What does a boundary surveyor actually do?

The short answer

A boundary surveyor establishes where the boundary most likely lies by bringing the documents and the ground together. That means inspecting the site, taking measurements, interpreting the deeds, conveyance plans and historic records against the physical features, and setting out conclusions in a clear report. Crucially, a competent boundary surveyor assesses the evidence objectively and tells you what it actually shows — including where it is weak — rather than simply arguing for whoever is paying. That objectivity is what makes the opinion genuinely useful, both in negotiation and, if it comes to it, in court.

Why it matters

The work involves a site inspection and measured survey, careful analysis of the original conveyance and later documents, the application of established presumptions (such as hedge and ditch), and a reasoned, written opinion on the most likely line. For private boundary work, the surveyor assesses the evidence impartially. A privately appointed joint expert gives a binding determination only where the parties agree that effect under suitable written terms. A court expert instead owes an overriding duty to the court under CPR Part 35; the judge decides the case. That is very different from an advocate: a boundary surveyor’s value comes precisely from not simply telling you what you want to hear.

It matters because boundary disputes are evidence disputes, and both neighbours can usually muster evidence that looks persuasive. An objective expert — ideally a single one acting for both sides — is what cuts through that, narrowing the genuine area of disagreement and keeping costs down.

What to do now

• Instruct a surveyor who will give you an objective view, not just back your position.
• Consider a single joint expert with your neighbour — one impartial opinion is cheaper and less adversarial than two.
• Provide all your documents, especially the original conveyance.

Common mistakes

• Expecting a surveyor simply to support your view.
• Failing to provide the original conveyance and historic documents.
• Instructing two opposing experts where a single joint expert would do.

When to call Coburns

We act as objective boundary surveyors — including as a single joint expert — assessing the evidence impartially so the real position is clear before positions harden.