What do the Colosseum, Roman aqueducts, and your next new home have in common?
If you ask Stephan Van der Walt, founder of Walt Construction and former pro rugby player turned Sunshine Coast custom builder — they all should be built to last for centuries.
“There are Roman homes still standing,” he told The Good Builder.
“Are we building homes that will last even 100 years?”
A Legacy Mindset Most Builders Overlook
Most home builders today are fighting on the frontline of rising costs, material delays and client demands. But while others are rushing through jobs, Walt Construction is quietly building homes designed for the long haul — not just the next few years, but the next few generations.
Stephan doesn’t believe in quick wins. He believes in legacy homes — the kind your kids could one day inherit, and still find in great shape.
“You either pay for it upfront, or you pay for it later,” he said. “Especially around here in Noosa — you can tell straight away which homes were built cheap. They just don’t last.”
Thick Concrete, Deep Trust
Walt Construction’s recent renovation of a beachfront home is a perfect case in point.
The job involved stripping the entire structure back to thick concrete slabs — a painstaking task that took weeks to cut through. But for Stephan, it was a builder’s dream.
“That concrete? Took us ages to get through. But I knew — this thing is going to last forever.”
That one detail says everything about his approach: durability first. Sustainability not just in terms of planet, but in terms of permanence.
Sustainability Isn’t Just About Green Products
There’s a misconception in the industry that sustainability means solar panels and recycled cabinetry. But Stephan challenges that idea head-on.
“I love working with concrete. It’s not the greenest material when it comes to manufacturing — but it lasts. That’s sustainable too.”
For Walt Construction, sustainability means choosing materials and building methods that don’t need replacing every 10 years. It’s about homes that weather the salt air, survive the storms, and don’t rot in five years because a spec builder took shortcuts.
Innovation? We’ve Had the Tools for Years
The real kicker?
The innovations that could create better, longer-lasting homes already exist — we’re just not using them enough.
“Ten years ago I used a product called EcoBlock — it’s like a polystyrene block you core-fill with concrete. Amazing stuff. But most builds today are still just blockwork.”
The reluctance to try new materials, suggest alternatives, or even question outdated specs isn’t a supply chain problem. It’s a mindset problem.
“Architects draw what they’re used to. Builders don’t push back. Engineers follow the brief. But if someone just starts the conversation — often, a better material ends up in the build.”
What Home Builders Can Take from This
If you’re a home builder reading this, here’s the takeaway:
- Think beyond the handover. Ask yourself: will this home still stand proud in 100 years?
- Be bold enough to question the plan. Your experience might be what saves a client from a costly decision.
- Build trust through transparency. Show your client the long-term value, not just the short-term budget win.
“If the materials aren’t right — or the waterproofing fails — it’s not just the house that suffers. Your reputation does too.”
And in tight-knit markets like the Sunshine Coast, reputation is everything.
Builders Who Build for the Long Haul, Win the Long Game
Walt Construction isn’t the biggest builder in Queensland. But they’re one of the few who still show up years after handover to ask, “How’s it living?”
And that’s what sets them apart.
“I think a good builder looks at the long term. The relationships need to last. And so do the homes.”
Are You a Builder Thinking 100 Years Ahead?
At The Good Builder, we spotlight the people and businesses lifting the standard across Australian construction.
If you’re building homes that are made to last — in structure, design or legacy — we want to hear your story.
📩 Get in touch at thegoodbuilder.com.au and let’s tell Australia what good building really looks like.
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