Who is who in the Party Wall Dispute World

Last Updated: August 24, 2026

Table of Contents

It can be complicated to understand who is who and what role each plays in the Party Wall Award process. This blog offers a quick rundown of who does what. Remember, in the Party Wall Act, the word dispute actually refers to the building work, not an argument!

Key Takeaways

  • Know the key roles quickly: Westville explains who the Building Owner and Adjoining Owner in Surrey & Londonare and why “dispute” in the Act often means the process, not an argument.

  • Understand your surveyor options: We explain the difference between Building Owner’s Surveyor, Adjoining Owner’s Surveyor, and when you might use an Agreed Surveyor (one surveyor acting impartially for both).

  • Don’t panic about the “Third Surveyor”: A Third Surveyor is required when two surveyors are appointed, but they’re usually only called on in more complex cases.

The Building Owner.

The Building Owner is the central figure in the process. They intend to carry out the work, and therefore, they are the instigator in the process. Note that this does not mean they pay all the fees.

The Adjoining Owners

This means your neighbours or the other sharers of an internal wall, a chimney, or a boundary. It can include the OWNERS of land, buildings, or rooms in adjoining properties. Adjoining needs some defining, as it can also mean any neighbour within 3-6 metres of the Building Owners’ property. (See section 6 of the Act). Included are any leasehold or freehold owners.

The Building Owners Surveyor

In a sense, anyone except those involved on either side of the building works can act as the Surveyor, although it would be wise to hire a professional surveyor like Westville Associates. The Act states that a surveyor needs to be elected. See who can be a PW Surveyor.

The Adjoining Owners Surveyor

Although it is common to use a single surveyor for the price of property in the UK, it is wise for the other side to have their own Surveyor in place, especially if the work by the Building Inspector involves foundations in any way (which could lead to subsidence). It is your neighbour’s legal right to appoint one should they wish.

Again, this person can be anyone not involved in the dispute.

Their role is to monitor the actions of the Building Owners’ Surveyor and ensure that the law is complied with and that any proposed work does not damage the Adjoining Owners’ property. This is achieved by arranging for the other Surveyor to carry out a schedule of condition, i.e., the condition and state of the adjoining wall and property, before any building work.

The Third Surveyor

When two surveyors are appointed, the Party Wall Act requires a third surveyor. This is the law. However, what is not covered is that the third Surveyor needs to be told they have been selected; mostly, they are not informed and represent a tick box!

In the majority of cases, the Third Surveyor is not called upon except in extremely complex builds. See do I need another surveyor!

The Agreed Surveyor

When the Adjoining owner is informed of new building work, they must appoint their own Surveyor. However, they can agree to share the same Surveyor. This is a very common practice that Westville has found over the last 10 years. Not only does it save time, it saves money. The agreed Surveyor is trusted to act impartially at all times in the interests of both property owners.

Design Engineers

This terms covers the structural engineer that produce the structural elements of the proposed design. Their role is more prominent with basement projects.

Advising Engineers

These engineers shadow the design engineers and typically are employed by the Adjoining Owners.

Contactors

These are the builders tasked with carrying out the works.

Architects

The person or practice responsible for the design of the proposed work and the person with the most knowledge about the proposed build.

Adjoining Occupier

A person other than the Adjoining Owner who resides in the next-door property. Usually, tenants with leases of less than 12 months have limited rights and obligations and a building owner is not required to serve a notice of intended works.

Appointing Officer

Section 10.8 of the PW Act covers circumstances where two surveyors fail to agree on the selection of the third surveyor. Such appointments are rare and are made by your local Authority.

Confused.

  • Let Westville Associates help. Contact us for a quote on all Party Wall Award matters here.

Our Lead Surveyor

Simon Burrage surveyor

While I specialise in building surveys and party wall work, I can also assist with a range of other survey services. I work with Architects, homeowners, and Landlords across Surrey and London. I have over 10 years of experience and have many clients who have been using me for years. I look forward to meeting new clients and am passionate about helping them solve any issues their new property may have.

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Chris Thoume
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Great experience working with Simon: he took me through the process in simple terms and was always willing to provide considered pragmatic advice.
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Jessica Sanzone
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Would highly recommend using Westville Associates. Appointed Brett to act for us in regards to some party wall matters. We found him to be polite and professional with a wealth of knowledge in this field. Great communication throughout the process. Great service from start to finish.
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Kate Rennie
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I was recommended to use Westville Associates through a colleague to carry out a survey of a house we were looking to purchase. I couldn’t have been happier with the whole process. From start to finish, Simon was professional, punctual, through and gave good advice with issues that arose from the survey. I have and will continue to recommend Westville Associates to anyone wishing to carry out any surveys.
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Niki Yazdanian
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Simon carried out a full building survey for us on a property in Oxted. We found him to be prompt, professional, very knowledgeable, a great service all round. We would have no hesitation in recommending him and using him again.
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Sophie Beed
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Really recommend Westville, great communication and advice. Clear, concise and quick report and more than happy to discuss any points to help us understand our purchase better.
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Sara Mahdavian
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We used Wesville Associates for a full Building Survey for our property in Claygate after a recommendation from a friend. Simon was very personable, knowledgable and professional, and was able to work around our tight timeframe. We felt in good hands from the start!
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“Westville Associates undertook a homebuyers report for us prior to the purchase of our flat in Wandsworth. The service from start to finish was exemplary. Simon booked us in, undertook the inspection and presented the report to us all within 7 working days which was appreciated as time was against us somewhat. The after sales care was also great as we had several questions about the property that were dealt with over the phone. Friendly, professional and prompt service. Would definitely recommend. Rob.”
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Craig C
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I have worked in Surbiton and the surrounding areas as an agent for over 10 years and could not recommend Simon highly enough. He has a wealth of knowledge and goes above and beyond to ensure his clients fully understand the fantastic reports he creates, unlike many other surveyors who just send a confusing report without further explanation of key points. I am so pleased Simon has set up his solo venture - Westville Associates and will be recommending him to all of my clients.