Agreed Surveyor vs Separate Surveyors

When a party wall dispute arises, one of the first decisions is how to appoint surveyors. You can either jointly instruct one Agreed Surveyor or each appoint your own surveyor. Below is a practical comparison to help you choose the right route for your project and neighbour relationship.

Option 1: Appointing an Agreed Surveyor (one surveyor for both owners)

Why people choose this:

  • Lower overall cost: One professional instead of two usually reduces fees; the Building Owner typically pays.
  • Streamlined process: With a single point of contact, decisions and drafting the Award often happen faster.
  • Impartial by duty: Party wall surveyors must act independently, even when appointed by both parties.

Potential drawbacks:

  • Perception of bias: Even with impartiality, one surveyor can feel “too close” to one side, undermining trust.
  • Fewer viewpoints: You lose the benefit of two professionals testing each other’s assumptions.
  • No Third Surveyor safety net: With separate surveyors, the Act requires appointing a Third Surveyor to determine issues if the two disagree. With an Agreed Surveyor, that escalation route isn’t available.

Option 2: Each Party Appoints Their Own Surveyor

Why people choose this:

  • Dedicated representation: Each owner has a professional focused squarely on their concerns and risk profile.
  • Broader expertise and scrutiny: Two minds can be invaluable on complex builds or unusual site conditions.
  • Confidence and transparency: Owners often feel more comfortable when “their” surveyor is at the table.

Potential drawbacks:

  • Higher cost exposure: The Building Owner commonly covers both surveyors’ reasonable fees, which can add up if matters are protracted.
  • Possibility of longer timelines: More stakeholders can mean more coordination—though most surveyors keep matters efficient.
  • Disagreements to resolve: If surveyors can’t align, they may refer issues to the Third Surveyor—useful, but it can add time and cost.

How to Decide

Consider:

  • Project complexity: Deep excavations, unusual structures, or tricky access arrangements may benefit from two surveyors.
  • Budget and programme: If speed and cost containment are critical—and trust is high—an Agreed Surveyor can be attractive.
  • Neighbour relations: Where confidence is low or communication is strained, separate surveyors can reduce anxiety and build credibility.
  • Risk tolerance: Ask yourself how comfortable you are relying on a single viewpoint versus a “peer-reviewed” approach.

Practical Tips (Whichever Route You Choose)

  • Start early: Engage a surveyor before notices go out and well before the planned start date.
  • Get the paperwork right: Ensure valid notices, drawings, and method statements are in place.
  • Keep dialogue open: Courteous, documented communication saves time and cost.

Want a neutral view on the best route for your project?

Email team@simplesurvey.co.uk. As the lowest-cost party wall surveyors across England & Wales, Simple Survey gives clear, impartial advice—whether you’re considering an Agreed Surveyor or separate appointments—and delivers compliant Notices and efficient Party Wall Awards.