Expert Witness Services
Expert Services International can provide expert witness services across all Australian states and territories, from the Federal Court and state supreme courts to arbitration, adjudication and tribunal proceedings.
Australian Expert Witness Practice
Expert Services International can provide expert witness services across all Australian states and territories. Expert evidence in Australian courts and tribunals is governed by the Federal Court General Practice Note (GPN-EXPT), the Harmonised Expert Witness Code of Conduct 2015 and equivalent state and territory provisions. These frameworks impose a paramount duty on expert witnesses to assist the court, and establish requirements for the form, content and presentation of expert reports.
The principal forums for construction and infrastructure disputes include the Federal Court of Australia, state supreme courts, specialist tribunals such as NCAT and VCAT, and arbitration under the rules of ACICA, the Resolution Institute and the Chartered Institute of Arbitrators. Security of payment adjudication is available under legislation enacted in each state and territory.
Australia is a common law jurisdiction. Party-appointed expert witnesses are well established in both litigation and arbitration, with experts owing a paramount duty to the court or tribunal. Expert evidence is governed by the Federal Court General Practice Note (GPN-EXPT) and the Harmonised Expert Witness Code of Conduct, with equivalent provisions in each state and territory.
Federal Court Framework
The Federal Court of Australia exercises jurisdiction over construction and infrastructure disputes of national significance, as well as disputes arising from the failure of state-based mechanisms. Expert evidence in the Federal Court is governed primarily by the Federal Court of Australia Rules 2011 and the Expert Evidence Practice Note General (GPN-EXPT), which was issued in 2016 and remains current as the principal guidance for expert practitioners.
Unlike some other jurisdictions, the Federal Court does not impose a mandatory requirement that experts obtain formal permission before providing expert evidence, although the court retains broad discretion to limit the number of experts and to direct alternative procedures such as single joint expert arrangements. The foundational requirement is that every expert must acknowledge their overriding duty to the Court, a principle that transcends any loyalty to the instructing party or client. This acknowledgment must be made expressly in the expert report and typically by statement of truth. The court places particular emphasis on the expert's independence and impartiality, requiring clear disclosure of any matters that might reasonably be perceived as affecting the expert's objectivity.
The Federal Court has consistently emphasised that expert evidence should be truly expert in nature, addressing matters within the expert's genuine field of expertise and not straying into commentary on legal issues or disputed facts that do not require specialist knowledge. The court retains the right to appoint its own expert where it considers this necessary, and parties are increasingly encouraged to agree upon single joint experts for technical matters, a practice that promotes cost-effectiveness and reduces the risk of polarised expert evidence.
Professional Standards
The Harmonised Expert Witness Code of Conduct 2015 represents a significant achievement in promoting consistency across Australian jurisdictions. The code was endorsed by the Council of Chief Justices Australia and New Zealand on 21 October 2015 and has been formally adopted by New South Wales, Victoria, Tasmania and the Australian Capital Territory. The harmonised approach reflects recognition that expert witnesses increasingly operate across multiple Australian jurisdictions, and consistency in fundamental principles promotes both the administration of justice and the practical ability of experts to serve the profession effectively.
The code establishes that an expert's duty to the court or tribunal fundamentally overrides any obligation to the instructing party or payer. This primacy of the expert's duty to the administration of justice is non-negotiable and distinguishes expert evidence from ordinary partisan evidence. An expert must maintain complete independence and impartiality at all times, avoiding any situation that might compromise or be perceived to compromise their objectivity. The code requires experts to maintain a clear distinction between facts within their own knowledge and the opinions they express, ensuring that the factual foundation for expert opinion is transparent and can be tested.
All experts must explicitly acknowledge their duties under the applicable code, must declare any conflicts of interest or potential bias, and must understand that they are answerable to the court or tribunal. The code applies before the expert gives evidence and requires acknowledgment as a precondition to admissibility. For those jurisdictions that have not formally adopted the harmonised code, including Queensland, Western Australia and South Australia, substantially equivalent principles apply through jurisdiction-specific court rules and practice directions, ensuring that core principles of independence and duty remain consistent across all Australian forums.
State Supreme Courts
Whilst the Federal Court provides an important forum, the majority of construction and infrastructure disputes are litigated in state supreme courts and state-based tribunals. Each state and territory maintains its own procedural rules and practice directions governing expert evidence, requiring expert practitioners to maintain detailed knowledge of the requirements applicable in each jurisdiction.
