The Hidden Role of Agreed Surveyors: Why Most Building Owners Are Still Unaware
When starting a home extension, loft conversion, basement build, or structural alteration, many Building Owners discover the Party Wall etc. Act 1996 for the first time. The Act requires formal notices and professional involvement to ensure neighbours (Adjoining Owners) are not negatively impacted. While most people know about appointing a Party Wall Surveyor, surprisingly few have heard of an Agreed Surveyor, a single surveyor appointed jointly by both owners. Despite being one of the fastest, least stressful, and most cost-effective routes available, awareness about the Agreed Surveyor option remains surprisingly low.
This article explores why most Building Owners are still unaware, what an Agreed Surveyor does, and why this route deserves much more attention.
What Is an Agreed Surveyor?
An Agreed Surveyor is a single, impartial professional chosen and appointed by both the Building Owner and the Adjoining Owner to handle all party wall matters.
Their responsibilities include:
- Serving and reviewing Party Wall Notices
- Inspecting the property
- Preparing the Party Wall Award
- Ensuring the works comply with the Act
- Handling disputes fairly
- Maintaining neutrality at every stage
Instead of each neighbour appointing their own surveyor (meaning two surveyors, two separate fees, and more time), the Agreed Surveyor provides a one-stop, balanced solution.
Why Has This Option Remained Under the Radar?
Despite being fully supported under the Party Wall Act, there are several reasons why Building Owners don’t know about this cost-saving choice.
Lack of Awareness in the Construction Industry
Many builders, architects, and contractors focus on design or construction—not party wall procedures. As a result, they often skip mentioning the Agreed Surveyor route.
Most homeowners only discover the Party Wall Act after they apply for planning permission or begin prep work, leaving little time to research all options.
Misconception That “More Surveyors = More Protection”
There's a common belief that each neighbour must have their own surveyor to get a fair outcome.
In reality, the Party Wall Act requires impartiality, not multiple appointments.
A qualified Agreed Surveyor works strictly in the interest of the Act, not any individual party.
Fear of Bias
Adjoining Owners sometimes assume that if they share a surveyor with the Building Owner, the decision might be biased.
However, Agreed Surveyors are legally bound to stay neutral.
Lack of Promotion by Surveyors
Many surveying firms earn more from separate appointments.
Two surveyors means:
- Two fees
- More inspection hours
- More negotiation time
Because of this, some professionals may not promote the Agreed Surveyor route prominently.
Limited Online Information
When homeowners search “Party Wall Surveyor,” most articles and guides focus on:
- Notice types
- Costs
- Dispute procedures
- Formalities
Very few highlight how beneficial the Agreed Surveyor pathway is. As a result, homeowners simply don’t come across it during early research.
What Does an Agreed Surveyor Actually Do?
Agreed Surveyors carry the same authority as two separate surveyors. Their tasks include:
Conducting a Full Schedule of Condition
They visit the Adjoining Owner’s property to record its pre-work condition.
This protects both parties from false damage claims later.
Drafting the Party Wall Award
A Party Wall Award outlines:
- How the works must be carried out
- Working hours
- Access rights
- Protective measures
- Damage repair protocol
- Communication rules
The Award protects neighbours and ensures the Building Owner can proceed legally.
Managing Disputes
If issues arise during the project, the Agreed Surveyor resolves them directly without requiring additional surveyors or lengthy negotiations.
Post-Work Inspections
After the work, the surveyor reinspects the neighbour’s property to confirm whether any damage occurred and, if so, outlines repair procedures.
Why the Agreed Surveyor Option Is Often Better
Cost-Effective
Instead of paying two surveyors, both owners share the services of one.
This can reduce total Party Wall costs by 40%–60%.
Faster Decision-Making
Two surveyors need multiple rounds of communication and revisions.
One surveyor means:
- Shorter timelines
- Quicker Awards
- Earlier construction start dates
In busy building seasons, this can save several weeks.
Reduced Stress for Both Owners
With just one point of contact, there is:
- Less confusion
- Fewer conflicting opinions
- Clearer communication
This encourages a smoother relationship between neighbours.
Legally Valid and Impartial
Many believe impartiality comes only from separate surveyors, but the law states clearly that an Agreed Surveyor must act neutrally.
They must follow the Act, not the Building Owner’s wishes.
Ideal for Simple Residential Works
For routine projects like:
- Rear extensions
- Loft conversions
- Garden walls
- Internal structural changes
The Agreed Surveyor route is efficient and entirely appropriate.
When the Agreed Surveyor Option May Not Be Suitable
While beneficial, it isn't always the right choice.
If Neighbour Relations Are Hostile
If there is already tension, the Adjoining Owner may mistrust joint representation.
Complex Structural Works
Deep basements, underpinning, or boundary disputes sometimes require two specialists with differing technical expertise.
When a Neighbour Declines
Both parties must agree.
If the Adjoining Owner refuses, you cannot force the Agreed Surveyor route.
How Building Owners Can Introduce the Idea to Their Neighbour
You can encourage neighbours by:
- Explaining that the surveyor is impartial by law
- Providing written information from government guidance
- Offering reputable Agreed Surveyor profiles
- Highlighting the cost savings
- Showing sample Party Wall Awards
A friendly conversation often makes them more comfortable.
The Agreed Surveyor route is one of the most efficient yet underused provisions of the Party Wall etc. Act 1996. Despite offering significant cost savings, faster timelines, and reduced stress, many Building Owners remain unaware due to lack of industry promotion, misconceptions about impartiality, and limited public information.
By understanding the role and benefits of Agreed Surveyors, homeowners can make smarter decisions, avoid unnecessary expenses, and ensure smoother projects. As awareness grows, this option is likely to become the preferred pathway for many routine residential builds.
For friendly professional advice, contact us or call now and speak with a specialist Party Wall Surveyor.










