John Delaney

John Delaney is a Chartered Quantity Surveyor with over 20 years of commercial experience across the construction and engineering industries. He has acted a quantum expert, and as assistant to the named expert, on numerous occasions.

John has been appointed as quantum expert in respect of matters before the High Court in Ireland, the County Court in the UK, an arbitration, mediations, and in respect of numerous matters under statutory adjudication. He is regularly appointed to provide opinion as to quantum in respect of professional negligence claims made against construction design team members.

In the course of his career, John has acted as a consultant on multi-million-pound disputes, arbitrations and adjudications and provided claim preparation and management services on a number of projects under both standard and bespoke contracts in Europe, the Middle East, Asia and Australia. He has a successful track record preparing detailed reports and meeting client demands.

John specialises in cost and commercial management, expert witness and dispute resolution services. He supports clients across a broad range of sectors including construction, civil engineering and gas pipelines. He has also prepared independent reports for valuation of variations accounts, claims for loss and expense, claims for defective work repairs, supporting narrative to extension of time applications, assessment of submitted final account claims and commercial strategies for negotiation and settlement of interim and final accounts.

John holds qualifications in construction law, international arbitration, construction adjudication and expert evidence. He authored the Irish chapter of The Construction Disputes Law Review 1st Edition (2022) and 2^nd Edition (2023) and has been recognised by Who’s Who Legal as a construction expert since 2018 and as an arbitration expert witness.