James Dunphy

Background

About James Dunphy

I’m a Chartered Quantity Surveyor and Quantum Expert with over 25 years of experience delivering cost and claims advice across major infrastructure and building projects. I hold a degree in Quantity Surveying and a Master’s in Construction Law, and have worked on complex matters across Australia, the United Kingdom, Ireland, Canada, Japan, the United Arab Emirates, Saudi Arabia, and Nigeria.My career spans both contractor and consultant roles, with a focus on cost estimating, commercial management, forensic analysis, and expert opinion. I’ve advised on roads, rail, mining, wind farms, waste-to-energy facilities, courthouses, high-rise towers, police HQs, hospitals, ports, education and infrastructure.I’ve authored over 30 independent expert quantum reports and regularly provide opinion in dispute contexts ranging from mediation and arbitration to formal hearings such as VCAT. I’m also frequently engaged to provide independent cost advice on high-value projects, including $11bn infrastructure and energy programs.Clients and legal teams value my clarity, commercial understanding, and ability to translate complex issues into clear, defensible advice whether mid-project or deep into dispute resolution.