Modernisation of the Dispute Resolution Framework in the AS4000 Construction Contract

For the first time in around 28 years, the AS4000 construction contract standard (now AS4000-2025) has received a meaningful overhaul.

The 2025 update to the AS4000 includes a meaningful shift in the way disputes can be managed and resolved under standard form construction contracts.  Among a number of technical refinements, the most noteworthy change is the expanded dispute resolution clause.  Introducing greater flexibility and formally recognising Dispute Avoidance Boards (DABs).

A broader, more flexible framework

Clause 42 of AS 4000:2025 now allows parties to tailor the dispute resolution process, by selecting one or more pathways in Annexure Part A.  In addition to the familiar options of negotiation and arbitration, the standard form now expressly includes:

1. Mediation: to facilitate resolution following direct negotiation;
2. Expert determination: ideal for resolving discrete technical disputes; and
3. DABs: proactive, standing boards that operate throughout the project to help avoid and manage disputes.

This flexibility gives parties the opportunity to align their dispute resolution process with the complexity, duration and risk profile of their project.

DABs: Preventing disputes before they escalate

DABs represent a clear departure from traditional reactive approaches.  Rather than waiting for disputes to arise, DABs are appointed at the outset of the project and engage with the parties regularly, monitoring progress, carrying out site inspections and identifying potential issues, and encouraging early discussion and resolution.

Where a dispute is referred to a DAB, it can issue a determination, either binding or interim, depending on what the contract provides.

For DABs to function effectively, careful thought must be given to:

1. Selecting qualified and independent members;
2. Adopting a clear procedural framework (such as those provided by the Dispute Resolution Board Foundation); and
3. Ensuring the project team treats the process as a genuine problem-solving mechanism.

Implications for project delivery

The introduction of DABs and the broader suite of dispute resolution options aligns the AS 4000-2025 more closely with international contracting standards (such as FIDIC), and reflects a broader industry move toward proactive and collaborative dispute management.

For principals, contractors and project teams, these changes create opportunities to minimise dispute risk, facilitate collaboration, avoid unnecessary cost and delay, and keep projects on track.

Disclaimer

The information contained in this publication does not constitute legal advice and should not be relied upon as such. You should seek legal advice in relation to any particular matter you may have before relying or acting on this information. The Lavan team are here to assist.