Expert Witness Surveyors
RICS chartered expert witness surveyors for property disputes across England & Wales. CPR Part 35-compliant reports, Single Joint Expert appointments and court testimony.
RICS Expert Witness Building Surveyors — CPR Part 35 Compliant
Survey Merchant provides RICS chartered surveyors as expert witnesses for property disputes, litigation and court proceedings across England and Wales. Every expert witness report is prepared to the standard required by Part 35 of the Civil Procedure Rules (CPR Part 35) and the RICS practice statement Surveyors Acting as Expert Witnesses — with the expert's overriding duty owed to the court, not to the instructing party. Whether you need an expert witness building surveyor for a defect claim or an RICS Registered Valuer for a contested figure, instructing an RICS expert witness through the panel means the discipline, the locality and the court experience are matched to the dispute.
Property disputes the panel's experts act in
- Building defect disputes — defective workmanship, structural failure, damp and timber issues, subsidence, roofing and extension defects, and claims arising from renovation or construction projects — see our construction expert witness service.
- Party wall disputes — damage claims under the Party Wall etc. Act 1996, section 10 disputes, award challenges and third surveyor referrals — see our party wall expert witness service.
- Boundary disputes — disputed walls and fences, encroachment, and expert evidence on boundary features and title plans — see our boundary dispute expert witness service.
- Valuation disputes — negligent valuation claims, matrimonial and probate valuations for court, and leasehold and enfranchisement tribunal work — see our valuation expert witness service.
- Professional negligence — claims against surveyors, valuers and other property professionals — see our surveyor negligence expert witness service.
- Landlord & tenant — dilapidations claims, housing disrepair and schedule of condition evidence.
If you are not sure which discipline your dispute needs, tell us what is being argued about and we match the building expert witness — or Registered Valuer — to the issues in the case.
Who instructs the panel's expert witness surveyors?
Most instructions come from solicitors and barristers acting in property litigation, but the panel's experts are also instructed by insurers and legal expenses providers, freeholders, managing agents and management companies, landlords and housing associations, contractors and developers, and homeowners — including litigants in person, for whom we recommend an early advice report before committing to proceedings. Whoever pays the fee, the position under CPR Part 35 is identical: the expert's duty is owed to the court. That independence is not a limitation — it is what makes the evidence worth paying for, because a report the judge trusts is what settles cases.
Single Joint Expert or party-appointed
Instructions are accepted in both forms recognised by the courts:
- Single Joint Expert (SJE) — appointed jointly by both parties to provide one impartial report, the approach the courts increasingly prefer for proportionate disputes.
- Party-appointed expert witness — instructed by one side in adversarial proceedings, prepared to give oral evidence and be cross-examined in court or tribunal.
Our surveyors also support Alternative Dispute Resolution — arbitration, adjudication, early neutral evaluation and mediation — where a robust expert report frequently settles matters before trial. Evidence is prepared for the settings property disputes actually reach: the County Court, the Technology and Construction Court (TCC), and the First-tier Tribunal (Property Chamber) for leasehold and enfranchisement matters.
How to choose a building surveyor as your expert witness
The court is not interested in advocacy from an expert — it is interested in independent, evidenced opinion. That is why the first test of any expert witness surveyor is not their postcode but their duty: under CPR Part 35 the expert's duty is to the court, above the party paying them. When you instruct through Survey Merchant, every report carries the expert's declaration and statement of truth, sets out the surveyor's qualifications and inspection evidence, and separates fact from opinion the way judges expect. The second test is relevance: a building surveyor expert witness for a defect claim, a Registered Valuer for a valuation dispute, a party wall specialist for a section 10 matter. Because we operate a national panel of 2,400+ RICS surveyors, we match the discipline to the dispute rather than forcing one CV to fit every case.
What does a CPR Part 35 expert witness report contain?
A compliant expert witness report follows a structure the courts expect: the expert's qualifications and experience; a summary of the instructions and the questions the expert has been asked to answer; the facts and assumptions the opinion rests on, kept strictly separate from the opinion itself; the site inspection evidence, with photographic schedules and analysis; where there is a range of professional opinion, that range and the reasons for the expert's own position within it; and the expert's declaration and statement of truth required by Practice Direction 35.
The report is rarely the end of the job. The panel's experts answer written Part 35 questions from the other side, meet the opposing expert to produce a joint statement narrowing the issues in dispute, and attend court to give oral evidence where required.
Fees and timescales
Fees are quoted fixed or hourly depending on the complexity of the matter, with typical reporting timescales of 2–4 weeks from inspection. The panel's experts are used to working to court directions and tight tribunal deadlines.
Where we provide expert witness surveyors
Instructions are accepted across England and Wales, with dedicated coverage pages for London, Leeds, Guildford and Surrey, and specialist construction expert witness services for workmanship and defect claims. Through a national panel of 2,400+ RICS surveyors, coverage extends to Manchester, Birmingham, Bristol and throughout the UK — and we can usually offer a local expert with direct knowledge of the area's building stock. Reports are typically delivered within 2–4 weeks of inspection; urgent directions deadlines can usually be accommodated — tell us the court timetable and we will confirm before you instruct.
A comprehensive set of services
Frequently asked questions
How does an expert witness assist me?
They can establish the facts in an unbiased and fair manner, whilst communicating them accurately in order to reach a fair and amicable settlement or help defend your case in court. They may also be aware of the legal aspects surrounding the nature of your situation and help you save money by avoiding lengthy court proceedings or ensuring that you have a higher probability of success and can recover your costs if you win.
What level of work does an expert witness cover?
It could be building contracts, lease renewals or disputes in general. Our panel of expert witnesses have experience in both County Court and High Court in respect of a number of surveying-related services. These include:
- Building surveying
- Valuation
- Party walls
- Boundary Disputes
- Professional negligence
- Leasehold enfranchisement
- Landlord & Tenant
- Dilapidations and disrepair
- Commercial property
- Construction claims
What does an expert witness surveyor do?
An expert witness surveyor provides independent technical evidence to courts and tribunals — inspecting the property, analysing the issues and producing a CPR Part 35-compliant report with the expert's declaration. Their overriding duty is to the court, not the party paying them.
How much does an expert witness surveyor cost?
Fees are quoted fixed or hourly depending on the dispute's complexity and the volume of documents. Request a CV and fee quote and we will confirm costs before you instruct.
What is a Single Joint Expert?
A Single Joint Expert (SJE) is appointed jointly by both parties to a dispute and produces one impartial report both sides rely on — the approach courts increasingly prefer for proportionate claims. SJE and party appointments are accepted alike.
Who pays for a Single Joint Expert?
The cost of a Single Joint Expert is usually shared equally between the parties, unless the court directs a different split. Fees, the scope of instructions and payment terms are agreed by both sides before the expert is instructed, so each party knows its share in advance. The court may later reallocate expert costs as part of the overall costs order in the case.
Can the same surveyor act for both parties in a dispute?
Yes, but only as a Single Joint Expert appointed under a joint instruction agreed by both parties, typically with the court's approval. Outside an SJE appointment, each party instructs its own expert and the two reports are exchanged. Either way, an expert witness's overriding duty under CPR Part 35 is to the court, not to the party paying the fee — the evidence must be independent and impartial.