NSW has passed new building legislation relevant to prefabricated and modular construction. For buyers, the important question is not only what the law changes, but which requirements apply when their project starts.
The short answer
The NSW Parliament record confirms passage on 4 August 2026 and assent on 14 August 2026. It is now the Building (Approvals and Practitioners) Act 2026, No 26.
Do not read assent as confirmation that every reform is operating. Check current requirements with your certifier before ordering, commencing work or relying on new approval terminology.
What is confirmed, and what is still being implemented?
| Question | Position checked on 28 September 2026 |
|---|---|
| Has the legislation passed? | Yes; Parliament records passage and assent |
| Is the entire new approval framework operating? | Do not assume so; implementation depends on commencement and supporting regulations |
| Can buyers stop using the existing approval pathway? | No; confirm which requirements apply to the project |
| Is there a guaranteed faster approval or lower price? | No project-specific guarantee follows from passage |
Building Commission NSW identifies prefabricated-building regulation and a modernised approvals framework as reform priorities. It says associated regulations are being developed, with industry consultation during 2026 and 2027.
Existing processes still matter
The NSW Planning commencement guidance says most provisions have not started. Existing approval processes continue until the relevant provisions commence.
Do not assume a manufactured-home installation approval is no longer needed, or that every prefabricated building now follows one identical pathway. Product format, legal classification, site and intended use still need assessment.
Start with our NSW approval guide. For a project-specific brief, record whether the proposed use is permanent living, a second dwelling, guest accommodation or another use.
What about Construction and Occupation Certificates?
The reforms introduce a different building-approval framework. That is not a reason to discard existing certificates or rewrite a live project's documents without advice.
Ask the certifier which regime applies, what authorises work to begin and what document permits occupation. Keep the answer with your project records, especially if the application spans a transition period.
A document described as a supplier certificate is not automatically the site's building approval. Our Class 1a certification guide explains the broader chain of evidence.
A buyer's checklist before paying a deposit
- 01Identify the proposed use and the exact land.
- 02Ask which approvals are required under the current regime.
- 03Name the person coordinating applications and inspections.
- 04Request the drawings and engineering needed for the chosen model.
- 05Confirm which factory-stage evidence the certifier will accept.
- 06Separate freight, installation, site works and approval costs from the product price.
- 07Record how design changes and transition requirements will be managed.
These are project questions, not a promise that one document or supplier can resolve every obligation.
Questions for the supplier and project team
Ask who supplies the module specifications, installation instructions and compliance evidence. Clarify which responsibilities sit with the manufacturer, builder, installer and certifier.
Request written answers for overseas manufacture, concealed work and onsite connections where relevant. Do not accept a general statement that the new law makes all modular homes approved.
For contract scope, read our partnership responsibility guide. It helps separate responsibilities without assuming that every project uses the same arrangement.
Before acting on a reform announcement
Recheck official guidance when you lodge an application or sign a contract. This article records the position reviewed on the date above; it does not establish the rules for a later application.
Compare the NSW and Victoria frameworks if you are considering sites in both states. Choose the pathway for the actual site rather than a headline about reform.
Frequently asked questions
Has the NSW Building (Approvals and Practitioners) Bill 2026 become an Act?
Yes. NSW Parliament records passage on 4 August 2026 and assent on 14 August 2026 as Act No 26. Assent does not mean every provision or new approval process has commenced.
Have existing NSW approval processes already been replaced?
Do not assume so. NSW Planning says existing processes continue until the relevant parts of the Act commence. Ask your certifier which regime and documents apply to your project.
Does the reform make modular homes approval-free?
No. Confirm the site, intended use, classification and applicable planning, building and installation requirements. A product listing or reform announcement is not approval for your project.
Should I rely on an estimated commencement date?
No. Check official commencement and transition guidance when making the application or contract decision. Ask the project team to document the requirements they have relied on.
Next steps
Product selection links updated on 6 October 2026; the regulatory position above was reviewed on 28 September 2026.
For a residential brief, compare permanent modular home layouts. For a separate workspace, compare backyard office pods. Product listings help you build a shortlist; they do not establish approval under either the existing or future framework.
Start your Planning Assessment with the proposed site, intended use and product shortlist.
This is general information, not legal, planning or compliance advice. Confirm requirements with the relevant authority and qualified project professionals before making a commitment.
Sources and further reading
Requirements change and can be applied differently by site and local authority. Check the current official sources and confirm your project with the relevant council, certifier or qualified professional.