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Property Expert Witnesses

Disputes around property are stressful, time-consuming, and can become expensive in a heartbeat if they’re not handled properly. That’s why you need a property expert witness with the right technical insight and communication skills to match.

Our team can assess the situation and present the facts clearly, giving you something solid to stand on. You’ll get independent, structured reports that can be used to resolve a range of property and construction-related disputes from Section 20 challenges to building defect claims and beyond.

Need property or architectural expert witnesses you can work with?

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Get Clarity for Complex Issues

Our assessments are built around a full review of all the available documentation, combined with thorough inspection and careful analysis. The end result is that every property expert witness report we produce is impartial, evidence-based, and has your next steps in mind.

Tribunals, courts and solicitors have specific expectations.

We’re used to working within those parameters. If your case proceeds to the First-tier Tribunal, we can provide fully compliant documentation, including Part 35 compliant reports under the Civil Procedure Rules. If you’re still deciding how to proceed, we offer Preliminary Findings reports to help you weigh your options with confidence.

Bringing You Structured, Usable Insights

Everything you get from us is delivered in plain English. If your solicitor has particular formatting or procedural requirements, we’ll work with them directly to get everything in order for a range of disputes, including:

See how our property expert witnesses have helped previous clients.

Read a testimonial

Section 20

Section 20 Major Works charges challenged on fair grounds.

Disputes

Disputes over service charges and leaseholder payment responsibilities.

Claims

Claims involving poor workmanship or negligent building contractors.

Assessed

Structural or material defects identified and independently assessed.

Disagreements

Disagreements over repair obligations and ongoing maintenance duties.

Clarity

Clarity on lease terms affecting building condition responsibilities.

Architecture-Specific Expertise

Some cases call for an architectural expert witness, someone who can assess design work, specification errors, or construction feasibility. Our team includes architectural professionals with a wealth of experience.

They can provide this level of analysis where needed, supporting claims around design failings, non-compliance, or planning disputes. We’ve worked on cases involving residential blocks, conversions, extensions, and refurbishment works, both in historic and modern settings. With BAS, you’re in safe hands.

Trusted by Leaseholders, Developers and Legal Teams Alike

We’ve worked with individual leaseholders through to large property groups, and are proud to have supported multiple clients through difficult moments with reliable, professional reporting. We stay impartial throughout, seeking to assess, explain, and support the process with solid evidence.

Need help clarifying a complex matter? We’re on hand to help.

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