Every so often someone sends me a version of the same claim: Australia builds houses out of steel, America builds them out of wood, and Australia is just ahead of us.
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It’s half true, and the half that’s wrong is the important half.
Australia didn’t decide steel was better and walk away from timber. It didn’t beat wood. What it did was quietly build an entire ecosystem around light-gauge steel: standards, engineers, fabricators, machines, builders, and supply chains that all speak the same language. America never built that ecosystem for single-family houses. That’s the real difference, and it’s the reason I pay close attention to how Australia did it. It’s a map for what I’m trying to build here.
Let me walk through what actually happened, because the lessons are more useful than the myth.
America isn’t behind on steel. It’s behind on one specific thing.
First, a correction in the other direction. The United States is not a backwater on cold-formed steel. We’re one of the most advanced countries in the world at it. Steel framing is everywhere in American construction: interior walls in nearly every commercial building, hotels, student housing, apartments, mid-rise, and modular. The engineering is mature. The manufacturing is excellent.
The gap is narrow and specific. It’s single-family houses.
And it isn’t because American builders don’t understand steel. It’s because American builders already have something that works extraordinarily well for houses, and that something is wood.
Think about everything sitting behind a wood-framed house in this country: forests and sawmills, lumber distributors, standardized dimensional lumber, millions of carpenters who already know the trade, house-plan conventions built around it, nail guns and tools designed for it, inspectors trained on it, architects who draw for it, and financing and insurance comfortable with it. That’s not a material. That’s an ecosystem, and it took a century to optimize.
Steel framing in the US isn’t competing against a bad technology. It’s competing against an incredibly optimized one. That’s a much harder problem than people admit, and it’s worth being honest about it. (I’ve written more about how entrenched that system is in Why Housing Productivity Barely Improved.)
Australia was asking a different question
Here’s the part that gets missed. In much of Australia, the homeowner was never really being asked to rip out wood and put in steel. They were asking a different question entirely: which lightweight framing system makes the most sense for this place?
Because “this place” in Australia often means termites. Termites are a serious, everyday concern across large parts of the country, and steel doesn’t get eaten. Australian building guidance specifically points to steel framing as popular in high-termite-risk areas. “This place” can also mean bushfire exposure, where a non-combustible frame can be an advantage and there’s a recognized steel-framing pathway for bushfire zones. It can also mean reactive soils, difficult sites, or high humidity, conditions that favor lightweight construction in general, with steel as one of the options rather than the only one.
When the environment is already pushing you toward a durable, lightweight, non-combustible frame that termites can’t eat, steel stops being a hard sell and starts being an obvious candidate. That’s a completely different proposition than the one steel faces across most of the US, where wood works fine and nobody’s frame is getting eaten.
The real lever was standards, not preference
If I had to name the single thing that moved Australia, it wouldn’t be termites or bushfire. It would be a standard.
Australia developed a national framework specifically for residential steel framing. The NASH Standard (from the National Association of Steel-Framed Housing) and AS/NZS 4600 (the cold-formed steel structures standard) are both recognized in Australia’s National Construction Code. That recognition matters more than it sounds. It means a builder using steel has a documented, accepted design pathway instead of a science experiment.
And the result is one of the cleanest case studies I know of. According to a NASH case study documented with Swinburne University, NASH’s research shows the steel-framed housing market roughly doubled over that period: from about 7% before 2005 to around 14% by 2015, measured by both number of houses and project value. That same research credits the more efficient frame designs developed under the standard with about $30 million a year in construction savings.
Now the honest part, because the story gets exaggerated online. That doubling is the broad steel-framed-housing figure. In detached single-family houses, timber is still overwhelmingly dominant, and steel remains a small minority there. Steel’s real gains showed up where density and performance demands rise: in attached and multi-unit housing, and especially in apartments, where the Victorian Building Authority estimated that steel frames went from almost none before 2005 to about a third of new apartments in that state by 2015.
I want to be careful about cause and effect here. NASH doesn’t claim the standard alone created that growth, and neither do I. What NASH argues, and what I find convincing, is that a recognized, documented design pathway gave builders the confidence to try steel. That’s the point that matters. Standards don’t just regulate an industry. They can help build one, because the bottleneck was never only the steel. It was confidence. When a builder knows a system has an accepted way to be designed and approved, the risk of trying it drops, and adoption follows. (This is the same argument I make in From 1% to 10%: What Steel Adoption Actually Depends On.)
Australia didn’t sell steel studs. It sold a system.
The other thing Australia did was refuse to stop at “steel coil to studs.”
It built the rest of the chain: coil to roll forming to engineered members to prefabricated wall and floor cassettes to whole-house prefabrication and modular. Australian industry groups describe a developed cold-formed steel supply chain, right through to prefabricated panel systems and modular construction. That’s a fundamentally different business model than selling framing by the piece.
Labor economics pushed it that way. Australia has faced real construction-labor constraints, and that makes moving labor off the jobsite and into a factory attractive. Instead of a carpenter measuring, cutting, assembling, correcting mistakes, and standing a wall in the weather, you get a digital model to a roll former, automated cutting, panels assembled indoors, then trucked and craned into place. Less site labor, faster build, better quality control, less waste.
