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The Party Wall etc. Act 1996 explained in plain English

The Party Wall etc. Act 1996 came into force on 1 July 1997 and applies throughout England and Wales. It replaced a patchwork of local rules, most notably the London Building Acts, with a single national procedure for work to party walls, at the boundary and near neighbouring foundations. This is a section-by-section walk through what it says and how surveyors apply it.

JG

Written by John Greenan AssocRICS, MFPWS, ACABE

AssocRICSMFPWSACABE

Party wall and residential property surveyor with 25+ years’ experience in surveying and construction. Last reviewed 27 October 2026.

Short answer: The Act gives building owners rights to carry out specific work to party walls (s.2), to build at the boundary (s.1) and to excavate near neighbours’ foundations (s.6), provided they serve written notice first. Adjoining owners can consent or dissent; disputes are settled by impartial surveyors through a binding Party Wall Award (s.10), with a 14-day right of appeal to the county court (s.10(17)).

What the Act is for

Party walls are shared structures: each owner usually owns their half, and the Act treats the wall as a whole. Without the Act, cutting into or raising a wall you half own could be a trespass against your neighbour. The Act resolves that by giving the building owner statutory rights, and the adjoining owner statutory protection, through a notice-and-dispute procedure. It is designed to prevent disputes and, where they arise, settle them quickly without going to court.

The key sections at a glance

SectionWhat it doesNotice
s.1New walls on the line of junction (the boundary), either astride it with consent or wholly on your land1 month
s.2Rights of the building owner over existing party walls and structures: raising, underpinning, cutting in, cutting away projections, flashings and moreVia s.3
s.3The party structure notice needed before any s.2 work2 months
s.4Counter notices: the adjoining owner can ask for extra works for their benefitWithin 1 month
s.5No consent within 14 days means a dispute is deemed to arise14 days
s.6Excavation within 3 m or 6 m of a neighbouring building or structure1 month
s.7No unnecessary inconvenience; compensation for loss or damage; protection when premises are laid open; works to follow agreed plans–
s.8Rights of entry to the neighbour’s land to carry out notified work14 days
s.10Resolution of disputes by surveyors and the Award; appeal–
s.11Who pays for the work itself; payment in lieu of making good–
s.12Security for expenses–
s.15How notices are served, including by email where agreed–
s.16Offence of refusing or obstructing lawful entry–
s.20Definitions: party wall, party structure, owner, special foundations–

Key definitions (section 20)

  • Party wall has two meanings. First, a wall that forms part of a building and stands on the land of different owners (beyond just its footings), such as the shared wall between a pair of semis. Second, the part of a wall on one owner’s land that separates buildings belonging to different owners, such as where your neighbour’s extension has been built against your wall.
  • Party fence wall: a masonry wall, not part of a building, standing astride the boundary and separating two gardens. Timber fences are not party fence walls.
  • Party structure: a party wall, and also a floor or other structure separating parts of a building approached by separate staircases or entrances, such as the floor between two flats.
  • Owner: includes a freeholder, a leaseholder with a lease of more than a year, and a purchaser under contract.
  • Special foundations: foundations using an assemblage of beams or rods to distribute load, which in practice means reinforced concrete. They cannot be placed on a neighbour’s land without written consent (s.7(4)).

Section 2 rights in more detail

Section 2(2) lists the building owner’s rights, lettered (a) to (n). The ones that come up most in domestic work are: (a) underpin, thicken or raise a party structure; (b) repair or rebuild a defective party structure; (e) demolish and rebuild a party structure that is not strong enough or high enough for the intended building; (f) cut into a party structure for any purpose, including inserting a damp-proof course or a beam bearing; (g) cut away footings or projecting chimney breasts, jambs or flues; (j) cut into the neighbour’s wall to insert flashings; and (n) expose a party wall previously enclosed, subject to adequate weathering. Many of these come with built-in obligations to make good damage (s.2(3)–(6)). Our section 2 guide covers all of them.

