Three years ago, a Sydney builder discovered that the staircases in their $12 million apartment development didn’t meet NCC requirements. The riser heights were inconsistent by just 8mm—a seemingly minor detail.
But minor turned into major fast. They faced a stop-work order, a complete reinstall, and a six-week delay that cascaded through the entire project timeline. The financial hit was one thing. The reputational damage was another.

This isn’t a cautionary tale designed to scare you. It’s a reality check that highlights why compliance isn’t just a box-ticking exercise, it’s the foundation of every successful build.

The 8mm variance? That’s the difference between Part 3.9.1.2’s allowable 5mm tolerance between adjacent risers and what actually happens when quality control slips. It seems minor until you’re explaining to a certifier why your staircase doesn’t meet Performance Requirement.

Compliance is about People, not paperwork.

When we talk about the National Construction Code, it’s easy to think of it as bureaucratic red tape. But strip away the technical language, and the NCC is fundamentally about one thing: keeping people safe.

Every balustrade height requirement exists because someone, somewhere, fell.
Every fire-rating specification was written in response to a tragedy. The NCC represents decades of learned lessons, and compliance is how we honour that knowledge.

For builders and developers working on multi-unit residential projects or commercial developments, compliance protects the people who will live and work in those spaces for years to come. It also protects your business from the legal and financial fallout when something goes wrong.

The Hidden Cost of Non-Compliance.

Most project managers understand that non-compliance can lead to rework.
What’s less obvious is how quickly those costs compound.

Consider the domino effect: a non-compliant staircase identified during inspection doesn’t just mean replacing the stairs. It means stopping work on that section of the build. It means coordinating trades around the delay. It means explaining to stakeholders why the timeline has shifted. It means potential penalties from certifiers. And if the issue isn’t caught until after handover, it means lawsuits, rectification under warranty, and a reputation that takes years to rebuild.

We’ve seen projects where a single non-compliant component created a six-figure problem. Not because the component itself was expensive, but because of the cascading delays and coordination challenges it triggered.

First Time Right, On Time, On Budget.

At Apexa Systems, we’ve built our reputation on a simple philosophy: first time right, on time, on budget. That’s not marketing speak, it’s a commitment that starts with compliance at every stage of design and manufacture.

We use the Toyota Production System principles to build quality into the process, not inspect it in at the end. That means every staircase and balustrade we manufacture is designed to meet or exceed NCC requirements before it ever leaves our facility in Canberra.

Why does this matter for your project? Because when components arrive on-site already compliant, you eliminate one of the biggest sources of delay and rework in modern construction. Your certifier signs off. Your trades keep moving. Your timeline stays intact.

The NCC Is Your Friend, Not Your Enemy.

Many builders treat the NCC as an obstacle to navigate. We see it differently. The NCC provides clarity. It removes ambiguity. It gives everyone on the project, from architect to installer, a shared language and a common standard.

When you work with suppliers who understand and embrace NCC compliance, you’re not just buying a product. You’re buying certainty. You know that the stairs will pass inspection. You know that the balustrades meet Australian Standards. You know that when the certifier arrives, there won’t be any surprises.

That certainty is invaluable on complex multi-million dollar builds where every day of delay costs money and every defect creates risk.

Australian Standards Are Non-Negotiable.

Australia has some of the most rigorous building standards in the world, and for good reason. Our climate, our construction methods, and our legal framework all demand it.

As a family business with 40 years of experience, we’ve seen standards evolve. We’ve adapted our processes to not just meet but anticipate regulatory changes. That institutional knowledge means we can guide project managers through compliance questions before they become problems.

What Compliance Looks Like in Practice.

Compliance isn’t abstract. It shows up in precise, measurable details that protect both people and projects.

For stairways, Part 3.9.1.2 of the NCC is unambiguous. Risers between 115mm and 190mm. Goings between 240mm and 355mm. The slope relationship (2R+G) must fall between 550mm and 700mm. And here’s where it gets interesting: goings and risers are considered “constant” only if adjacent measurements don’t vary by more than 5mm, and the largest and smallest within a flight don’t exceed 10mm difference.

These aren’t arbitrary numbers. They’re the result of decades of research into human biomechanics, fall prevention, and safe movement through buildings. When someone trips on a staircase, it’s almost always because these tolerances weren’t met.

The details extend beyond dimensions. Riser openings can’t allow a 125mm sphere to pass through. Flights must have between two and 18 risers. And if your stairway connects more than three storeys or exceeds 10m in height, treads must be solid construction, not mesh or perforated material.

Every one of these details matters. Every one protects your project. And every one is easier to get right the first time than to fix later.

When you partner with manufacturers who build compliance into their workflow, you’re not paying extra for quality, you’re investing in risk mitigation.

You’re choosing to avoid the Sydney builder’s nightmare scenario. You’re choosing to protect your timeline, your budget, and your reputation.

The Bottom Line

Compliance isn’t a burden. It’s insurance. It’s the difference between a project that flows smoothly from foundation to handover and one that’s punctuated by stop-work orders, rework, and difficult conversations with stakeholders.

The National Construction Code exists to keep people safe and to create a level playing field for Australian builders. When you embrace it, when you partner with suppliers who understand it and build to it, you’re setting your projects up for success.

At the end of the day, compliance is about delivering buildings that work as intended, that keep people safe, and that stand the test of time.

That’s not just good business. That’s the right way to build.

Let’s build something exceptional — together.
Contact the Apexa team to start your next staircase or balustrade project with confidence.