CONSTRUCTION EXPERT WITNESS

Construction Expert Witness Services

Independent expert opinion on construction disputes involving quantum, delay, disruption and allegations of quantity surveying professional negligence.

Expert reports for adjudication, arbitration and litigation.

LLM

Construction Law
and Arbitration

Expert appointments

Adjudication, arbitration
and litigation

CPR Part 35

Litigation expert evidence

30+ years

Construction industry
experience
Expert Appointments

Selected Experts

ICRS matches each proposed expert appointment to the issues in dispute and the field of expertise required. The profiles below set out each expert's qualifications, field of expertise and relevant appointment experience.

  • Matthew Greenhalgh, Quantum Expert and Quantity Surveying Expert Witness at ICRS Consult

    Matthew Greenhalgh

    Quantum Expert and Quantity Surveying Expert Witness

    BSc (Hons), LLM, MRICS, MCIArb

    Appointed as a quantum expert in arbitration, litigation and adjudication. Expert witness experience in quantity surveying professional negligence litigation.

    • More than 30 years of construction industry experience
    • Chartered Quantity Surveyor
    • LLM Construction Law and Arbitration
    • Advanced Professional Award in Expert Witness Evidence
    • JCT, NEC, FIDIC and bespoke contract experience
    View Expert Profile
  • Lee Hudson, Delay and Disruption Expert at ICRS Consult

    Lee Hudson

    Delay and Disruption Expert

    MSc, MCIOB, ACIArb

    Appointed as a delay expert in adjudication and litigation, with extensive planning, programming and forensic delay analysis experience.

    • More than 39 years of construction industry experience
    • 26 years specialising in project management, planning and programming
    • MSc Construction Law
    • Member of the Chartered Institute of Building
    • JCT, NEC, FIDIC, ICE and GC Works experience
    View Expert Profile
EXPERT WITNESS DUTIES

Independent Opinion Within the Expert's Field of Expertise

When acting as an expert witness, the expert provides independent and impartial opinion within their field of expertise and does not act as an advocate for the instructing party.

Before accepting an expert appointment, ICRS considers the expert's relevant expertise and experience, ability to act independently and impartially, any actual or potential conflict of interest, availability and the required timetable.

Where CPR Part 35 applies, the expert's duty is to help the court on matters within their expertise, and that duty overrides any obligation to the person instructing or paying them. The expert report must comply with CPR Part 35 and Practice Direction 35.

For adjudication and arbitration, the appointment and expert evidence are prepared to meet the applicable procedural requirements and directions.

EXPERT APPOINTMENT

Defining the Scope of the Expert Appointment

Before accepting an appointment, ICRS considers the issues on which expert opinion is required, the relevant field of expertise, the proceedings, the required timetable and the material available.

ICRS considers whether the proposed expert has the appropriate expertise and experience, can act independently and impartially, has sufficient availability and whether any actual or potential conflict of interest arises.

The scope of the appointment identifies the issues to be addressed, the material to be considered, the required form of expert evidence and the applicable timetable.

Scope and Appointment Considerations

Before Accepting Instructions

The initial review considers:

  • The issues on which expert opinion is required
  • The field of expertise required
  • The proceedings and applicable procedural requirements
  • The timetable and required form of expert evidence
  • The material records and other evidence available
  • The expert's relevant experience, competence and availability
  • Any actual or potential conflict of interest or other matter affecting independence or impartiality
Construction Expert Witness Services

Construction Expert Witness Disciplines

  1. Quantum Expert Witness

    Independent Opinion on Disputed Quantum

    Independent expert opinion on disputed quantum issues involving valuation, variations, payment, final account sums, loss and expense, retention, damages, deductions and related financial matters.

    THE EXPERT REPORT MAY ADDRESS

    • The disputed valuation or financial issue
    • The sums claimed, disputed or assessed
    • The valuation, cost or damages methodology
    • The records and substantiation relied upon
    • Variation, change or final account sums
    • Payment, retention or deduction issues
    • Loss and expense or prolongation cost issues
    • Damages, set offs or contra charges
    • Cost causation and calculation issues
  2. Delay Expert Witness

    Independent Opinion on Delay and Programme Effects

    Independent expert opinion on disputed delay issues involving delay events, causation, programme impact, critical path, periods of delay, concurrency and time related matters.

    THE EXPERT REPORT MAY ADDRESS

    • The delay events relied upon
    • The alleged causes of delay
    • The baseline, updated and as built programmes
    • The factual chronology and actual progress
    • Critical path and concurrency issues
    • The delay analysis methodology
    • The period of delay assessed
    • Time related issues for EOT or delay claims
    • The delay records relied upon
  3. Disruption Expert Witness

    Independent Opinion on Disruption and Productivity

    Independent expert opinion on disputed disruption issues involving productivity loss, inefficient working, access constraints, sequencing, labour or resource impact and disrupted progress.

    THE EXPERT REPORT MAY ADDRESS

    • The disruptive events relied upon
    • The alleged effect on productivity
    • Inefficient working or loss of productivity
    • Labour, plant or resource impact
    • Access, sequencing or workface constraints
    • The disruption methodology
    • Site records and productivity evidence
    • The link between events and claimed loss
    • Alternative causes or unaffected work
    • Non compensable factors
  4. Quantity Surveying Professional Negligence

    Independent Opinion on Quantity Surveying Practice

    Independent expert opinion on the standard of quantity surveying practice in professional negligence disputes, including valuation, certification, payment assessment, final account administration and related professional practice issues.

    THE EXPERT REPORT MAY ADDRESS

    • Professional role and appointment
    • Scope of services
    • Quantity surveying practice
    • Valuation and assessment
    • Certification
    • Payment administration
    • Final account administration
    • Contract administration
    • Alleged acts or omissions within the expert’s discipline
Selected matters

Case Studies

These matters are examples of ICRS appointments in this area. Each case summarises the issue, ICRS's involvement, the work delivered and the outcome.

Case study

Quantum Expert Report for a Civil Engineering Subcontractor

Quantum expert report supports a £416,000 adjudication recovery for a civil engineering subcontractor.

Client
Civil engineering subcontractor
Issue
The payment dispute concerned delay-related costs and disruption-related losses.
Case study

Quantum Expert Report for an M&E Subcontractor

Quantum expert report supports a £305,000 adjudication recovery for an M&E subcontractor.

Client
M&E subcontractor
Issue
The dispute concerned valuation, variations, deductions and payment entitlement.
Case study

Delay and Disruption Expert Report for a Joinery Subcontractor

Delay and disruption expert report supports a £195,000 adjudication recovery for a joinery subcontractor.

Client
Joinery subcontractor
Issue
The subcontractor experienced delay, disrupted access, inefficient working and productivity loss.
EXPERT WITNESS FAQS

Questions Before You Instruct an Expert

Expert duties and procedural requirements depend on the proceedings and applicable rules. Each appointment is scoped accordingly.

Discuss an expert appointment

Speak to ICRS about the disputed issues, the required expert discipline and the available evidence.

The initial discussion is free of charge.

Expert Witness Services

Send Us Your Details

Name, email and a few lines about the issue is enough to start. We will come back to you within 24 hours.