What is Expert Determination?
Expert determination is a type of alternative dispute resolution (ADR), and involves an independent expert being appointed to decide a specific technical issue, using their professional expertise rather than a formal legal process. In property disputes, that expert is often a chartered surveyor, particularly when the disagreement is about:
• Valuation.
• Rent reviews.
• Service charge appointments.
• Floor areas or measurements.
• Dilapidations.
• Construction quality or defects.
The process for this is intentionally informal. There are usually nor hearings, no cross-examination and limited written submissions. The expert can review documents, carry out inspections and ask questions as needed before making their decision.
The RICS lays out clear, professional standards for surveyors who are acting as independent experts. These standards emphasise impartiality, transparency and technical competence. They’re quite technically written, but the key points homeowners and property professionals should understand are that:
• The expert’s decision is usually final and binding.
• There are very limited grounds to challenge it.
• The outcome focuses on technical correctness, not legal argument.
• The process is private and confidential.
Because it’s so simple, expert determination is often faster and less expensive than other dispute routes, making it a popular option for disputes where the core issue is technical rather than legal.
What is Arbitration?
Arbitration on the other hand, is a more formal process, often described as a private alternative to court proceedings. Instead of a judge, the dispute is decided by an arbitrator, sometimes a legally trained professional or sometimes a specialist like a chartered surveyor, depending in the agreement between the parties. Arbitration in England and Wales is governed by the Arbitration Act 1996, which provides a clear, legal framework for how arbitrations are conducted and how awards are enforced. This process looks more like litigation than expert determination, and goes something like this:
• Each party submits formal written evidence.
• Legal arguments are considered.
• Hearings may take place.
• Witness and experts can be questioned.
Arbitration awards are legally binding, directly enforceable through the courts, and they are very difficult to appeal except on narrow legal grounds. For property disputes, arbitration is most commonly used for:
• Complex landlord and tenant disputes.
• Lease interpretation disagreements.
• Construction and development disputes.
• Multi-issue cases involving both fact and law.
While arbitration is usually quicker and more flexible than court, its still a structured legal process, and shouldn’t be viewed as a ‘light touch’ approach.
The Key Differences
Although both routes avoid the public courts systems, expert determination and arbitration do serve different purposes. Simply put, expert determination is:
• Technical.
• Inquisitorial.
• Efficient.
• Narrow in scope.
Arbitration by contrast is:
• Legal and procedural.
• More formal.
• Broader in scope.
From a cost perspective, expert determination is usually significantly cheaper since there are fewer procedural steps and less legal involvement. Arbitration costs are higher, especially where solicitors, counsel and hearings are required. In terms of speed, expert determination can often be concluded in weeks or months, while arbitration can take multiple months or longer depending on how complex the dispute is.
One of the biggest differences is enforcement. Arbitration awards are explicitly recognised and enforceable under statute. Expert determinations are contractually binding, but if one party refuses to comply, court action might still be needed to enforce the decision.
Which is Best for Your Property Dispute?
There really is no one-size-fits-all answer to this question, but thankfully there is a logical way to decide.
Expert determination is often the better option if:
• The dispute is purely technical.
• Both parties accept the need for specialist expertise.
• Speed and cost control are priorities.
• Maintaining a working relationship matters.
Typical examples include rent review valuations, service charge calculations or disputes over measured areas.
Arbitration is usually more appropriate where:
• Legal interpretation is central to the dispute.
• There are multiple complex issues.
• One party may resist compliance.
• A strong, enforceable outcome is needed.
This is why chartered surveyors are often involved in both processes, either as independent experts or as arbitrators, bringing property specific knowledge that courts often lack. From a surveying perspective, the most important step is deciding early. Choosing the wrong route can increase costs, delay resolutions and harden positions unnecessarily.
Property disputes don’t need to be more painful than they are already are. Expert determination and arbitration both offer effective alternative to court, but they serve different types of disputes. Understanding those differences, and taking professional advice early, can save you significant time, money and stress. If you’re facing a property dispute and aren’t sure which route is right for you, speaking to a chartered surveyor who has dispute resolution experience is often the best place to start. All you need to do is get in touch with the team from Harrison Clarke today.
For more expert advice on surveying and property matters, check out our range of informative videos on our website or YouTube channel. Harrison Clarke Chartered Surveyors is here to guide you every step of the way!
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