Builders, developers and module suppliers working in New South Wales now have a new law to plan around. The Building (Approvals and Practitioners) Act 2026 passed Parliament on 4 August 2026 and received assent on 14 August 2026, as Master Builders NSW reported on 31 August 2026. It is the first NSW law to deal with prefabricated buildings by name. The problem is timing. Most of the Act is not yet in force, the detail sits in regulations still being written, and projects being priced today will be built while the rules change. Here is what is known and what to prepare.
What the new Act says about prefabricated buildings
Master Builders NSW and the Australian Constructors Association both describe the same core changes. The Act defines prefabricated buildings. It brings their manufacture, supply, transport and installation into the NSW approvals system. Work done before a module reaches site becomes part of the approval.
The Act also creates two new documents:
- Prefabricated building declarations. A formal statement about the prefabricated building.
- Prefabricated building instructions. Instructions that go with the building for its installation.
What each document must contain, who signs it and when it is lodged will be set by regulation. Those details are not yet published.
What is not yet in force
- Most of the Act starts on dates to be set by proclamation. No start date for the prefabricated building parts has been fixed.
- The regulations are being consulted on through 2026 and 2027. The content of declarations and instructions depends on them.
- Until the new provisions start, the current Design & Building Practitioners Act still applies to NSW work.
So a project approved and built in 2026 runs under the current rules. A project that is still in the factory or on site when the new provisions start may need to meet them. Watch the proclamation dates.
Why modular fits NSW right now
The NSW Government is backing offsite construction. Its “From factory to front door” plan, released on 21 June 2026 with the 2026-27 Budget, runs a two-stage tender for modern methods of construction factory operators and sets government procurement to favour these methods. The same Budget funds 8,400 social homes. Homes NSW plans 90 homes built this way by the end of 2026, and the NSW Government reported that three modular homes at Shellharbour went from approval to completion in 14 to 16 weeks. Build Australia reported that the Key Worker Housing Program will deliver 290 homes for teachers and police in more than 90 regional towns, with 58 built using these methods. See our pages on modular social housing in NSW and modular accommodation buildings in NSW.
What EcoPrestige supplies
EcoPrestige supplies engineered structural steel volumetric modules, built and inspected in an offsite factory. We are not the builder. A NSW builder holds the head contract and runs the site. For each project we supply the modules and a documentation pack: structural details, connection details, inspection records from the factory, and lifting and installation information. That pack is a sound starting point for the declarations and instructions, and we will align it once the regulations are made.
What does not fit
- Projects that need a firm statement today of what the declarations will contain. Nobody can give that until the regulations are made.
- Sites with no truck or crane access, where modules cannot be delivered or lifted.
- Clients who want the supplier to take the head contract. That stays with your builder.
The approval path in NSW
EcoPrestige coordinates the module design with your consultants; permit drawings are issued by the registered or licensed practitioner the state requires. The certifier assesses and certifies the building. NCC class depends on use. Student housing is typically Class 3, confirmed by your building surveyor. Offices are typically Class 5, confirmed by your building surveyor. See building permits for modular buildings.
The programme
Factory and site work run in parallel. While footings, services and civil works go ahead on site, the modules are built and inspected in the factory. Time on site is shorter. Once the regulations are made, add the declaration and instruction steps to the programme. Our early contractor involvement service is the place to start that planning.
What to send us
A short brief lets us check fit and price the supply for your site:
- 1. Site address and a site plan with access for trucks and a crane.
- 2. The use of the building and the expected NCC class.
- 3. Any concept or planning drawings.
- 4. Your target start on site and completion date.
- 5. Your builder, certifier and consultants, if appointed.
For Sydney projects, see modular construction in Sydney.
NSW prefabricated building law: questions we are asked
When does the NSW Building (Approvals and Practitioners) Act 2026 start?
It passed Parliament on 4 August 2026 and received assent on 14 August 2026. Most of it starts on dates to be set by proclamation, so it is not yet in force.
Does the new Act apply to prefabricated buildings?
Yes. It defines prefabricated buildings and brings their manufacture, supply, transport and installation into the NSW approvals system.
What are prefabricated building declarations and instructions?
They are two new documents created by the Act. Their content, and who prepares them, will be set by regulations that are being consulted on through 2026 and 2027.
Which law applies to NSW projects right now?
Until the new provisions start, the NSW practitioner law already in force still applies, alongside the current approval rules.
Is EcoPrestige the builder on a NSW project?
No. EcoPrestige supplies the modules and the documentation pack. Your NSW builder holds the head contract and the site, and the certifier certifies the building.
Getting a NSW modular project ready for the new rules?
Send the site, the use and any drawings to prebuilt@ecoprestige.com.au or download our technical brochures.
This page is general information, not legal advice.