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Expert Witness

Expert Witness Services for the Built Environment.

Expert Witness Services for Construction & Property Disputes

Construction and property disputes can be complex and costly. At OMNIA Building Consultancy, we deliver professional, impartial Expert Witness reports to support dispute resolution, litigation, mediation, and insurance claims across the construction and property sectors. Our detailed assessments and credible expert opinions help legal teams, insurers, contractors, and private clients make informed decisions with confidence.

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Whether you require support in court, arbitration, or an early-stage professional opinion, our expert witness service ensures technical clarity, procedural accuracy, and credibility - every time.

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Our Expert Witness Services Include:

Expert Reports (CPR 35 Compliant)

We produce legally compliant expert witness reports in line with Part 35 of the Civil Procedure Rules, providing clear, evidence-based opinions that support the court’s understanding of complex technical issues.

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Single Joint Expert (SJE) Reports

OMNIA acts as a Single Joint Expert where required, producing neutral, independent advice accepted by both parties in litigation or court proceedings.

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Pre-Litigation Advice & Advisory Reports

We support clients in the early stages of a dispute, offering technical assessments and advisory reports to help inform decisions and potential settlement negotiations.

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Construction & Building Defect Analysis

From structural failures and poor workmanship to damp, fire damage or roofing issues, our experts investigate and explain root causes with technical clarity.

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Expert Testimony & Court Attendance

Where necessary, OMNIA’s experts are available to attend court proceedings, arbitrations or tribunals to deliver verbal evidence and support cross-examinations.

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Insurance & Dilapidation Disputes

We assist with claims related to dilapidations, reinstatement valuations, latent defects, and insurance disputes, providing evidence to support claims or defences.

Why Choose OMNIA as Your Construction Expert Witness?

  • RICS-Accredited Building Surveyors & Experts​

  • Our experts have over 25 Years of Construction Consultancy Experience​

  • Compliant with CPR 35, Civil Procedure Rules & Practice Directions​

  • Independent, Objective & Legally Robust Reports​

  • Court Appearance, Mediation & Arbitration Support

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We are experienced in preparing and delivering reports for all types of disputes - from residential defects to large-scale commercial construction failures.

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UK-Wide Expert Witness Coverage

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OMNIA provides expert witness services across the UK, including England, Wales, and Scotland. Our consultants are experienced in working within regional court systems and understand the unique challenges faced in both urban and rural environments.

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Credible. Clear. Court-Ready.

OMNIA's experts strengthen your case with trusted technical evidence.

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Types of Disputes we Support

We provide expert witness services for a wide range of property and construction-related disputes, including:
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  • Construction defects & latent defects​

  • Building contract disputes​

  • Professional negligence (e.g. architects, surveyors, contractors)​

  • Landlord vs tenant claims (dilapidations, repairs)​

  • Party wall and boundary disputes​

  • Water ingress, damp & condensation claims​

  • Roofing, building & non-compliance issues​

  • Planning & building regulation compliance matters​

  • Disputes over workmanship and construction methods​

  • Valuation & reinstatement cost discrepancies

Specialist Areas

  • Roofing (all types)​

  • Windows​

  • Walls​

  • Building Envelope specifications​

  • Building Envelope installations​

  • Insulation​

  • Waterproofing​

  • Design suitability​

  • Roof Gardens​

  • Green Roofs

Who we Work With

We are trusted by legal professionals, insurance providers, developers, property managers and private clients.

Typical clients include:
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  • Solicitors & law firms

  • Barristers & litigation teams

  • Insurance companies & loss adjusters

  • Developers & landlords

  • Housing associations & local authorities

  • Surveyors, architects & other construction professionals

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Why Independent Expert Evidence Matters

In legal proceedings or formal disputes, expert evidence can be the deciding factor. Courts and tribunals rely on credible, independent opinions from professionals with proven expertise and impartiality. Our experts understand the duty to the court and are trained to present facts and conclusions clearly and objectively.

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At OMNIA, we take this responsibility seriously - ensuring our expert reports are:

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  • Based on detailed site inspections and documentary analysis

  • Written in plain English with technical accuracy

  • Aligned with all relevant legislation and professional standards

  • Reviewed for completeness, fairness, and impartiality

  • Delivered on time and within scope

How our Expert Witness Process Works

  1. Initial Consultation – We review your case requirements and advise on scope, timelines and fees.
     

  2. Instruction & Engagement – We formalise the appointment in line with CPR or tribunal procedures.
     

  3. Inspection & Analysis – Site visits, desktop research, and evidence gathering are undertaken.
     

  4. Report Production – We produce a comprehensive expert report, compliant with relevant rules.
     

  5. Further Support – If required, we provide supplementary reports, responses to other experts, and court attendance.

Gavel hammer in the middle of construction tools
Facts matter. So does your expert.

Need a reliable, qualified Expert Witness for a construction or property dispute? OMNIA’s trusted specialists are ready to support your legal or dispute resolution process with integrity and technical expertise. When disputes arise, facts matter. Trust OMNIA’s expert witness services to deliver the clarity and credibility your case demands.

Expert Witness FAQs

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