And this is the reframe that matters most to me. The interesting comparison was never a steel stud versus a 2×4. It’s this: raw lumber, jobsite cutting, framing, correction, inspection. Versus: digital model, automated manufacturing, labeled components, controlled assembly, rapid installation.
At that point you’re not really competing with lumber anymore.
You’re competing with the productivity of the jobsite.
And that’s a competition an industrialized system can actually win. (More on why the system, not the stud, is the real product in Why Residential Steel Framing Isn’t a Product Yet.)
The United States already has pieces of the same system
The US doesn’t need to invent cold-formed steel construction from scratch. We already have most of the pieces.
We have excellent steel mills. We have roll-forming technology. We have sophisticated CFS engineering. We have builders using steel every day in multifamily and commercial construction. We have software capable of turning a building model into manufacturing data.
What we don’t have is enough of those pieces connected specifically around the detached American house.
That’s the gap I’m interested in.
I don’t think America needs another steel stud manufacturer. I think it needs a better connection between the house on the screen and the house in the ground.
What this changes about how I’m building RSF
For a long time, this industry has framed the question as: how do we get residential steel framing from under 1% of the US market toward 10%? How do we convince American builders to switch?
Australia convinced me that’s the wrong question.
The better question is: how do we make steel the easiest way to build a house?
Those are two very different companies. If the answer is “convince builders to switch,” you’re a salesman pushing uphill against an optimized incumbent. If the answer is “make it the easiest path,” you’re building a system: plans, engineering, material takeoff, roll forming, numbered components, panelization, delivery, installation, inspection, all handled. When those pieces connect, a builder isn’t adopting steel. They’re just building the easy way, and the frame happens to be steel.
That’s the Australian lesson, and it’s the company I’m actually trying to build. Not a cold-formed steel supplier. A residential construction platform.
What I’m not claiming
I’m not claiming Australia is a steel country. It isn’t. Timber still frames most Australian houses, and lightweight timber and steel together are simply the common way to build there. Australia didn’t replace wood. It built a legitimate competing system next to it, and that distinction is the entire point.
I’m not claiming America is about to flip. The wood ecosystem here is enormous, and it works. A change like this takes years, and it happens at the margins first, exactly where it did in Australia: where density, fire, soil, or labor make the old way harder.
And I’m not claiming steel is right for every house or every site. It isn’t, and I’ll be the first to say so when it’s the wrong call.
The thing that grew steel in Australia was never just the steel. It was the stack around it: standards, engineering, supply chain, machines, builder confidence, and familiarity.
That’s the stack I’m assembling, one piece at a time.
Australia already proved the model can work. The question now isn’t whether America can build a house with cold-formed steel.
We already can.
The question is whether we can make it easier to build that house with steel than it is to build it the old way.
That’s the direction I’m working toward.
Frequently asked questions
Does Australia build more homes with steel than the United States does?
As a share of new housing, yes, especially in attached and multi-unit construction. But the picture is often exaggerated. Detached single-family houses in Australia are still framed mostly in timber. Steel’s share is highest in apartments and low-rise multi-unit buildings, where its performance advantages matter most.
How common is steel framing in Australia?
Three reasons, roughly. Australia’s environment (termites, bushfire, reactive soils) makes a durable, non-combustible, termite-resistant frame more compelling. Australia developed recognized standards and design pathways for residential steel framing (the NASH Standard and AS/NZS 4600, both referenced in the National Construction Code) that gave builders a clear route to build with steel. And it built a manufacturing supply chain around steel instead of just selling studs. America, meanwhile, has an enormous, highly optimized wood-framing industry for single-family homes that steel has to compete against.
Is most Australian housing built from steel?
No, and this is commonly overstated. Timber still frames the majority of Australian detached houses. Steel became a legitimate, growing competing system rather than the dominant one, and it’s strongest where density and performance requirements are highest.
What is the NASH Standard?
NASH is the National Association of Steel-Framed Housing. Its standard, “Residential and Low-Rise Steel Framing,” is recognized in Australia’s National Construction Code as an acceptable way to design and build steel-framed homes. NASH reports that after the standard was developed, the steel-framed housing market roughly doubled, from about 7% before 2005 to around 14% by 2015.
What is AS/NZS 4600?
AS/NZS 4600 is the Australian/New Zealand standard for the design of cold-formed steel structures, including light-gauge steel framing. Together with the NASH Standard, it gives Australian steel framing a recognized engineering basis under the National Construction Code.
Why is single-family steel framing still rare in the United States?
Not because of the technology. US cold-formed steel engineering and manufacturing are highly advanced and widely used in commercial, multifamily, and mid-rise construction. The obstacle is that single-family housing has an enormous, deeply optimized wood-framing ecosystem, from sawmills to carpenters to financing, and there’s little pressure on a homebuilder to disrupt a system that already works.
What would it take for steel framing to grow in US single-family housing?
Based on Australia’s experience, probably not persuasion but infrastructure: recognized standards and design pathways, engineering support, a manufacturing and supply chain, and enough builder familiarity that steel becomes a low-risk default instead of an experiment. In short, making steel the easiest way to build a house, not just an alternative way.
