John Delaney


Arbitration 2023
Construction 2023
Consulting 2022
Expert Information
Qualifications BSc (Hons), Surveying
Diploma (Hons), Construction Economics and Management
Post Grad Diploma (Hons), Construction Law and Contract Administration
Diploma International Arbitration
Diploma Construction Adjudication
Professional Memberships FRICS, MSCSI, FCIArb, AMAE, SCL
Contract Experience FIDIC, NEC, RIAI, JCT, PWC
Services Quantum
Sectors Power & Utilities, Resources, Technology, Buildings, Transportation Infrastructure, Industrial & Manufacturing
Expert Highlights
  • Chartered Quantity Surveyor with hands-on project experience.
  • Delivers clear, accurate and relevant evidence for dispute decision makers.
  • Varied buildings, transportation and energy experience.
  • Regularly appointed as quantum expert in professional negligence matters.
  • Acted as expert assistant in disputes in excess of £100 million.
  • Experience of both on and offshore pipelines.
  • Recognised by WWL as an arbitration and construction expert.

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’s communication skills, both written and oral are excellent. He is methodical and his reports are presented in a clear and concise manner. He uses his expertise and years of experience to hone in on the real issues.

WWL Construction Expert Witnesses 2023

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 2nd Edition (2023) and has been recognised by Who’s Who Legal as a construction expert since 2018 and as an arbitration expert witness.

Mr Delaney is a true expert in quantity surveying matters. He is a focused, practical and responsive expert. He gets to the heart of complex matters promptly and can explain it simple terms.

Contact John
Location Dublin, Ireland, London, UK

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