If you’re planning building works that may affect a shared wall, a boundary wall position, or foundations close to a neighbour’s property—or you’ve received a notice from next door—it’s worth understanding the Party Wall etc. Act 1996 early. The Act is not there to cause delay. It is there to provide a clear, lawful route for certain works to proceed, while giving neighbours a formal opportunity to respond.
This guide explains the essentials: what a party wall is, what works are “notifiable”, how the notice process works, when surveyors are required, and what happens if agreement isn’t reached.
1) What is a party wall?
A party wall is a wall that relates to two (or more) owners and commonly separates properties in terraced and semi-detached housing.
A party wall can include:
- a shared wall forming part of a building (for example, the wall between two terraced houses), and
- certain masonry boundary walls built astride the boundary line (often called a party fence wall).
(Timber fences are generally not treated as party wall matters.)
There are also situations where a wall stands on one owner’s land but is used by a neighbouring owner to separate buildings. In those cases, the relevant part used by both properties may be treated as part of the shared arrangement.
2) What is a “party structure”?
The Act also refers to party structures, which can include walls, floors, or other structural separations between parts of buildings in different ownership—most commonly in flats.
In plain terms: if you are in a converted building or block, shared structures are not limited to walls; floors and ceilings between units can also be relevant.
3) Party wall is not planning permission or building control
Party wall procedure is separate from:
- planning permission, and
- building regulations approval.
A project can have planning permission and still require party wall notices. Equally, passing building control does not remove party wall obligations.
(Scotland has different rules.)
4) Which works do you need to notify your neighbour about?
The Act generally captures “notifiable works” in three main categories:
A) Building at the boundary (Section 1)
For example:
- building a new wall up to the boundary line, or
- proposals involving the line of junction between properties.
B) Works to an existing party wall or party structure (Section 2, notified under Section 3)
Typical examples include:
- cutting into a party wall to insert beams or supports,
- raising or altering the party wall,
- removing chimney breasts where the shared wall is affected,
- works to shared structures between flats.
C) Excavation near a neighbour’s foundations (Section 6)
Commonly triggered by:
- digging for extension foundations close to the adjoining owner’s building, or
- deeper excavations where proximity and depth are relevant.
5) What is a Party Wall Notice?
A Party Wall Notice is the formal written document served by the building owner (the person doing the works) on the adjoining owner(s) (the neighbour(s) affected).
Key points for beginners:
- It must be served on the correct legal owners.
- It must be served within the correct timeframes.
- It must describe the works clearly enough for a non-expert to understand.
Notices are typically valid for up to 12 months to commence the notifiable works (subject to the Act’s requirements and proper procedure).
6) Notice timing: how much lead time is required?
The minimum notice period depends on the category of work. As a general guide:
- works to an existing party wall/party structure (Section 2 notified under Section 3) typically require around 2 months’ notice, and
- boundary works (Section 1) and excavation (Section 6) typically require around 1 month’s notice.
Practical point: the biggest delays usually come from serving notice late—after the builder is booked and the programme is fixed.
7) What happens after notice is served?
Once a notice is served, the adjoining owner typically has 14 days to respond in writing. They may:
- Consent (agree in writing), or
- Dissent (not consent), or
- Not respond.
A crucial point: silence is not consent. If there is no written consent within the response window, the matter usually moves into the Act’s dispute procedure for process purposes.
Adjoining owners may also serve a counter notice in certain circumstances, requesting additional works (usually at their cost where those works benefit them).
8) What is a “party wall dispute”?
The word “dispute” often sounds dramatic. Under the Act, it frequently means simply: there is no written consent.
If the adjoining owner dissents (or does not respond), the Act provides a structured route to conclude the party wall matters properly rather than leaving everything to informal neighbour negotiation.
9) When do you need a party wall surveyor?
Surveyors are not required in every case. They are typically required where written consent is not provided.
Where surveyors are required, the owners may:
- agree on one surveyor to act impartially, or
- each appoint their own surveyor.
If agreement cannot be reached between surveyors on a particular point, the process provides for a third surveyor mechanism to resolve it in a structured way.
10) What is a Party Wall Award?
A Party Wall Award (sometimes informally called a party wall agreement) is the formal document produced under the Act where the dispute procedure is used. In simple terms, it sets out:
- what notifiable works are permitted under the Act,
- how and when they are to be carried out (in a practical, workable way), and
- who is responsible for reasonable fees and costs within the party wall process.
The purpose of an Award is to provide clarity and a controlled route forward—so works can proceed without uncertainty driving conflict.
11) Who pays the costs?
In many typical domestic situations, the building owner pays the reasonable costs associated with the party wall procedure, particularly where the works are solely for the building owner’s benefit.
If additional works are requested that benefit the adjoining owner, those additional elements are commonly at the adjoining owner’s cost. Where owners cannot agree, surveyors determine the allocation within the statutory framework.
12) Why early action matters
Whether you are the building owner or the adjoining owner, early action is usually the best way to reduce:
- delay,
- pressure,
- and neighbour friction.
Most party wall problems are not caused by the Act. They are caused by late notices, unclear scope, or unrealistic programmes. The earlier the process is started, the calmer and cheaper it tends to be.
Get Cost Saving Pro Advice Now
If you want clear, plain-English guidance on whether your works are notifiable, which notice you need, and how to keep the process moving, contact Simple Survey. We focus on correct notices, realistic timing, and a calm route to conclusion where an Award is required. We are built around low-cost fixed-fee pricing and aim to be the UK’s cheapest party wall surveyors—without compromising professional standards.