New South Wales, the largest commercial jurisdiction in Australia and home to significant construction and infrastructure disputes, governs expert evidence primarily through Part 31 of the Uniform Civil Procedure Rules 2005. Expert evidence in NSW is also subject to the requirements contained in the Land and Environment Court Practice Note and specific requirements of the District Court and Supreme Court. A significant development in 2025 has been the implementation of amendments restricting the use of generative artificial intelligence in the preparation of expert reports and witness statements. The Land and Environment Court now requires clear evidence of authorship without artificial intelligence assistance, reflecting growing concern about the authenticity and reliability of expert evidence prepared with AI tools.
Victoria maintains expert evidence rules through its Supreme Court General Civil Procedure Rules and County Court Rules, with recent updates to these rules effective from September 2025. The Victorian Court of Appeal and Supreme Court have also emphasised the importance of the harmonised code compliance, and VCAT, the Victorian Civil and Administrative Tribunal, has developed particular expertise in the concurrent evidence procedure commonly known as "hot tubbing," where experts from both parties give evidence together with the tribunal member questioning both experts simultaneously on areas of agreement and disagreement. This procedure has proven effective in narrowing technical issues and reducing the need for extended expert testimony.
Queensland has not formally adopted the harmonised code, maintaining its own framework through the Uniform Civil Procedure Rules and Supreme Court Practice Directions. Significantly, Queensland has implemented specific amendments to require disclosure of any generative artificial intelligence tools used in the formulation or expression of expert opinions, reflecting the same concerns as other jurisdictions about maintaining the authenticity and reliability of expert evidence. Western Australia and South Australia similarly maintain their own procedural frameworks, with the Western Australia Supreme Court Rules 1971 and District Court Rules 1988 governing expert evidence in those respective courts.
Commercial Arbitration
Arbitration has become an increasingly important dispute resolution mechanism for construction and infrastructure disputes in Australia. The International Arbitration Act 1974 (Cth) implements the UNCITRAL Model Law for international commercial arbitration, whilst each state and territory has enacted its own Commercial Arbitration Act governing domestic arbitration. These legislative frameworks provide considerable flexibility in relation to expert evidence procedures, recognising that the rules of evidence do not automatically apply in arbitral proceedings unless the parties expressly agree or the tribunal determines that they should apply.
The Australian Centre for International Commercial Arbitration (ACICA) promulgates the 2021 ACICA Arbitration Rules, which represent the primary rules adopted for international commercial arbitration in Australia. These rules require expert witnesses to submit comprehensive statements of their qualifications and explicit statements confirming their impartiality and independence. The rules direct arbitrators to have regard to the IBA Rules on Taking of Evidence in International Arbitration, which provide a detailed framework for the management of expert evidence. Whilst the IBA Rules are not mandatory in Australian arbitration, they are widely adopted and strongly referenced, and they provide a practical framework that tribunals find effective in managing expert evidence efficiently. ACICA underwent significant changes in late 2024, with the reconstitution of the Rules Committee tasked with reviewing the 2021 Rules to reflect developments in international best practice. An updated version of the ACICA Rules is expected for publication in 2026 and will incorporate lessons learned from post-COVID developments in online hearing procedures and contemporary practice.
The Chartered Institute of Arbitrators (CIArb) has made a substantial contribution to the governance of expert evidence in international arbitration through its Protocol for the Use of Party-Appointed Expert Witnesses in International Arbitration. The CIArb Protocol, prepared by the Practice and Standards Committee, provides a comprehensive regime for party-appointed expert evidence, addressing the identification of issues to be dealt with by expert evidence, the number and identity of experts, required tests and analyses, the independence of experts, the contents of expert opinions, privilege, meetings of experts and the manner of expert testimony. Structured along similar lines to the IBA Rules and aligned with those parts dealing with party-appointed experts, the CIArb Protocol expands upon the IBA framework by catering for tests and analyses to be conducted, providing more detailed guidance as to what should and should not be in an expert's written opinion, and addressing independence and privilege. A distinctive feature of the Protocol is its requirement for an experts' conference before reports are produced, at which experts identify the issues upon which opinions are sought, the analyses to be conducted and areas of agreement, with these discussions conducted on a without-prejudice basis. CIArb is also currently undertaking a significant project titled "Maximising the Effectiveness of Party-Appointed Expert Witness Evidence in ADR," co-chaired by Michael Tonkin C.Arb FCIArb, which includes global surveys and regional subgroup analysis across the Americas, Europe and Africa, the Middle East and North Africa, and Asia Pacific, and which will culminate in the release of guidance notes providing principles and practical guidance for maximising expert effectiveness.
