Seamus O'Doherty

Seamus O’Doherty is a Chartered Quantity Surveyor, Chartered Builder, adjudicator, arbitrator, and accredited mediator with over 30 years of experience in commercial and project management. He has worked for engineering and construction companies, consultancies, and client organisations across the UK, Ireland, Europe, North America, the Middle East, and Asia, providing cost, procurement, and contract advice on projects spanning commercial, residential, civil, health, industrial, oil and gas, power, and major infrastructure sectors, including bridges, airports, and rail developments.

Seamus has extensive experience with both standard and bespoke contract forms, including NEC, JCT, ICE, and FIDIC, and has advised on claims, strategy, negotiation, and dispute avoidance. He specialises in contract and claim analysis, quantum and delay assessment, and has been regularly appointed as a quantum expert in construction and engineering disputes.

He is a panel member of several leading dispute resolution bodies, including the RICS President’s Panel of Construction Adjudicators, UK Adjudicators, CIC Low Value Disputes Scheme, CIArb Business Arbitration Scheme, and acts as a CEDR ADR Official. He also serves as Honorary Treasurer of the CIArb London Branch, a RICS APC Chairperson and Assessor, and a Liveryman of The Worshipful Company of Arbitrators.

Seamus joined the Ecsper Advisory Board in October 2025, bringing over three decades of global expertise in construction law, dispute resolution, and quantum analysis to support Ecsper’s mission.