Party wall notices and awards in London
The Party Wall etc. Act 1996 gives you the right to carry out certain works to shared walls and near boundaries — but it also requires you to notify affected neighbours first, and to follow a defined procedure if they don't consent. Serving the wrong notice, or none at all, can leave you exposed to an injunction and disputes long after the work is done.
This is chartered-surveyor work, and it stays there. Hampstead Chartered Surveyors & Building Consultancy (RICS-regulated, Firm Reg. 923064) advise whether the Act applies to your project, serve the correct notices, record the neighbouring property's condition, and — where needed — prepare the Party Wall Award that lets your works proceed lawfully.
Get a chartered surveyor on your party wall notices
Tell us about your works and the neighbouring properties. Your enquiry goes to Hampstead Chartered Surveyors & Building Consultancy (RICS-regulated, Firm Reg. 923064), who will advise whether the Act applies and what has to be served, and reply by email. No obligation, and no fee is quoted on this site.
Check the planning designations first — free
The free check on this site verifies planning designations (conservation area, Article 4) at a property's coordinates. Party wall obligations are separate neighbour-law duties under the 1996 Act — you can need a party wall award even for works that are permitted development. A chartered surveyor assesses this for your specific project.
Or run the free planning permission checker.
What the Party Wall Act covers
The Act applies to three broad categories of work: works directly to a party wall or party structure (cutting in, raising, underpinning), building a new wall at or astride the boundary, and excavating within three or six metres of a neighbouring building below the depth of its foundations.
If your works fall within it, you must serve notice on the adjoining owners before starting. They can consent, or dissent — in which case surveyors are appointed and a Party Wall Award is drawn up, recording the works, safeguards and a schedule of condition of the neighbour's property.
Projects that commonly trigger it
- Loft conversions that cut into or bear onto the party wall
- Rear and side-return extensions built up to the boundary
- Basement and lower-ground digs, and underpinning
- Removing a chimney breast on a party wall
- New foundations near a neighbouring building
- Inserting beams or steels into a shared wall
What Hampstead Chartered Surveyors do
- Confirm whether the Act applies and which notices are required
- Prepare and serve the correct notices on the adjoining owners
- Record a schedule of condition to protect you against later damage claims
- Act as your appointed surveyor, or as the agreed surveyor for both parties
- Prepare the Party Wall Award so works can proceed lawfully
If the scheme isn't designed yet
Party wall notices are served against a fixed structural design — you cannot notify works you haven't yet decided on, and a notice lapses if works don't begin within twelve months of service. The practical sequence is to fix the design, then serve, then build.
- Hampstead Architecture and Planning (ARB-registered) design the extension, loft or basement and take it through planning permission or prior approval
- The structural design is settled, which is what the notice and any award describe
- The chartered surveyor serves the notices — commonly alongside the planning application rather than after consent, so the notice periods run in parallel with the wait
Party wall procedure belongs to the chartered surveyor. If the extension, loft or basement that triggers it is still being designed, that is a separate job: Hampstead Architecture and Planning (ARB-registered) design the scheme and take it through planning, and the notices are served once the structural design is fixed. Ask Hampstead Architecture.
Party Wall matters, answered straight
Do I need a party wall agreement for a loft or extension?
Often, yes. If the works cut into the party wall, are built up to the boundary, or involve excavation near a neighbour's foundations, the Act is likely to apply and notice must be served before work starts. The only way to be sure is to have the specific proposals assessed against the Act.
Is a party wall matter the same as planning permission?
No. Planning permission is consent under planning law; party wall procedure is a separate duty to your neighbours under the Party Wall etc. Act 1996. A project can be permitted development yet still require party wall notices — the two are assessed independently, by different professionals, on different clocks.
What happens if I don't serve notice?
You lose the protections the Act gives you and expose yourself to disputes: an adjoining owner can seek an injunction to stop the works, and without a recorded schedule of condition it becomes much harder to resolve any later claim for damage. Serving notice correctly, in good time, is the protection — not just the obligation.
How far ahead should I start?
The Act sets notice periods (commonly one or two months depending on the work), so it's best to start well before you intend to begin on site. Early notice also gives neighbours time to consent, which avoids the fuller award procedure altogether in many cases.
Planning Permission Checker provides planning and cost intelligence for early feasibility only. It is not legal, planning, valuation, architectural, structural, or surveying advice. All estimates are indicative and must be verified by qualified professionals before purchase, design, planning submission, or construction.
Cost estimates are indicative only — not a quotation. Final price depends on survey, specification, structure, access, party wall matters, VAT, professional fees, and contractor availability.
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