The Resolution Institute, one of the largest dispute resolution bodies in Australasia, promulgates its own Arbitration Rules 2023, which have been developed to follow the UNCITRAL Arbitration Rules wherever possible and to be consistent with Australian Commercial Arbitration Acts and the International Arbitration Act 1974. The Resolution Institute Arbitration Rules include specific provisions for experts appointed by the arbitrator, with parties bearing the expert's fees and expenses in equal shares, and parties being provided with the expert's report and given an opportunity to cross-examine the expert. The Resolution Institute also published its Expert Determination Rules 2024, effective from 15 October 2024, which provide a framework for the conduct of expert determinations including compliance by parties with procedural and evidentiary directions. These rules empower the expert to make directions and rulings in relation to the provision of submissions and evidentiary material. The availability of arbitration and expert determination under Resolution Institute rules provides a well-established institutional framework for the resolution of construction and infrastructure disputes in Australia.
The Federal Court's Commercial Arbitration Practice Note (CA-1) provides guidance on procedural matters affecting arbitration in Australia and emphasises the court's policy of minimal intervention in arbitral proceedings, with enforcement of arbitration agreements and arbitral awards being the court's primary concern. Arbitration provides particular advantages for construction disputes involving complex technical evidence and competing expert opinions. Arbitrators with construction and engineering expertise can be selected, the procedures can be adapted to suit the nature and complexity of the dispute, and the tribunal can control the timetable and hearing procedures to ensure efficient management. Many construction disputes are resolved through arbitration seated in Australia or through international arbitration under ACICA, CIArb or Resolution Institute rules, with parties increasingly utilising expert procedures including concurrent evidence and single joint expert appointments to narrow technical issues and reduce hearing time.
Specialist Tribunals
Specialist tribunals play a crucial role in resolving construction and infrastructure disputes in Australia. The NSW Civil and Administrative Tribunal (NCAT), the Victorian Civil and Administrative Tribunal (VCAT) and the Queensland Civil and Administrative Tribunal (QCAT) all have dedicated divisions handling construction and building disputes. These tribunals handle disputes ranging from domestic building defects to complex commercial construction matters, and expert evidence is regularly adduced in these forums.
The use of expert evidence in these tribunals is subject to specific practice notes and procedures. VCAT, in particular, has developed considerable experience in managing expert evidence through its Practice Note on Expert Evidence, and has promoted the use of concurrent expert evidence or "hot tubbing" as an effective means of presenting competing expert opinions. In this procedure, experts from both parties give evidence together, allowing the tribunal member to question both experts simultaneously and to identify precisely where their opinions diverge and why. This concurrent evidence procedure is significantly more efficient than traditional sequential expert evidence and enables tribunals to better understand the technical issues at stake.
An important development across all Australian jurisdictions has been the enactment of security of payment legislation in each state and territory. The Building and Construction Industry Security of Payment Act 1999 (NSW) was the original model, and similar legislation has now been enacted in Victoria, Queensland, Western Australia, South Australia, Tasmania, the Australian Capital Territory and the Northern Territory. In Western Australia, the Building and Construction Industry (Security of Payment) Act 2021 replaced the previous Construction Contracts Act 2004, whilst in Queensland, the Building Industry Fairness (Security of Payment) Act 2024 replaced the earlier 2010 Act, reflecting an ongoing commitment to modernising the framework.
Security of payment adjudication is a rapid dispute resolution mechanism designed to address payment disputes during the course of construction contracts. An adjudicator must determine a payment claim within ten business days (with possible extension of five additional days), and adjudicators are not bound by the rules of evidence. Expert reports, measurements, test results and quality certificates are readily admissible, and the adjudication process provides a mechanism for presenting expert evidence without the procedural formality required in litigation or arbitration. Expert witnesses in adjudication remain subject to fundamental duties of independence and accuracy, and their evidence must be capable of withstanding scrutiny in any subsequent legal proceedings. Data from the 2021 Security of Payment Report indicates that over eighty percent of disputes resolved through adjudication are not pursued further in legal proceedings, demonstrating the effectiveness of this mechanism in achieving final resolution.
Contemporary Issues
Australian courts and tribunals are actively grappling with significant contemporary developments affecting expert witness practice, particularly in relation to the use of artificial intelligence and generative artificial intelligence tools in the preparation of expert reports. These developments reflect a broader judicial concern about ensuring the authenticity, reliability and authorship of expert evidence.
