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What Should a Party Wall Notice Contain in London?

A valid London party wall notice must state: building owner full name + service address, address of the works, statutory section being served (s1 Line of Junction / s2 Party Structure / s6 Adjacent Excavation), full description of proposed works with scaled drawings, proposed start date (≥2 months ahead for s1 + s6 notices, ≥1 month for s2). Date of notice + signature required. Use RICS or Faculty of Party Wall Surveyors (FPWS) free template — DIY freeform notices regularly invalidated.

01

Statutory content requirements

Party Wall etc. Act 1996 s3, s5, s6: every notice must identify the building owner (person commissioning the works — leaseholder with >1yr unexpired term + freeholder both qualify as building owners and can serve); state service address (where notices can be received back); identify the affected adjoining owner property by full address; cite which section of the Act applies (s1 line of junction notice for new wall on/astride boundary; s2 party structure notice for works to existing shared wall — underpinning, raising, cutting in, demolishing, rebuilding; s6 adjacent excavation notice for foundations within 3m of neighbour's structure to depth ≥ neighbour's foundations, or within 6m to depth below 45° downward line); describe works in plain English with scaled drawings (typically 1:50 plan + section showing wall, neighbour structure, proposed works); state proposed commencement date — minimum statutory periods: s1 + s6 = 1 month notice; s2 = 2 months notice. Notice date + building owner signature mandatory. Multiple sections often served as combined notice for a single project (e.g. side return = s1 + s2 + s6).

02

Service + delivery

Service methods (s15 Act): (1) personal delivery to adjoining owner — record date + signature; (2) first-class post to last-known address (deemed served 2 working days after posting per Interpretation Act); (3) leaving at last-known address with householder; (4) where adjoining property is unoccupied + owner address unknown — fix to conspicuous part of premises (rare; only after diligent enquiry). Email service is NOT statutorily valid unless adjoining owner has expressly agreed in writing — many invalid notices result from email-only service. Each adjoining owner served separately — for a London semi or terrace this often means 2 separate notices (left-hand + right-hand neighbour) for a rear extension; corner / mid-terrace basement can require 3–4 notices. Multi-let flats: serve both leaseholder + freeholder of each adjoining flat (s20 'owner' definition). Notice expiry: if works haven't started within 12 months of notice service, notice lapses + must be re-served.

03

Free templates + common drafting errors

Free templates: RICS party wall guidance note (rics.org); Faculty of Party Wall Surveyors (fpws.org.uk) — model notices for s1, s2, s6 + combined; Pyramus & Thisbe Club model notices. All free, all compliant with the Act — use these in preference to drafting from scratch. Common errors that invalidate notices: vague works description ('extension at rear') — must specify excavation depth, beam sizes, wall thickness; missing section citation; insufficient notice period; missing scaled drawings (verbal description alone insufficient for s2/s6); incorrect adjoining owner (served leaseholder when freeholder also needed; missed adjoining flat above/below); proposed start date in the past at time of service; multiple addresses on single notice without identifying which neighbour is being served. Invalid notice = restart 1–2 month statutory clock; major programme delay. Cost: free if DIY (template + post); £125–£385 + VAT per notice if party wall surveyor drafts + serves on building owner's behalf — recommended for first-time builders or multi-section combined notice.

More questions

Related questions answered.

Do I need a solicitor or surveyor to serve the notice?

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No — a valid notice can be served by the building owner directly using a free RICS/FPWS template. Surveyors are statutorily appointed only AFTER an adjoining owner dissents (s10 Act) — serving the notice itself doesn't require professional involvement. Many small-extension builders DIY-serve notices to save £300–£800. For complex schemes (basement, multi-flat, combined s1+s2+s6) a surveyor drafting reduces invalidation risk.

Can the same notice cover all adjoining neighbours?

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No — each adjoining owner receives a separately addressed notice (their property address as the affected adjoining property). A single drafted notice template can be copy-served to each neighbour with the relevant property + owner details substituted — but it is procedurally one notice per neighbour. Logging service date + method per neighbour critical for proving statutory compliance later.

What if I get the notice wrong?

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An invalid notice has no statutory effect — the 1/2-month clock doesn't run and any subsequent dissent + award process is void. If you discover an error before works start, withdraw + re-serve a corrected notice (programme delay 4–8 weeks). If error is discovered mid-works, you may be trespassing on neighbour's land without lawful authority + exposed to injunction + damages claim. Always verify notice validity (template + content + service method) before commencing — most party wall surveyors offer a £85–£185 notice review.

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