The size of a modular accommodation unit is set mainly by road transport. Width and height are limited by what can travel on the roads to your site with the permits and escorts that route allows, and length by the truck, the turning paths and the crane. Rooms are then planned to fit inside that module, or across two or more joined modules, so the layout follows the transport limits rather than the other way round.
This page is for mine operators, camp managers, motel and holiday park owners, student housing developers and the builders who deliver them. The problem is that a layout drawn on a blank sheet often cannot be cut into modules that travel. Fixing that after the drawings are done costs time. Start with the module.
How transport limits set the module
- Width: the biggest constraint. Wider modules need oversize permits and may need pilot vehicles or police escorts, and some routes cannot take them at all.
- Height: bridges, power lines and overpasses limit the loaded height, which sets ceiling height and roof form.
- Length: set by the trailer, the turning paths into the site and the crane reach.
- Weight: set by the crane, the road and the access track.
The same room can be a different module size on a city site and a remote one. We check the route before fixing dimensions. Our installation and crane guide covers site access and lifting.
Typical room types
Workforce accommodation
Single ensuite rooms are the common type, often two or more rooms per module with a shared corridor or an external walkway. Supervisor rooms are larger. Laundries, gyms, kitchens and dining rooms are built from joined modules. The Pilbara Development Commission counted 80,432 workforce beds in December 2025, with many villages at capacity. See modular workforce accommodation in WA.
Motels and holiday parks
Studio rooms with an ensuite, family rooms across two modules, and one or two bedroom cabins with a deck added on site. See modular cabins for holiday parks.
Student and key worker housing
Studios, twin share rooms and cluster apartments with a shared kitchen, stacked where the site and the engineer allow. See modular student accommodation.
What EcoPrestige supplies
EcoPrestige supplies engineered structural steel volumetric modules, built and inspected in an offsite factory, with rooms finished inside: ensuites, linings, joinery and services rough-in. We do not publish fixed module sizes, because the right size depends on your route, your site and your room mix. We size modules to your project.
What does not fit
Very large rooms, wide open-plan dining halls and high-ceiling spaces may need several joined modules or a site-built structure. Sites reached only by narrow or weight-limited roads can force smaller modules and more joins. Tall stacks need early engineering advice.
The approval path
Workforce accommodation is typically Class 1b or 3, and motels and student housing Class 3, each confirmed by your building surveyor. EcoPrestige coordinates the module design with your consultants; permit drawings are issued by the registered or licensed practitioner the state requires. Confirm who must sign with your building surveyor or certifier.
The programme
Fix the route, the module size and the room mix first. Then the factory builds the rooms while the builder prepares pads, services and walkways. Factory and site work run in parallel, so time on site is shorter.
What to send us
- 1. The site address and the road route in.
- 2. The number and type of rooms.
- 3. Shared facilities you need.
- 4. Any site layout or concept drawings.
- 5. Your builder and target occupancy date.
Modular accommodation unit sizes: questions
What size is a modular accommodation unit?
It depends on the road route and site. Width and height are limited by transport permits and the route, and length by the truck and the crane. EcoPrestige sizes modules to each project.
How many rooms fit in one module?
It depends on the module size and room type. Single ensuite workforce rooms are often grouped two or more to a module; larger rooms may span two modules.
Can modular accommodation be stacked?
Yes, where the site and the engineer allow. Stacking needs the structure, fire separation and access designed together.
What NCC class is modular accommodation?
Workforce accommodation is typically Class 1b or 3, and motels and student housing Class 3, confirmed by your building surveyor.
Laying out rooms for a modular accommodation project?
Send the site, the use and any drawings to prebuilt@ecoprestige.com.au or download our technical brochures.