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).
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.
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.
