Building Repairs in Wollongong

  • Licensed & Insured
  • Family business for over 168 years
  • Affordable, Quality Work

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Wollongong Building Repairs

At Knobel Builders, we understand how frustrating building issues can be—especially when they affect your safety, comfort or peace of mind. From structural wear and tear to water damage and cracking walls, we’ve helped countless homeowners and property owners across Wollongong get things back on track. We bring decades of hands-on experience to every job, offering expert advice and efficient repairs that last.


Our team knows how to pinpoint the cause of a problem, not just patch it over, so you can feel confident the issue won’t come back in six months. Whether it’s a leaking ceiling, damaged wall or failing retaining wall, we show up on time, explain your options clearly and work with minimal disruption.


We’re here to make your building repairs simple, stress-free and long-lasting. If you’d like a quote or need help fast, give us a call on 0417 286 971.

Reliable Repairs Backed by Experience

We’ve built our reputation on doing repairs properly—the first time. Whether you’re dealing with ageing materials, water leaks, or concrete corrosion, we take the time to assess the problem, recommend a solution, and carry it out to the highest standard.


As a family business with over 168 years of building experience in Australia—spanning three different centuries—we understand the value of workmanship that stands the test of time. Having been in the same local area for around 120 years, much of our work comes through word-of-mouth, which we see as a reflection of the trust we’ve earned over generations.


From small residential jobs to larger remedial work, we focus on providing cost-effective repairs that won’t let you down in the long run. We know what’s worth fixing, what needs replacing, and how to make it all blend in with the existing structure so your property looks good as new. Get in touch to talk through your project—we’re always happy to help.

A Room With a Ceiling That Has a Hole in It — Knobel Builders In Balgownie, NSW
A Close Up of a Ceiling With a Wooden Frame and a Hole in It — Knobel Builders In Balgownie, NSW
A Piece of Concrete is Sticking Out of a Hole in a Wall — Knobel Builders In Balgownie, NSW
A Room With a Radiator and a Wall With Mold on It — Knobel Builders In Balgownie, NSW

Providing Remedial Work

We often work on retaining walls that have started to fail due to poor drainage, soil movement or ageing construction. We’ll inspect the issue and either reinforce or rebuild the structure to ensure it's safe and effective.

Fixing Concrete Cancer

If you’ve noticed rust stains, cracking or spalling in your concrete, it could be concrete cancer. We’ll assess the damage and treat it properly to prevent further spread and restore strength to the area.

A Person is Holding a Spatula and Plastering a Wall — Knobel Builders In Balgownie, NSW
A Person is Plastering a Wall With a Trowel — Knobel Builders In Balgownie, NSW
A Plumber is Fixing a Leaking Sink Pipe With a Wrench — Knobel Builders In Balgownie, NSW
A Puddle of Water on the Floor in a Basement Next to a Door — Knobel Builders In Balgownie, NSW

Addressing Water Leaks

Water damage can sneak up quickly—whether it’s coming from a damaged roof, window frame or plumbing issue. We’ll trace the source, repair the structure and make sure your home is protected from future leaks.