In New South Wales, practice notes issued by the Supreme Court, District Court and Land and Environment Court in 2025 have expressly addressed the use of artificial intelligence in expert reports and affidavits. The Land and Environment Court requires clear evidence that expert reports have been authored without the assistance of generative artificial intelligence, and several practice notes restrict or discourage the use of AI tools in preparing expert evidence. This reflects judicial recognition that whilst AI tools may have legitimate applications in research and information gathering, the core process of forming expert opinion and expressing it in writing should be undertaken by the expert personally, without AI assistance determining or materially influencing the opinion expressed.
Queensland has implemented similar requirements in the Supreme Court Practice Direction 14 of 2024 (updated 2025), which now requires explicit disclosure of any generative artificial intelligence tools used in formulating or expressing expert opinions. This transparency requirement places the onus on the expert to disclose AI involvement, allowing the court or tribunal and the opposing party to assess whether the use of AI has compromised the reliability or authenticity of the expert evidence. Victoria's new Civil Procedure Rules 2025, effective from September 2025, have similarly addressed procedural modernisation in a way that reflects contemporary concerns about evidence reliability.
Beyond the artificial intelligence developments, Australian dispute resolution has seen the continued evolution of expert witness procedures. ACICA's Rules Committee, reconstituted at the end of 2024, has commenced a comprehensive review of the 2021 Rules to align with international best practice, with an updated version anticipated in 2026. This review reflects both the lessons learned from post-COVID online hearing procedures and the need to ensure that Australian arbitration rules remain consistent with developments in other major international arbitration centres.
Sydney-Based Expertise
Expert Services International can provide services across all Australian jurisdictions. Led by Neil Kirkpatrick, a quantity surveyor and chartered arbitrator with decades of experience in construction and infrastructure disputes, the practice combines technical expertise in quantum, delay, disruption and construction defects with knowledge of Australian procedural frameworks and codes of conduct.
Whether the dispute is proceeding in the Federal Court, a state supreme court, a specialist tribunal, international arbitration or security of payment adjudication, our team understands the specific requirements applicable to each forum. We prepare expert reports that comply strictly with applicable codes of conduct and practice directions, we provide testimony capable of withstanding expert and judicial scrutiny, and we participate effectively in concurrent expert procedures and expert meetings designed to narrow technical issues and promote resolution.
Our Expertise
Expert Services International can provide expert witness services to law firms, stakeholders, investors, contractors, principals, engineers and other parties involved in construction and infrastructure disputes across all Australian jurisdictions. Based in Sydney, our expertise spans the full range of quantum, delay, disruption and construction defects issues that commonly arise in construction, resource and infrastructure contracts, and we maintain detailed knowledge of Australian procedural frameworks, codes of conduct and the requirements applicable in each forum.
Our consultants are trained and experienced in the preparation of expert reports that comply with applicable codes of conduct and court rules. We understand that expert evidence in Australia must be presented in a manner that explicitly acknowledges the expert's overriding duty to the court or tribunal, that identifies any potential conflicts or matters that might affect impartiality, and that clearly distinguishes between facts within the expert's knowledge and the opinions and conclusions expressed. Our reports are prepared to withstand the scrutiny of experienced lawyers and judges, and we ensure that our methodology is transparent, our factual foundation is sound and our conclusions are firmly grounded in industry practice and contractual analysis.
We are experienced in all of the contemporary expert procedures utilised in Australian dispute resolution, including concurrent expert evidence procedures, single joint expert arrangements and expert meetings to narrow areas of dispute. We participate in international arbitrations under ACICA, CIArb and Resolution Institute rules, and we provide expert evidence in security of payment adjudication and expert determination proceedings across all states and territories.
Service Scope
Detailed expert reports addressing quantum claims, delay analysis, construction defects and technical matters in Federal Court, state supreme courts and specialist tribunals. Our reports comply strictly with applicable codes of conduct, practice directions and procedural rules, presenting clear methodology, transparent reasoning and conclusions capable of withstanding expert scrutiny and cross-examination.
Providing expert testimony in litigation, arbitration, mediation, expert determination and adjudication proceedings. Our consultants are experienced in articulating complex technical and financial information clearly and persuasively, remaining composed under cross-examination and adapting their evidence as required by the court or tribunal.
Participation in concurrent expert evidence procedures (hot tubbing), single joint expert arrangements and expert meetings to narrow areas of dispute and identify common ground. These procedures are increasingly utilised in Australian tribunals and arbitration to clarify technical positions and reduce the scope of contested expert evidence.
Expert services in international arbitration under ACICA rules and domestic arbitration under state Commercial Arbitration Acts, as well as expert evidence in security of payment adjudication and expert determination proceedings. We understand the specific procedural requirements applicable in each forum.
