
In today’s building landscape, every project faces higher expectations tighter regulations, sharper design scrutiny and tougher financial accountability. For builders and developers, the pressure is on to deliver certainty at scale, without compromising design intent or functionality. And behind every successful fitout, the choice of your glazing partner can make all the difference.
It’s here that a well-established name in glazing has become a quiet force behind challenging and high-profile fitouts. With decades of experience, a national presence and dedicated expertise in commercial glass and aluminium framing, the O’Brien Glass Building & Fitout team brings reliability and technical capability.
Precision in motion across Australia
In the heart of Sydney’s CBD, that capability took centre stage at Castlereagh Street – part of the landmark Harry Seidler-designed tower. What started as a straightforward café fitout evolved into a technical showcase: curved glass wrapping interior and exterior walls, integrated LED lighting and seamless visual continuity across a highly visible frontage.
“There were a lot of moving parts; uneven surfaces, tight tolerances and the need to maintain the visual purity of the design,” says Benton Duthie, who leads the national B2B property division at O’Brien. “In projects like this, you need more than technical skill; you need collaboration and ownership. Our role is to make the design work on site without diluting the original vision.”
In Queensland, a similar story unfolded at the Sunco Motors showroom, where O’Brien partnered with Sunstruct to deliver an expansive, light-filled dealership facade that balanced brand presentation with performance. Precision timing, custom fabrication and meticulous installation turned a demanding brief into a flawless finish.
The result? Two very different projects, united by one thing – confidence built on capability.
End-to-end expertise
What sets O’Brien apart is not just what they deliver, but how they deliver it. What ties these projects together is more than aesthetics – it’s a philosophy of delivery built on accountability and precision. From estimation and fabrication through to installation and aftercare, the O’Brien Building & Fitout team provides full-service support.
“Our strength lies in owning the glazing package from start to finish” says Duthie. “We don’t just supply and walk away – we stay involved. From detailed estimates to managing lead times and verifying compliance, we’re there to help things run smoothly. And when changes happen, we work with our clients to help solve them.”
That responsiveness extends beyond the build. With a 24/7 Customer Solutions Centre and a trusted network of subcontractors nationwide, O’Brien provides the scale and agility to meet deadlines, manage disruptions and deliver consistently – across Australia.

Build to last
Behind the glass is a team of specialists working for you – project managers, estimators, glaziers and compliance specialists – all aligned under one national system of quality. Advanced estimation tools and rigorous testing ensure accuracy, efficiency and quality at every stage – with glazing works backed by a Lifetime Workmanship Warranty for the life of the building.
Safety and compliance are treated with the same focus. Each project is assessed through a national risk framework, with a dedicated Technical Standards Manager overseeing documentation, training and on-site practices.
Sustainability and ethical sourcing are also part of the everyday approach. From recycling and responsible material selection to transparent supply chains and compliance with modern slavery legislation, O’Brien ensures each project aligns with responsible business practices.
As the industry faces the legacy of ageing imported glass from past building booms, the O’Brien focus on durability, compliance and long-term performance has never been more relevant.
“Designers and builders are asking smarter questions about glazing,” says Duthie. “Energy efficiency, durability, compliance, aesthetic impact – it all matters. And they want partners who can help them get it right.”
The clear choice
With a trusted nationwide network and a proven record across both complex builds and everyday fitouts, O’Brien Glass Building & Fitout continues to deliver what the market values most: clarity, consistency and control.

To learn more, or plan your next project, call 13 16 16 or visit obrien.com.au

