Sustainably Modular.
Better.
SUSTAINABLY MODULAR FROM THE START
The Pioneers of PreCrafting
In recent years, modular, prefabricated building has become popular as an affordable and sustainable alternative to traditional construction.
We pioneered the concept back in 1976.
Our founder’s aversion to waste led us to develop modular, panel-built construction methods, with sustainability a priority from the very beginning. Our simple clearspan structures quickly gained popularity, and the business grew and evolved to include a wide range of designs for backyards and rural properties.
Over the past 50 years, we have continuously evolved our designs and processes to deliver buildings with superior modularity, beauty and strength. It’s a refined approach to prefabrication that we call PreCrafting.
It’s not so much a trade as a calling, and it runs in our blood. Now a third-generation family business, and with well over 10,000 PreCrafted buildings across Australia, Greenspan is a name you can trust.
A Better Way to Build
Traditional on-site construction is slow and wasteful by nature. Materials are cut and fitted in the elements, offcuts pile up, and a build can take months or even years, with repeated deliveries, trades and heavy machinery on site throughout.
Prefabricated building is the opposite.
The manufacturing work is done off-site, usually in just weeks. Buildings often arrive in just one delivery, and, as the modular, pre-built panels are ready to connect rapidly and efficiently, minimal trades, vehicles, equipment and time are required on site.
See how prefab compares with traditional construction.
Video: Michael Troy, a journalist and former builder, and Cathi Ogden, clients of Greenspan Buildings, talk about how their PreCrafted build compared with a traditional or architect-designed build, covering pier foundations on a flood-prone site, minimal site waste, panel installation speed and cost certainty.
Michael: It was the quality of it, you could tell. We did try to build it as an architect design, but it was going to be too expensive and take a long time. We’d probably be sitting in a pile of rubble if we’d gone down the architect path.
Michael: He was super helpful and took us through all the options, whether we’d have a deck, whether we’d have an awning. We decided not to have an awning because it’s facing south.
Michael: It was a really amazing process. It was actually really simple. I couldn’t believe how well it was packaged up. There was virtually no waste at the end of the day. The two contractors were brilliant, they carried it all down and assembled it in two days.
Michael: A lot of builds go slab on ground, and that wouldn’t have suited here, a concrete floor would have flooded. We have to build to allow for water, which comes up every now and then. So building on piers was fantastic for this tight floor.
Michael: Normally when you build a pier-based floor you have to construct the bearers and joists separately. But with the way Greenspan did it, it all came in one package. They carried it down in groups and put the floor together so efficiently, and levelled it up. The whole system was brilliant, how you could actually get it together.
Michael: Once the floor was in place, the rest was all panels, and each one was very quick to put together. Within hours the guys had it assembled. The speed of using pre-made panels, and the skill of the installers putting the pieces together, is so much quicker than building everything on-site and making the framework on-site. That takes forever.
Michael: It was a very efficient process. I’d say six weeks traditional to build this size place, depending on how it was done. It would take a carpenter six weeks to get all the gear down and cut everything to size on-site. It’s not an easy place to cut in either, if you’re working in a confined area it hampers the carpenter. So this was much easier and quicker than doing it any other way.
Michael: That’s what I’ve noticed so often with building, everything blows out in cost, and this one didn’t. It’s a credit to them that they know exactly what you’re going to pay. Having a really concrete idea of what it’s going to cost up front is invaluable.
Michael: It was good that we found the right product. We knew it was right, it was an instinct thing. Cathi was the one going, “Go on, get it, get it, get it, get it.”
Cathi: I love it. It’s amazing.
Sustainable by Design
Just like our buildings, sustainability looks different on every site.
Browse recent projects where our customers have built with sustainability front of mind, from off-grid cabins to environmentally conscious backyard buildings.
Sun Ranch: A luxurious showcase of sustainability
Cedarspan 4050
Sustainability and stability for a Sydney Artist
Melwood Workshed 2654
Johan’s off-grid rural barn life change
Cedarspan 2040
Two Melwoods and a dream
Melwood Mod 23 and
Porch 12
From humble hut to pavilion paradise
Cedarspan 2040
A gorgeous self-sustainable studio retreat
Melwood eSpace 2000
Truly Modular
The foundation of every Greenspan building is a set of modular, pre-built panels.
Each wall panel arrives as a complete unit – structural timber framing with exterior cladding, wall wrap, and your chosen windows and often doors pre-fitted.
The roof is the same – timber-framed panels with Colorbond® roof sheets and Anticon® blanket insulation pre-fitted.
