Construction & Engineering Contract Loss Expert Witness
Construction and engineering disputes turn on precise quantum evidence. Whether the contract is JCT Design & Build, NEC4 Option C, or a FIDIC Red Book international works agreement, the financial consequences of delay, disruption, and variations must be quantified in a form that withstands adjudication, arbitration, and Technology and Construction Court scrutiny. Contract loss expert witnesses in this sector are typically chartered quantity surveyors (MRICS/FRICS) or forensic accountants with deep experience of loss and expense claims, prolongation costs, and global versus particularised claim presentation.
Prolongation arises when a project runs beyond the contractual completion date, site overheads, supervision, plant hire, and preliminaries continue at the contractor's cost. Disruption is distinct: it captures the loss of productivity when works are performed out of sequence, in cramped conditions, or under changed methodologies. Expert witnesses quantify both heads separately, using programme records, cost accounts, and established disruption methodologies. Scott Schedules remain the standard vehicle in TCC proceedings for itemising each claim line, the responding party's position, and the expert's independent assessment.
Infrastructure, civils, M&E, and fit-out disputes share common quantum challenges: establishing entitlement under the contract, linking delay or change events to cost, and addressing concurrent delay and mitigation. Adjudication often requires rapid quantum input within tight timetables; court and arbitration proceedings demand fuller CPR Part 35 reports with transparent assumptions. Sector-matched experts understand how construction accounts, valuations, and payment mechanisms interact with the pleaded case, ensuring the loss figure is both legally recoverable and evidentially robust.
Frequently Asked Questions
What quantum experts are needed for construction disputes?
Construction disputes typically need two types of expert: a delay analyst (programme expert) to establish entitlement to extensions of time, and a quantum expert (usually a chartered quantity surveyor or forensic accountant) to value the financial loss and expense flowing from the delay and disruption. The quantum expert translates the factual and programme position into monetary heads, prolongation, disruption, variations, and loss and expense, and prepares the schedules and expert report required for adjudication, arbitration, or court.
What is a Scott Schedule?
A Scott Schedule is a structured document used in construction litigation to set out each item of claim in a standardised format, listing the item, the amount claimed, the responding party's position, and the expert's view. Courts frequently order Scott Schedules in TCC proceedings to narrow the issues between the parties. Quantum experts populate or respond to Scott Schedules so that the court and the parties can see precisely where quantum agreement and disagreement lie before trial.
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