COST GUIDES
Party wall surveyor: Cost breakdown 2026
Updated 06/26
For homeowners, the term “party wall” can be a sensitive subject. Sharing a wall with a neighbouring property can complicate even simple home improvements and building work. Therefore, it’s important to understand what a party wall is, when you might need a party wall survey and what it entails.
Fast Facts
The average party wall surveyor cost is £200 per hour
The average cost for getting a party wall award is around £1,000
Costs can vary based on factors like the type of project and size of your home
In this guide, we look at the average party wall surveyor cost in the UK. The costs included in this article are guide prices, to get accurate quotes and professional advice, we recommend you speak to local party wall surveyors.
How much does a party wall surveyor cost?
| Item | Average cost |
|---|---|
| Party wall surveyor (per hour) | £200 |
| Party wall award | £1,000 |
| Type of project | |
| Loft Conversion | £1,575 |
| Extension | £2,025 |
| New Build | £2,475 |
| Basement | £3,375 |
| Last updated: June 2026 Our costs are ballpark averages - get a local tradesperson to quote now | |
The average cost to hire a party wall surveyor currently stands at around £200 per hour.
The cost can be anywhere from £90 to £450 per hour. The price you’ll pay for the survey will depend on the time it takes to carry out all the work relating to the party wall survey.
The average cost for getting a party wall award is around £1,000. As with many building projects, this cost can vary considerably depending on the details of your work planned.
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Cost of party wall surveyor by project type
The type of project you’re planning will have a big impact on average costs.
Here are some ballparks for various project types:
Loft conversion – £1,575
Extension – £2,025
New build – £2,475
Basement – £3,375
Factors affecting party wall surveyor costs
When planning the budget for your party wall surveyor, there are a number of factors you should take into consideration that could affect how long a party wall surveyor work takes to complete:
Number of surveyors needed - you may have one, two or three surveyors involved, which can seriously drive up costs
Size of the property
Quality and completeness of architectural designs
The complexity of the project, such as whether a structural engineer is needed
The level of risk of damage to the neighbouring property
Any negotiation needed
Where you live - surveyors charge more in some areas of the country than others, especially London and the South East
Single surveyor vs two party wall surveyor costs
When a party wall is involved in building plans, there are three possible ways of dealing with the project:
Both the building owner and the neighbouring property owner agree to use the same party wall surveyor.
The building owner uses one party wall surveyor and the neighbouring property uses a different surveyor, but the two come to an agreement.
Two separate party wall surveyors are used but can’t reach an agreement so a third impartial surveyor is hired to reach a final decision.
If the two adjoining building owners can agree on a single surveyor then the party wall surveyor costs will be much lower.
Should they each hire a separate surveyor then it’s possible that the total party wall surveyor cost could double, or even triple if a third surveyor is needed.
Single party wall surveyor costs
For the single party wall surveyor approach, the total cost can range from £900 - £2,700.
Here are some average prices for different projects:
Loft conversion – £900 - £1,200
Extension – £1,200 - £1,500
New build – £1,500 - £1,800
Basement – £1,800 - £2,700
Two party wall surveyor costs
If both you and your neighbour decide to hire separate party wall surveyors then the price tag doubles from the costs shown above – ranging from £1,800 - £5,400.
Loft conversion – £1,800 - £2,400
Extension – £2,400 - £3,000
New build – £3,000 - £3,600
Basement – £3,600 - £5,400
Get an estimate for your party wall survey
With our job estimate tool, you can get an approximate quote for your survey - so you know what costs to expect for your project. Just type in a few details, and the calculator will use Checkatrade data to give you a rough idea of your budget.
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What is a party wall?
According to the UK Government, a party wall is a wall that stands on the land of two or more owners, and either forms part of a building or is built on common land, such as a garden wall. Walls that are officially on one owner’s land but are used by other owners to separate their buildings are also considered party walls.
In 1996, the Party Wall etc. Act was introduced in England and Wales to provide a process for resolving disputes between neighbouring properties. Put simply, the law dictates that changes to a party wall must be agreed upon by all parties who share the use or ownership of the wall.
Basement works and party walls
When carrying out basement works, or full-width extensions to terraced properties, there will be more than one neighbouring property that notice should be served on.
