Who We Are
About Onyx Build Group
At Onyx Build Group, we believe a home is more than a structure — it is a reflection of the people who live within it, their stories, their values and the way they want to experience life.
With over two decades of experience in the building industry, we specialise in bespoke residential spaces where thoughtful design, quality workmanship and lasting value come together.
Our philosophy is simple: build with integrity, communicate openly and create spaces that are made to last — not only in their structure, but in the experiences and memories they hold.
Onyx represents strength, refinement and timeless value. These principles shape the way we work and the standard we bring to every project.
We don’t just build houses. We create spaces that become part of people’s stories.
Our Approach
Founded by Brad van Deventer, Onyx Build Group was built on a passion for quality construction, honest relationships and a hands-on approach to every project.
Brad brings practical experience across a wide range of residential builds, with a strong understanding of how to balance design intent, technical requirements, craftsmanship and the realities of construction.
From the early planning stages through to completion, every project is carefully managed with personal involvement, clear communication and attention to detail.
The goal is to make the building process feel straightforward, well managed and collaborative, while delivering a finished result that reflects the client’s vision and meets the highest standards of workmanship.
What We Do
Building from the ground up
Onyx Build Group specialises in high-quality construction projects, from complete new builds to major renovations and professional building work.
New Builds
Complete residential and large-scale building projects managed from planning through to completion.
Major Renovations
Extensive renovations and structural transformations that improve how an existing property looks, functions and feels.
Repairs and Building Work
Professional repairs, alterations and general construction work completed with care and attention to detail.
Why Onyx
A better building experience
A successful build depends on more than the finished result. It requires careful planning, reliable coordination and clear communication throughout the project.
- Personal involvement from Brad
- Clear and consistent communication
- Careful project coordination
- Reliable and experienced trades
- Strong attention to detail
- Commitment to excellence
Our aim is to deliver exceptional workmanship while making the building process as clear, well managed and straightforward as possible for the client.