Custom Demountable and Modular Buildings

We locally manufacture demountable buildings including demountables,  site offices, demountable classrooms, portable toilets/shower blocks, site sheds and more. Our modular prefab construction method delivers your new space sooner, with customised options available for increased energy efficiency, comfort and style. Delivery is available in Sydney and interstate around Australia.

You can trust our team of experts to deliver a quality modular building – on time – and to your specifications. Our experience ensures your new building suits your needs and provides a comfortable space for your team. As they are transportable buildings – they relocate with you and always remain an asset.

Demountable Buildings

Demountables are constructed using modular building techniques. Steel framed demountable buildings are quick to build, and can be customised to suit any application: from offices, to ablutions to classrooms. They are fully insulated, bright and comfortable spaces.

Our team is experienced in this unique field and can customise a new demountable to suit you. Select from a. range of Colourbond colours and internal finishes to match your space to existing architecture. You can also select from a range of exterior styles including pitched ceilings with windows, awnings and decks.

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Portable Buildings

Modular Buildings

Ablution Blocks

Demountable Classrooms

Demountable Buildings and Modular Specialists

Our trades work together in our custom designed factory. Our construction methods are up to 50% faster than traditional construction. This means your new demountable is delivered faster. Every build is fully customised to suit your needs, with flooring, air condtioning, plasterboard and facade upgrades including two toned Colourbond available at no extra cost.

Can I expand as my needs change? Can I increase the size of my office or classroom? Can I add extra room later?

Yes you can! You can add additional modules for extra space, or relocate to a new site. You can transport your office locally or interstate.

Our factory is based in Sydney NSW. Delivery is available Australia wide. Our team has extensive experience constructing mining building and accommodation, site offices, demountable classrooms and learning spaces. We also build for hire companies – providing offices, toilets and ablutions. You can add modules to expand the size of your building as you grow or your needs change. You can also take it with you. Our educational clients enjoy the flexibility of demountable classrooms. You can expand your classroom as student numbers grow. Each flexible learning space can also customised to suit your needs.

We are proud members of PrefabAUS and support the prefabricated building industry. We also support trade apprenticeships including electrical, carpentry, boiler making/welding and plumbing. There is currently 5 generations of talent working in our factory. Our team includes some of most experienced builders in the portables industry.

Explore Recent Work

We are proud of the high quality demountable that we deliver to commercial, education, government, defence industry, and wide range of clients. Every building is individually designed and constructed – so you have complete control over specifications including cladding, flooring, interior finishes and additional inclusions such as kitchenettes and bathrooms. Environmentally friendly upgrades including laminated windows, underfloor insulation and solar power are also available.

We are also a preferred supplier to a number of hire companies. We’ve supplied over 700+ portable buildings including toilet blocks, shower blocks and site offices. to hire companies Australia wide. We even build prefab churches, structures and places of worship. You can check out our recent projects here.


Our Why

We exist to drive the industry to a new world of thinking, challenge current practices and create sustainable quality portable buildings of the future! We believe in sincere high intentions and deliver innovative solutions to our clients. Wherever possible we choose energy efficient, low environmental impact, recycled and recyclable products.  We support our team with a number of wellbeing and workplace health and safety programs.

What Our Customers Say

“We recently purchased a demountable building from BlueSky for our OOSH centre. Ben and his team were amazing and helped us through every stage. Ben kept us up to date on everything during the whole process. We are extremely happy with this company and would highly recommend BlueSky to anyone looking expand their business. They were very efficient and worked with us to fit into our budget. We are looking to expand even further and will be using BlueSky again.”

Jenny Clarke, OOSH
Grey demountable classroom School Room

Latest News

Find out what the team has been up to and check out our latest projects

Demountable Classrooms for Covid-19 Safe Schools

September 10th, 2020|

As a Sydney based manufacturer of high quality demountable classrooms, modular buildings, flexible learning spaces, and offices, we are helping schools Australia wide keep their students safe by providing much needed space for social


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