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Expert Profile

Graham Topp

Graham Topp

Quantum Expert

BSc Quantity Surveying
MSc Construction Law and Dispute Resolution
Australian Standard Contracts
Oil & Gas
Process & Industrial
Asia Pacific
Middle East
United Kingdom


  • Chartered Quantity Surveyor
  • Over 15 years of construction industry experience
  • Specialises in quantification of delay, disruption and additional work claims
  • Extensive knowledge of construction costs
  • More than 20 expert appointments


Graham is a Chartered Quantity Surveyor with the Royal Institution of Chartered Surveyors and a certified Quantity Surveyor with the Australian Institute of Quantity Surveyors. His areas of expertise include the quantification of delay, disruption and additional work claims. He has strong forensic analysis skills and is absolute in his management of process and procedure.

Graham’s extensive knowledge of construction costs, coupled with a detailed understanding of construction law principles, has provided a basis for more than 30 quantum expert appointments. He has prepared joint reports and has given expert evidence.

Graham holds a comprehensive knowledge of contractual relationships and valuation mechanisms, gained from working on live projects in the infrastructure,petrochemical, mining and power industries. These projects have ranged from capital maintenance schemes to multibillion-dollar pit-to-port mining projects.

Graham mainly operates from Brisbane, Australia. He is regularly appointed to quantum matters throughout the Asia-Pacific region, including disputes determined in international arbitration, supreme court litigation, domestic arbitration, adjudication and other similar forms of dispute resolution. Graham is a member of the Chartered Institute of Arbitrators. He holds a BSc in quantity surveying and a masters degree in construction law.

This expert has recently been instructed by:

  • DLA Piper
  • Hesketh Henry
  • HWL Ebsworth
  • Mahoneys
  • Minter Ellison