The protections for neighbours

  • Advance notice, with details of the work.
  • Work must not cause unnecessary inconvenience (s.7(1)).
  • The building owner must compensate for any loss or damage resulting from the work (s.7(2)), and the adjoining owner can ask for a payment instead of the builder making good (s.11(8)).
  • Where the work lays open the neighbour’s property, the building owner must provide hoarding, shoring or temporary protection (s.7(3)).
  • The work must follow the agreed or awarded plans, with no deviation unless agreed or determined (s.7(5)).
  • Security can be required before work starts (s.12).

How disputes are settled (section 10)

If the neighbour dissents, or is deemed to dissent, the owners either concur in appointing one Agreed Surveyor (s.10(1)(a)) or each appoint a surveyor, and those two select a third surveyor (s.10(1)(b)). Appointments must be in writing and cannot be rescinded (s.10(2)). If a party will not appoint, the other can appoint for them after a 10-day request (s.10(4)). The Agreed Surveyor, or any two of the three, settle the dispute by Award (s.10(10)); the third surveyor is called on only if the two cannot agree (s.10(11)). The Award may determine the right to do the work, the time and manner of doing it, and costs (s.10(12)). It is conclusive unless appealed to the county court within 14 days of service (s.10(16)–(17)).

Surveyors appointed under the Act are not advocates. Even a surveyor appointed by one owner has a statutory role to settle the dispute fairly between both.

Worked example: three neighbours, three notices

Illustrative only. Tom owns a mid-terrace house and plans a rear extension and a loft. The loft steels bear on both party walls (s.2, two months’ notice to both neighbours). The extension’s foundations are within 3 m of the left-hand neighbour’s back addition and deeper than its foundations (s.6, one month), and its new flank wall is built up to the boundary (s.1, one month). The house behind is more than 6 m from the dig, so it is not an adjoining owner for s.6. Tom serves combined notices to both neighbours two months ahead. One consents with a Schedule; the other dissents and appoints their own surveyor, so the two surveyors select a third and agree an Award between them.

What the Act does not do

  • It does not change who owns a wall or where the boundary is, and surveyors cannot decide boundary disputes.
  • It does not replace planning permission or Building Regulations.
  • It does not let a neighbour veto work the building owner is entitled to do.
  • It does not apply in Scotland or Northern Ireland.

Sources and further reading

Section references are to the Party Wall etc. Act 1996 as it applies in England and Wales, checked against legislation.gov.uk. This guide is general professional guidance, not legal advice; every project should be assessed on its own drawings.

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Sources: Party Wall etc. Act 1996 (legislation.gov.uk) · The Party Wall etc. Act 1996: explanatory booklet (GOV.UK) · Faculty of Party Wall Surveyors (FPWS). Last reviewed 27 October 2026. General guidance on the law in England and Wales, not legal advice.

Frequently asked questions

Does the Party Wall Act apply in Scotland?

No. It applies only in England and Wales.

Does the Act apply to council or Crown property?

Yes. The government booklet confirms it applies to Crown, government and local authority property, which can be both building owner and adjoining owner.

Is there an official notice form?

No. The Act sets out what a notice must contain and the booklet gives example letters. Many surveyors use their own templates.

When did the Act come into force?

1 July 1997. Before that, inner London had similar rules under the London Building Acts, which the 1996 Act extended nationwide.

Can I serve a party wall notice by email?

Yes, but only if the recipient has said they are willing to receive notices by email and given an address (s.15(1A)). Otherwise use hand delivery or post.

Is a timber fence a party fence wall?

No. A party fence wall is a wall, typically masonry. Timber fences are outside the Act.

Can a surveyor decide where my boundary is?

No. Surveyors under the Act can only settle matters connected with notifiable work. Boundary disputes are for the courts or other dispute resolution.

Is it an offence to refuse a contractor access?

It can be. Under s.16 an occupier who refuses or obstructs entry they know someone is entitled to under s.8 commits an offence, but only where proper notice of entry has been given.

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