Party Wall Costs Explained: Who Pays When Two Neighbours Appoint Surveyors?
You have finally settled on a design for your home extension. The builder has provided a quotation, your architect has completed the drawings, and the budget is beginning to make sense.
Then your neighbour says they would prefer to appoint their own party wall surveyor.
Suddenly, another expense appears on the horizon.
For many homeowners, this is the point when the party wall process starts to feel confusing. If you have already appointed a surveyor, why might a second one be necessary? Can your neighbour appoint someone who charges considerably more? And who is actually responsible for paying?
These are reasonable questions, particularly when you are already managing the costs of a substantial building project.
The answer depends on the circumstances, but understanding the basic principles of the Party Wall etc. Act 1996 can help you budget more realistically.
Why are party wall surveyors appointed?
The Party Wall etc. Act 1996 establishes procedures for certain building works affecting shared structures, boundary walls and nearby excavations.
If your planned project requires a statutory notice and the adjoining owner dissents, or a dispute arises under the Act, the statutory surveyor appointment procedure may become necessary.
An important point is that a party wall surveyor appointed under the Act is not simply negotiating on behalf of the person who appointed them.
Surveyors have a statutory responsibility to act impartially when determining matters arising under the legislation.
They consider the proposed work, relevant drawings, reasonable protective measures and the practical requirements for carrying out qualifying construction.
The process may result in a Party Wall Award.
At Adam Joseph Chartered Surveyors, homeowners can obtain professional guidance on how the appointment process works and which steps may be needed for their project.
One agreed surveyor or two separate surveyors?
Where both owners are comfortable appointing the same person, they can jointly appoint an Agreed Surveyor.
This can simplify administration because one surveyor deals with the statutory matters on behalf of the process rather than two separately appointed surveyors.
However, using an Agreed Surveyor is not compulsory.
An adjoining owner may prefer to appoint a separate surveyor, even when the building owner has already chosen someone experienced.
That preference does not necessarily indicate hostility.
A neighbour might feel more comfortable having a professional they selected independently, especially where foundations will be excavated close to their home or substantial structural alterations are proposed.
Where two surveyors are appointed, they work together to determine relevant issues under the Act. They must also select a third surveyor who can be called upon in appropriate circumstances if a disagreement requires determination.
Who normally pays the fees?
For typical residential works undertaken solely for the building owner's benefit, the building owner will generally be responsible for the reasonable costs of the statutory party wall process.
That often includes reasonable fees for the adjoining owner's appointed surveyor.
However, responsibility for expenses under the Act depends on its provisions and the facts of the particular case. Costs may be apportioned differently where works are for the benefit of more than one owner or other circumstances apply.
An adjoining owner should therefore not be told that every professional invoice they choose to incur will automatically be paid by the building owner.
The crucial word is reasonable.
Fees should reflect the nature of the work, the tasks properly required and the complexity of the matter.
A modest loft conversion and a technically complicated basement excavation are unlikely to require identical levels of professional involvement.
Why can two surveyors charge different amounts?
Surveying practices do not all operate under the same commercial model.
One firm may charge a fixed fee for clearly defined work. Another may charge based on the time reasonably spent dealing with notices, drawings, inspections, correspondence and an Award.
The location of the project, number of affected properties and complexity of the structural proposals may also influence the work involved.
For example, a surveyor dealing with a straightforward structural beam insertion might need relatively limited documentation.
By contrast, an excavation near an adjoining building with unusual foundation arrangements could require extensive technical review.
The price difference alone does not establish that either fee is unreasonable.
Adam Joseph has previously discussed this subject in Why Is My Neighbour’s Party Wall Surveyor’s Fee More Expensive Than Mine?.
The wider lesson is that fees should be assessed alongside the work actually needed.
What should a surveyor's fee cover?
When requesting a quotation, ask exactly what is included.
Depending on the appointment and the project, the scope may include reviewing proposed works, considering notices, communicating with the other appointed surveyor, reviewing technical drawings, inspecting relevant parts of the property, preparing a Schedule of Condition and dealing with a Party Wall Award.
It is sensible to ask whether further visits or additional work will be charged separately.
For instance, what happens if the architect changes the foundation design after the surveyors have already reviewed the original plans?
Will the surveyor charge more if the structural engineer supplies revised calculations?
What if several adjoining owners are affected by the same scheme?
There is no single answer to these questions, but discussing them at the beginning is better than discovering them after invoices arrive.
Can the building owner challenge an expensive fee?
A building owner does not necessarily have to accept every fee requested by an adjoining owner's surveyor.
Where the relevant surveyors have jurisdiction under the Act, reasonable expenses can be determined through its statutory procedures.
If the appointed surveyors disagree about an issue within their jurisdiction, the third surveyor may have a role.
A decision recorded in an Award may also be subject to statutory appeal rights, including strict time limits.
The important distinction is between querying a fee's reasonableness and simply refusing to pay because it seems inconvenient.
A sensible challenge should address the work undertaken, time spent, complexity and whether the expense was reasonably incurred.
Professional advice is advisable before withholding payment or beginning formal proceedings.
What if your neighbour appoints a surveyor without consulting you?
Under the Act, each owner may exercise their statutory rights concerning surveyor appointments when the relevant circumstances arise.
The building owner cannot insist that the adjoining owner must use the building owner's preferred surveyor.
Nevertheless, a positive relationship can often be maintained by discussing the options before formal appointments are made.
Explain that using an Agreed Surveyor is available if both owners wish to do so, while recognising that the neighbouring owner may reasonably prefer a separate appointment.
Avoid presenting that choice as a condition of maintaining good relations.
Good communication is useful, but it cannot replace statutory rights.
How to reduce unnecessary party wall costs
One of the most effective ways to control expenses is to provide complete information before the surveyors begin substantive work.
Architectural plans alone may not explain the depth of excavation or how steelwork will connect to the existing building.
Where relevant, obtain foundation details, structural drawings and construction method information.
Incomplete or repeatedly changing drawings can lead to extra correspondence, further professional review and delay.
You should also identify the relevant adjoining owners correctly and provide adequate time for notices and responses.
Starting the process shortly before the contractor arrives can create avoidable pressure.
Maintaining constructive relationships with neighbours is equally important. See Adam Joseph's guide to preventing and resolving party wall disputes for related advice.
Is paying for two surveyors worthwhile?
No homeowner welcomes additional professional expenses, especially when construction costs are already high.
But the statutory process serves a purpose.
An appropriately prepared Award can establish arrangements for notifiable works and provide a structured method for addressing relevant concerns.
That can be valuable when neighbours disagree about protection, construction methods or possible damage.
However, appointing two surveyors does not automatically make a project safer than using an Agreed Surveyor. What matters is the competence of the professionals involved and the suitability of the arrangements.
Get advice before committing to unnecessary expenses
Every project has different circumstances.
A surveyor should be able to explain the likely procedure, identify the information required and discuss the basis on which fees may be charged.
Before allocating money to the party wall process, ensure you understand what the service includes and when additional charges might arise.
Adam Joseph Chartered Surveyors provides party wall surveying assistance for building owners and adjoining owners across different locations.
To discuss surveyor appointments, Party Wall Awards or the likely scope of professional work, speak to Adam Joseph Chartered Surveyors before construction begins.
A clear understanding of the process will not eliminate every expense, but it can help you make decisions based on realistic expectations rather than unexpected invoices.
For friendly professional advice, contact Adam Joseph Chartered Surveyors or call 020 3875 9279 now to speak with a specialist Party Wall Surveyor.










