If you share a wall, floor, ceiling or boundary wall with a neighbour, certain building works can trigger duties under the Party Wall etc. Act 1996. The Act applies across England and Wales and is designed to enable development while protecting adjoining owners and occupiers. It does not give neighbours a “veto”, but it does require a clear legal process to be followed before notifiable works begin.
The key message is simple: if the Act applies, you must notify the correct people in writing and follow the statutory steps. Ignoring the process can lead to delay, disputes, and potentially an injunction.
What counts as a “party wall” or “party structure”?
Party wall
A party wall is a wall used by more than one owner. The most obvious example is the dividing wall between two houses.
Party structure
A party structure can include floors or other structural separations between different owners—most commonly between flats.
Party fence wall
A boundary wall can also be a party wall where it is a masonry garden or yard wall built astride the boundary. (Timber fences are not treated the same way.)
What buildings are covered?
The Act is not limited to houses. It can apply to residential, commercial and industrial buildings. If you share a party wall, party structure, or certain boundary walls with another owner, the Act may apply if you—or your neighbour—carry out works to that shared structure.
What kind of building work is covered?
The Act typically captures structural work, including three common categories:
1) Works to an existing party wall or party structure
Examples include:
- structural repairs to the party wall
- underpinning or raising the wall
- removing a chimney breast from the party wall
- cutting in steel beams for works such as loft conversions
2) Adjacent excavation
Excavations close to another building/structure that go deeper than the neighbour’s foundations can be notifiable—commonly where digging foundations for new walls or structural supports.
3) Works to certain shared boundary walls
Demolishing, rebuilding, or altering a masonry boundary wall that qualifies as a party fence wall can be notifiable.
What should you do if your work falls within the Act?
If your proposed works are notifiable:
- Serve written notice on everyone with a relevant interest (this can include multiple “owners”, such as freeholders and leaseholders).
- Make the notice clear: it should identify all building owners, describe the works, and include drawings/details where helpful so the adjoining owner can understand what is proposed.
- Serve it in time (see timings below).
- Try to achieve an amicable written outcome early. If that doesn’t happen, the Act provides the next steps.
Notice periods and response deadlines
Notice periods
As a general rule:
- Two months’ notice is required for works to party walls or party structures.
- One month’s notice is required for certain excavations or new walls built at the boundary.
Response period
Adjoining owners typically have 14 days to respond. If they agree, that agreement should be in writing.
What if the adjoining owner does not agree or does not respond?
If the adjoining owner:
- expressly dissents, or
- does not reply within the response period,
a statutory dispute is treated as having arisen and the Act provides a formal route to resolve matters.
Adjoining owners may also serve a counter notice (commonly linked to works to party walls/party structures), requesting additional works for their own benefit and at their own cost.
What happens once there is a dispute?
At that point, owners either:
- appoint one Agreed Surveyor (a single surveyor acting impartially for both), or
- each appoint their own surveyor, in which case the two surveyors select a Third Surveyor as the statutory backstop.
A key point many homeowners miss: under the Act, a “surveyor” can be anyone other than the owners themselves, but it is strongly advisable to appoint someone with relevant construction knowledge and experience of party wall procedure.
What does a Party Wall Award do?
Surveyors resolve matters by producing an Award, which is a legally binding document. An Award typically sets out:
- the works that may proceed under the Act
- the manner in which they are to be carried out
- how relevant costs and compensation issues are dealt with under the procedure
The goal is practical: replace uncertainty and argument with a clear route forward.
The role of party wall surveyors
Party wall surveyors must act impartially within the scope of the Act. Their job is not to act as a typical “hired advocate”, but to ensure the Act’s requirements are administered properly, efficiently, and fairly, and to produce an Award where required.
Get Cost Saving Pro Advice Now
If you’re unsure whether your works fall within the Party Wall etc. Act 1996—or you’ve received a notice and want a clear response strategy—contact Simple Survey. We keep the process straightforward: correct notices, correct timing, and a calm route to resolution where an Award is required. We’re built around low-cost fixed-fee pricing and aim to be the UK’s cheapest party wall surveyors, without compromising professional standards.