Notice will also need to be served to freeholders and long lessees (if for example, a single house is divided into multiple flats, there may be three or more separate owners that will need to be served notice)
Where excavation will be deeper than the foundations of adjoining owners' properties, a building owner is required to serve notice on all owners within 3m of their property (in some cases, within 6m, depending on the depth of the excavation)
In many cases, you will need to serve notice for a basement on properties that are not connected by a party wall but are within 3m of the proposed basements.
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What does a party wall surveyor do?
A party wall surveyor is someone who is specially trained to deal with disputes that arise regarding a party wall.
They're a trained specialist who manages the formal process when you carry out building work that affects a shared wall, boundary, or neighbouring foundation.
Their job is to draw up a Party Wall Award - a legal document that sets out how the work will be done, what precautions must be taken, and who pays. They act impartially, even if only one surveyor is used by both parties.
For each project, there could be one, two or three surveyors involved.
A party wall survey is different from a full structural survey.
Whether you're considering building your own home, need help planning a property renovation, or guidance on house extension costs, at Checkatrade, we've got you covered.
Do I need a party wall surveyor?
You need a party wall surveyor if your neighbour doesn't agree to your planned building work in writing, or if they dissent when you serve them formal notice under the Party Wall etc. Act 1996 (in England and Wales).
A surveyor is also needed for any work within 3 - 6 metres of a neighbouring foundation, or for basement excavations near adjoining properties.
You'll typically need to involve a party wall surveyor if:
You're planning a loft conversion, extension, or new build that affects a shared wall
Your neighbour dissents to a party wall notice you've served
You're doing basement work or excavating near a neighbouring property's foundations
Your neighbour fails to respond to your notice within 14 days (this counts as dissent)
Who pays for a party wall surveyor?
Typically, the building owner carrying out the work will be responsible for paying any party wall surveyor costs. This includes the neighbour's surveyor if they choose to appoint one separately.
The main exception is if a neighbour's surveyor is found to have caused unnecessary delay or expense. In that case, the third-party surveyor can apportion costs differently.
Tips for dealing with party wall projects
There are certain things you can do to help the process run smoothly and keep costs down. Here are our top 5 tips for dealing with party walls.
Stay friendly with your neighbours. Having a positive relationship with your neighbours can massively help when it comes to building works. Answering questions and settling any disputes personally can save time and money.
Keep your neighbours informed. No one wants to hear about planned construction or structural work from a third party. Keep things informal by having a conversation with your neighbours on a personal level – and do it as early in the process as possible. A friendly chat over a cup of tea can help quash any concerns.
Share your surveyor’s details. Your neighbour is entitled to know who your party wall surveyor is and it shows good confidence that you share their details.
Invest in high quality designs. Clear drawings and concise designs for any planned building work can make a huge difference to timelines. Well-crafted plans will make it easy for surveyors to understand the project and work more efficiently – reducing their time and cost.
Look into fixed-fee quotes. Several surveyors now offer fixed-fee party awards, which can potentially cut the total costs significantly.
Useful party wall surveyor checklist
Party wall survey checklist
Find a local party wall surveyor
Get started in your search for a party wall surveyor with Checkatrade. Enter your postcode to start browsing surveyors who work in your area, compare your options, and request quotes.
You can also post your job to hear back from surveyors available near you, or download the Checkatrade app.
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FAQs about party wall surveyors
Party wall surveyors deal with shared walls and boundaries. They draw up Party Wall Awards - the legal document that governs how building work affecting a shared wall will be carried out. They act impartially to protect both the building owner and the adjoining owner, and ensure the work meets the requirements of the Party Wall etc. Act 1996.
You need a party wall surveyor if your neighbour dissents to the notice you serve them, or fails to respond within 14 days. You'll also need one for basement excavations near neighbouring properties. If your neighbour consents in writing, no surveyor is needed.
The average party wall award costs around £1,000 with a single agreed surveyor.
Yes. If your neighbour consents in writing to the planned work, no surveyor is needed and you don't need a formal Party Wall Award. But if there's any disagreement, a surveyor must be involved - you can't proceed without one once dissent is recorded.
The cost of a surveyor reflects the legal responsibility involved. A Party Wall Award is a binding document and the surveyor bears professional liability.
Fees also vary by project complexity, location (London rates are higher), and whether one or two surveyors are required. Getting fixed-fee quotes and agreeing a single surveyor with your neighbour are the two best ways to keep costs down.
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