The floor is a system of pre-built grids set on piers, usually eliminating the need for a concrete slab and extensive earthworks.
The result is a system that connects together quickly and efficiently – a smaller backyard building can reach lock-up stage in as little as a day; larger buildings, in a week or two. That’s a fraction of the time a traditional build takes, with less labour, less noise and far less impact on the site around it.
Sustainably PreCrafted,
Responsibly Sourced
PreCrafted construction significantly minimises waste compared to traditional methods.
It begins with advanced design technology where every detail – from the pitch of the roof to the placement of each bolt – is carefully planned with millimetre precision. Then, in our Sydney factory, we combine lean manufacturing methods with time-honoured craftsmanship, following a meticulous 50-step process and 20 rigorous quality control checks. This doesn’t just ensure the modular parts fit quickly and easily on site; it also guarantees the best outcome for you and the environment.
But our commitment goes beyond how we build – it extends to who we build with.
We partner with suppliers who share our dedication to responsible sourcing, resource efficiency, and a reduced carbon footprint. From renewable plantation structural timbers to eco-friendly insulation and roofing, every material is selected for durability and low environmental impact.
Learn more about our approach to sustainable building.
PreCrafting, Better Prefab
Not all prefab is equal.
It can describe little more than a dressed-up shed, or a set of pre-measured and pre-cut materials you need to build yourself.
PreCrafting – our version of prefabrication – is different.
Our buildings are genuinely modular – manufactured off-site and delivered as complete, pre-built, pre-fitted panels, not just a set of materials. And because they’re over-engineered to exceed the National Construction Code, and expertly handcrafted from high-quality materials designed to endure the extremes of the Australian climate, they’re built for life, not just years. After all, a building that lasts for generations is the most sustainable of all.
There are some things worth knowing before you invest: what to look for in a quality build and what actually drives a prefab building’s cost.
Building advice
There’s a lot to think about when planning a building that’s sustainable, truly modular, and made to last.
From the difference between prefab and traditional construction, to how to judge a quality prefab build, these resources cover what’s worth knowing before you invest.
FAQs
Yes. They are designed and built with year-round comfort and efficiency in mind. We use high-quality materials selected for their performance in Australia’s climate, and every building features the natural insulating properties of timber cladding. Anticon® blanket roof insulation and permeable vapour barrier wall wrap are included as standard, with optional upgrades available, including thermal roofing and advanced glazing such as double, Low-E or argon-filled units. Window, door and building placement can be planned to make the most of passive solar orientation, and our precision PreCrafting process minimises thermal gaps and air leakage. Our buildings are also adaptable to extreme conditions, including bushfire, snow-prone and cyclone regions.
Yes, and often more so. Our buildings are fully engineered structures built to exceed the National Construction Code, made from high-quality materials selected for their resilience in the Australian climate, and backed by a 10-year structural warranty with a 40-year guarantee on our timber treatment system.
The greatest testament to this is longevity – after 50 years of continuous trading, many of our earliest buildings are still standing. They can even be relocated by craning or disassembling, and many of the materials can be recycled and reused.
Timber is the ultimate sustainable resource, with every stage of its production cycle being the most environmentally friendly of all building materials.
It has the lowest embodied energy of any mainstream structural material, so less energy goes into producing it, and as trees grow they absorb carbon dioxide, which stays locked in the timber for the life of the building. It is also versatile, high-strength, naturally insulating and resilient to Australia’s harsh conditions. Our structural timber comes from sustainably managed plantations that replant at least one tree for every one harvested, so choosing timber supports an ongoing cycle of growth and carbon capture rather than depleting a resource.
By optimising material use at every stage.
Because panels are measured and cut in our factory, offcuts are minimised and leftovers repurposed where possible, and errors, rework and replacement materials are all reduced. Factory production also shortens build times, tightens control over energy use, cuts transport emissions, and shields materials from weather damage. On site, fewer trades and vehicles are needed, and our pier-mounted floor system often removes the need for major earthworks, meaning less soil erosion, less noise and air pollution, and minimal impact on local flora and fauna.
A 2007 study by the Waste and Resources Action Programme (WRAP) found modular and off-site construction can reduce material waste by up to 90 per cent compared with traditional on-site building.
Sustainably sourced, certified materials can cost more than uncertified alternatives, but they are part of why a PreCrafted building lasts for decades rather than years. However, building off-site also removes many of the labour, waste and site costs of traditional construction, so it is usually a far more cost-effective way to build. For a full picture of what affects the price, see what actually drives a prefab building’s cost and how prefab compares with traditional construction.