Australia’s National Construction Code continues to shape fire safety requirements for building projects. The latest bca 2025 requirements introduce important changes, but they do not apply across every Australian jurisdiction at the same time. This makes it important for project teams to confirm which requirements apply to their building before design and approval decisions are finalised.

Fire safety engineering, building code compliance, performance solutions, and technical reviews can all form part of this process. Understanding the applicable requirements early can help project teams identify changes that may affect fire safety design, documentation, and approval pathways.

Different Adoption Dates Across Australia

The updated requirements are being adopted differently across Australian states and territories. Victoria and Tasmania adopted the new requirements from 1 May 2026, with specific exclusions applying in Tasmania. The Australian Capital Territory and Western Australia are moving toward mandatory adoption from 1 May 2027 and permit voluntary early adoption during the transition period.

New South Wales, Queensland, and South Australia have deferred adoption until 1 May 2027. The Northern Territory will remain on NCC 2022 Amendment 2.

These different adoption dates create a transition environment for professionals working across multiple jurisdictions. The project location, approval timing, and applicable regulatory pathway should therefore be reviewed before the relevant fire safety provisions are selected for design and documentation.

Major Changes for Carpark Fire Safety

Carpark fire safety is an important area affected by the updated requirements. The Deemed-to-Satisfy provisions have been comprehensively revised to address modern vehicles, electric vehicles, and car stacker systems.

Open-deck carparks forming part of multi-classified buildings now require sprinkler protection. Carparks exceeding 40 vehicles also require sprinkler protection, whether the carpark is open or enclosed. Car stacker systems require dedicated sprinkler coverage.

Some previous Fire Resistance Level concessions for open-deck carparks have also been removed. These changes may be particularly relevant to residential, commercial, mixed-use, and other developments that include integrated carparking.

Project teams should review existing fire safety assumptions when requirements change. Early technical review can help identify whether the proposed design remains suitable or requires further assessment.

Performance Solutions and Technical Updates

The updated requirements also include changes relevant to Performance Solutions and technical documentation. Where structural reliability is relevant to a fire engineering brief, a more rigorous assessment may be required, including quantified reliability indices rather than relying only on qualitative judgement.

Combined sprinkler and hydrant systems using AS 2118.6-2026 as an acceptable solution also have revised pipework requirements. Above-ground pipework must use metal pipework.

At the same time, some new Deemed-to-Satisfy flexibility can reduce the need for Performance Solutions. Certain lightweight and steel fire-rated load-bearing walls may be permitted in fully sprinklered buildings below the specified effective height. Hybrid photoluminescent exit signs have also been added to the available pathway.

These technical changes demonstrate why fire safety design should be reviewed against the requirements applicable to the specific project.

How Professional Fire Engineering Supports Projects

Vortex Fire provides independent consultancy for building codes and fire safety engineering. Its services are supported by professionals with global experience and local expertise. The company provides Building Code Consulting and Fire Strategy, Performance-Based Design, Computational Fluid Dynamics for fire and smoke modelling, emergency egress modelling, fire safety plans, partial occupancy plans, fire risk assessment, advisory services, third-party peer review, and fire expert witness services.

Its verification and assurance services include active and passive fire inspections, facade assessments, and building cladding fire audit and risk assessment.

These services can support project teams that need to understand fire safety requirements, assess design options, review technical information, or obtain independent technical input. The focus is on developing solutions that address fire safety and building code objectives while considering the requirements of the project.

Reviewing a Project Before Approval

Reviewing fire safety requirements at an early stage can help identify issues before they affect later project stages. A development designed using previous carpark assumptions, for example, may need to be assessed against the revised provisions for sprinkler protection and fire resistance.

A project may also need to determine whether a Performance Solution is necessary or whether an available Deemed-to-Satisfy pathway can be used. This requires an understanding of the applicable requirements and the technical characteristics of the building.

Vortex Fire works across jurisdictions affected by the transition, including Victoria, New South Wales, and the Australian Capital Territory. Its consultancy services cover building code advice, fire strategy, performance-based design, fire modelling, egress assessment, risk assessment, peer review, and inspection.

Experienced Building code consultants can provide technical direction when project teams need to understand how applicable requirements may affect a building. Independent review can also help clarify technical questions before approval and construction decisions are finalised.

Conclusion

The transition to bca 2025 requires project teams to carefully consider jurisdiction, adoption dates, approval timing, fire safety design, and documentation. The changes affecting carpark sprinkler protection, car stacker systems, fire resistance provisions, Performance Solutions, and technical systems can influence building design and compliance decisions.

Early assessment is useful when a project crosses a transition period or uses design assumptions based on earlier requirements. Vortex Fire provides independent fire safety engineering and building code consultancy services, together with fire strategy, performance-based design, fire modelling, egress modelling, risk assessment, peer review, and inspection services.

Working with qualified Building code consultants can help project teams understand applicable requirements and address fire safety matters through a structured technical approach.

FAQs

Does the updated code apply across Australia at the same time?

No. Adoption dates differ between Australian states and territories. Project teams should confirm the requirements applicable to their jurisdiction and project timing.

Which fire safety area has significant changes?

Carpark fire safety is one of the major areas affected. Changes include sprinkler requirements for certain open and enclosed carparks and dedicated sprinkler coverage for car stacker systems.

Do carparks with more than 40 vehicles require sprinklers?

The updated provisions require sprinkler protection for carparks exceeding 40 vehicles, whether open or enclosed.

Have Performance Solutions changed?

Yes. The updated requirements include changes to the assessment of certain Performance Solutions and introduce additional technical considerations for structural reliability.

Can some projects avoid a Performance Solution?

Some new Deemed-to-Satisfy provisions provide additional flexibility and may reduce the need for a Performance Solution, depending on the project and applicable requirements.

What fire safety services does Vortex Fire provide?

Vortex Fire provides services including Building Code Consulting and Fire Strategy, Performance-Based Design, fire and smoke CFD modelling, emergency egress modelling, fire risk assessment, peer review, fire safety plans, and active and passive fire inspections.

Why should fire safety requirements be reviewed early?

Early review can help identify changes that may affect design, documentation, approval, and project decisions before the project progresses further.