The core principle of the Party Wall etc. Act 1996 is straightforward: it enables an owner to carry out certain works to their building while providing protection to neighbours who may be affected. It is not designed to prevent projects—its purpose is to facilitate lawful works through a clear process.
If you are building, altering, repairing, or improving a property near a neighbour, the best results come from dealing with party wall matters early—ideally at feasibility or design stage—so notice periods, neighbour responses, and project risk can be programmed properly.
When the Act most commonly applies
In practical terms, the Act is typically triggered in three areas.
1) New walls at the boundary line
This can include:
- building a wall astride the boundary (with the neighbour’s agreement), or
- building a wall wholly on your land but up to the boundary line.
2) Excavation close to a neighbour’s foundations
The Act is commonly engaged where you excavate:
- within 3 metres and below the neighbour’s foundation level, or
- within 6 metres in deeper excavation scenarios where the excavation geometry brings it within scope.
3) Works to an existing party wall or party structure
If a relevant structure exists at the boundary (or forms the boundary externally), you may need to serve notice to exercise rights for common works such as: underpinning, thickening or raising; repair or rebuilding; cutting in for structural purposes (including damp-proofing); removing projections/overhangs; cutting in for flashing or weatherproofing; and exposing a party wall where adequate weathering is provided.
What a party wall surveyor actually does
A party wall surveyor may become involved before notices are served (to help confirm what notices are needed and who must receive them) or after a neighbour has received a notice and does not provide written consent.
In plain terms, the surveyor’s role is to safeguard both parties and ensure the works are progressed without unnecessary inconvenience to the adjoining owner, while keeping the procedure compliant and properly documented.
Where the formal route is required, surveyors conclude matters by agreeing a Party Wall Award. An Award typically confirms the right to carry out the works, the time and manner of executing them, and other relevant matters such as access needs, working controls, and any required temporary protection or weathering arrangements.
Surveyors may act as:
- an Agreed Surveyor (one impartial surveyor acting for both owners), or
- separate surveyors for each owner, with a Third Surveyor mechanism available to resolve specific deadlocks.
Why early neighbour engagement reduces delay
One of the most effective ways to keep party wall matters proportionate is simple: avoid surprise. Where possible, a calm conversation ahead of formal service helps neighbours understand the scheme, the likely timescales, and what is being proposed—reducing the likelihood of immediate resistance driven by uncertainty.
Costs: who pays and what drives the figure
Costs vary depending on complexity, the number of affected neighbours, and how smoothly the matter progresses. In most scenarios, the Building Owner (the person instigating the works) is responsible for fees arising under the Act—including, in many cases, the neighbour’s reasonable professional costs where applicable.
Where works are needed due to a defect in a party wall or party fence wall and responsibility is shared, cost apportionment can be assessed as part of the party wall procedure.
Fees are often hourly, though fixed fees can sometimes be agreed in advance depending on the scope and the likely route to conclusion.
Get Cost Saving Pro Advice Now
If you want party wall matters handled clearly, promptly, and without unnecessary cost, contact Simple Survey. We focus on early clarity, correct notices, proportionate Awards, and proactive file management—and we aim to be the UK’s cheapest party wall surveyors without compromising professional standards.