Key takeaway points
- Standards Australia published the revised AS4000-2025 on 30 June 2025.
- The AS4000-2025 contains a wide variety of amendments, inclusive of adapted and additional clauses to account for legal developments, a standard template formal instrument of agreement and expansions to dispute resolution options.
Background and context
The much-anticipated AS4000-2025 has been published by Standards Australia, reflecting a myriad of legislative and industry changes seen over the past 28 years, since the last edition. The updates to the standard were administered by a select technical review committee, known as MB-010 General Conditions of Contract (the Committee). The Committee consisted of a variety of experts and industry stakeholders who were required to review the AS4000-1997 and discern required amendments, in accordance with the following principles:
- reflect legal developments (both legislation and case law) since the 1997 edition;
- improve the structure of the contract to align with modern standard form contracts; and
- keep any updates tightly focused so risk allocation under the revised contract is not imbalanced.
As part of the review, the Committee was also required to conduct public consultation, which sought industry feedback to further inform the revision of the contract.
The Revised Contract
The AS4000-2025 makes clear, in its Preface, that the new revision has been prepared to supersede the prior AS4000-1997, as well as the widely used AS2124-1992, which has persisted in its usage notwithstanding that the AS4000-1997 was intended to replace it from its inception.
The revised version contains welcome alterations, inclusive of the following notable amendments (inter alia):
- the inclusion of a standard formal instrument of agreement which makes express provision for the documents forming part of the contract and the contract sum;
- legal compliance updates (to account for legislative and case law development), ranging across goods and services tax (added at clause 6), personal property securities legislation (added at clause 44), termination rights relating to insolvency and work health and safety regulations, specifically concerning principal contractor appointment (added at clause 12.2);
- additional dispute resolution mechanisms outlined in clause 42 to allow more flexibility for parties (i.e. including mediation, expert determination and a dispute avoidance board as standard options, aside from negotiation and arbitration);
- further circumstances where disclosure of confidential information is permitted, inclusive of disclosure to professional advisors;
- the inclusion of a standard form deed of novation at Annexure Part D accounting for subcontractor novation to the principal;
- streamlining of definition placement in clause 1 and associated additions and clarifications; and
- modernisation of language to simplify use and application (i.e. “must” rather than “shall”).
Interestingly, the provision dealing with evidence of contract (prior clause 6) has been removed. This clause had expressly provided, albeit in a confusing way, that in the absence of a formal instrument of agreement being executed, documents representing the consensus of the parties evidenced the contract. The absence of this express statement might be considered by some as a loss, as it played a role where technical execution was lacking or where a letter of acceptance (of a tender) might be the preferred method for contract establishment. We speculate that the AS4000-2025 may be amended by some users to add it (or similar) back in, to ensure there is no quarrel about whether a contract is on foot notwithstanding that there has been a failure to execute (or a technically flawed execution of) a formal instrument of agreement.
The payment provisions within clause 37 have remained largely untouched (aside from new clause 37.3 splitting up the prior clause 37.2). This reinforces the need for parties to carefully amend these requirements to account for jurisdictional nuances associated with due dates for payment schedules and payment, in accordance with the security of payment legislation.
Notably, he risk allocation seen in the previous AS4000-1997 is maintained in the AS4000-2025, due to a mandate to not disturb the balance. There is inevitably criticism of this, with some stakeholders advocating for further optionality within the contract, which would arguably increase its functionality. Given the appetite for parties to seek amendments to the standard terms to suit their risk profiles, especially in complex projects, the mandate not to disturb risk allocation was perhaps a curious approach. However, the rationale behind the direction most likely derives from a previous, bolder attempt to rewrite risk allocation in the project concerning the AS11000, which was ultimately abandoned.
Final remarks
With the AS4000-1997 being a widely utilised instrument in the industry, it will be interesting to see how the transition to the AS4000-2025 will be embraced by stakeholders, especially having regard to the fact that some older standard contracts (such as AS4000-1997 and AS2124-1992) are expressly superseded. Further, as the Committee’s review process for the AS4000-1997 began in 2022, it is certainly of interest to monitor the progress of parallel revision to further related instruments, such as the AS4902-2000.
Contact our Commercialisation, Supply and Projects experts should you have any queries about this industry update, wish to seek advice regarding the implementation of this contract or require assistance in drafting a suitable contract for your next projects.
