type. The catch isn't legality, it's validity: a notice with a defect can be void, and finding that out two months in means starting the clock again. Here's the checklist.

Start from the official letters, not a blank page

The government's guidance includes example letters for every situation — L1 for works to a shared wall or structure, L4 and L6 for a new wall at the boundary, L8 for excavation — free to download and reuse — or take all ten in one PDF, free, with a cover explaining which you need. Which letter fits which project is also covered in the official templates, explained. Contains public sector information licensed under the Open Government Licence v3.0.

The validity checklist

A valid notice contains all of this — miss one item and it may be worthless:

• Your full name(s) — all joint owners of your property — and your address.
• The address of the works property.
• A full description of the proposed works. For excavation: plans and sections showing where and how deep are mandatory, plus whether you propose to underpin or strengthen next door's foundations.
• A proposed start date that respects the notice period — one month for boundary-wall and excavation notices, two months for a party structure notice.
• The date of the notice, a clear statement that it's served under the Party Wall etc. Act 1996, and your signature.
• Service on every adjoining owner — leaseholders with more than a year left and the freeholder. For flats, that's usually both. Who counts as an owner: the flats and leasehold rules.

The six mistakes that void notices

Courts treat these strictly: the Court of Appeal has held that an award built on an invalid notice is void (Power & Kyson v Shah, 2023). The defect doesn't just dent the paperwork — it can undo everything built on top of it.

Serving it properly

Hand it over in person, or post it. Email counts only if the neighbour has agreed to email service and given you an address for it. If you don't know who owns next door — an empty house, an absent landlord — address the notice to "The Owner", and deliver it to someone on the premises or fix it conspicuously to the building.

Keep proof of what you sent, and when

The date of service starts every clock in the Act, so it's the one fact you may later need to demonstrate. Keep a copy of exactly what went out, note the date, and if you post it consider a service that records delivery. If you hand it over, a photo of the envelope and a note of the date costs nothing.

A practical note on posted notices: if it ever matters, time runs from when the notice would arrive in the ordinary course of post, not from the moment you dropped it in the postbox. Post early rather than exactly two months out.

What happens after you serve it

The question every DIY server asks next, and the answer is a fortnight long. Your neighbour has 14 days to respond, and there are three outcomes:

• They consent in writing. Done. No surveyors, no fees, and you can start once the notice period expires. Keep the consent letter — it's the document a future buyer's solicitor will ask about.
• They dissent. A dispute exists in the legal sense — not an argument — and surveyors are appointed to produce an award covering how and when the work happens.
• They say nothing. On a party structure or excavation notice, silence for 14 days is deemed dissent: the dispute procedure starts anyway. Doing nothing isn't a way for either of you to avoid it.

If they dissent but then won't appoint a surveyor, you can serve a written request and, after 10 days, appoint one on their behalf. And once appointed, an appointment can't be rescinded by the party who made it — so choose carefully rather than quickly. What dissent actually does covers it from their side.

Do I need a surveyor just to write and serve the notice?

No. There's no requirement anywhere in the Act to use a surveyor to prepare or serve a notice — that's a job you can do yourself, for free, from the government's own letters. Surveyors become part of the process only if a dispute arises, and at that point the Act requires one (a "surveyor" being any person who isn't a party to the matter).

So paying someone to draft a notice buys accuracy and time, not legality. Whether that's worth it is the next section.

When DIY is fine, and when it's false economy

We sell a notice pack, so take this with the appropriate pinch of salt — but the honest version is that plenty of people should just do it themselves.

DIY is genuinely fine when the works are straightforward (a loft conversion, a single-storey extension), you're dealing with one neighbour whose ownership is simple freehold, relations are decent, and you expect consent. That's the majority of projects, and the whole process may cost you two stamps.

It's false economy when any of these are true:

• Basements, underpinning or piling. Complex engineering, near-certain dissent, and the case for a surveyor from day one rather than after something moves.
• Flats, or complicated ownership. Multiple leaseholders, a freeholder to identify, share of freehold — missing one owner is the classic defect, and it surfaces late. See the flats rules.
• You already expect a fight. If relations are poor, a professionally drafted notice removes one thing to argue about.
• Several neighbours at once. A mid-terrace or a wraparound extension multiplies both the paperwork and the cost of getting it wrong.

The asymmetry is what matters: a notice costs nothing to serve and a defective one can cost you the whole notice period again, with surveyors already engaged. When in doubt, over-serve rather than under-serve.

Get a schedule of condition, even if they consent

The thing DIY servers skip and later regret. A schedule of condition is a dated written and photographic record of your neighbour's property before work starts.

It isn't required by the Act — the government's guidance says so plainly, and then says it's most prudent to do it anyway. Here's why it matters especially to you: if your neighbour consents, no surveyors are appointed, so nobody will prepare one unless you suggest it. And consent doesn't waive their right to compensation if the work causes damage. Without a dated "before", a disagreement about whether a crack is new becomes one person's memory against another's.

Agreed photographs, taken together and dated, cost nothing and protect both of you. It's also a disarming thing to offer — it signals you expect to leave their house as you found it.

Your four routes, honestly compared

Not sure which notices your project needs in the first place? That's the checker's whole job: six questions, free, about 90 seconds — it names the sections, the clocks and who to serve before you write a word.