SJA was founded in 1999 and is a leading project advisory and delivery firm that has completed more than 2000 projects in Australia and overseas. The business has offices in Sydney, Melbourne, Brisbane and Perth in Australia, as well as in New Zealand, Hong Kong and the UK.


It is focused on providing key services to the construction industry and specialises in expert and advisory services, planning and programming, project management and quantity surveying. It has worked in almost every sector: its projects range from facilities and renewable energy farms to high-end residential and infrastructure schemes.

SJA is a leading provider of independent expert services, specialising in the provision of construction-related expert witness services for owners, contractors, subcontractors and law firms for the purposes of litigation, arbitration, adjudication and mediation proceedings across all construction- and infrastructure-related sectors. It can assist in the resolution of construction-related disputes, delivering detailed analysis and written and oral evidence to support clients with accurate, unbiased opinions and enabling them to objectively assess their position and ultimately achieve optimum results and outcomes.

The advisory services team supports clients in the formation and delivery of effective solutions to add value to the outcome of their projects and through all phases. A significant offering within the advisory services division is its expert witness service, providing expert evidence in the fields of delay, disruption, cost, quantum, construction methodology, project management and construction defects. Other advisory services include contract administration, insolvency, procurement and risk management.

Planning and programming is another key service, offering a solution-based focus that works within a wider project team. These services can include programme and delivery methodologies, project monitoring and reporting, delay analysis and claim management, troubleshooting and independent opinions and programme and software user training.

SJA’s quantity surveying team provides diligent support in cost planning, estimation, dispute preparation and reporting to public and private sector clients. This includes a wide range of allied services consistent with the maturing requirements of the industry, such as asset replacement valuation, cost planning and estimating, feasibility cost study, depreciation assessment, pre and post contract services and tender management.

Some of SJA’s clients include Fletcher Building, Probuild, Watpac, Neoen and Piety THP.

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