Plain-English, engineering-grounded answers on concrete cancer, house subsidence and underpinning. Start with the signs, understand the causes, then compare methods and costs before you talk to anyone.
A practical way to read a crack in your wall, based on width, direction and behaviour, so you know whether it is harmless or worth an engineer's opinion.
The specific warning signs that a house is subsiding or its footings are moving, and what each one is telling you about the ground below.
Why Australian homes move, from reactive clay soils that swell and shrink with moisture to thirsty trees, leaking pipes and poorly compacted fill.
How Australia's AS 2870 reactive-clay classification works, and what the published geology of each major capital means for the chance of footing movement where you live.
Concrete cancer is corrosion of the steel reinforcement inside concrete. Here is the mechanism, the causes, and where it shows up in Australian buildings.
How concrete cancer is properly repaired, from removing failed concrete and treating the steel to patching, protecting and preventing it coming back.
The main ways a footing is strengthened or re-supported in Australia, how each method works, and the situations each one suits.
Where Australian home insurance typically does and does not cover structural movement and concrete repair, and why you should check your policy first.
A neutral look at Mainmark's Teretek resin injection process, drawn from Mainmark's own published materials: what it is, how Mainmark compares it to traditional underpinning, and where it differs from restumping.
A neutral look at Resinject's RSJ170 resin injection process, drawn from Resinject's own published materials: what it is, how Resinject compares it to traditional underpinning, and what its own cost page does and does not say about price.
A neutral look at what Sydney House Levelling itself publishes: who it is, what it lists among its services, and what its own site says about cost, including three separate guides on its own site that give different figures for the same job.
A neutral look at Buildfix's "stump lifting" approach to restumping and reblocking, drawn from Buildfix's own published materials: what it is, how Buildfix compares it to traditional restumping, and what Buildfix's own pricing pages say about cost.
A neutral look at what WS Remedial Group publishes about itself: who it is, the scale of building it describes itself as working on, and what its own site does and does not say about cost.
A neutral look at what Advanced Ground Solutions publishes about itself: the four services it offers that overlap with this directory, who it says it serves, and what its own site does and does not say about cost.
Realistic Australian price ranges for underpinning and concrete cancer repair in 2025, what drives the cost, and why quotes vary so widely.
Cost, timeline, durability and the situations each one suits, side by side, so you know what to expect before an engineer or contractor recommends a method.
The hiring checks that matter, from licensing and engineering to how a quote should be written, so you back the right contractor for a structural job.
From the first crack you notice through engineer's report, quotes, the works themselves and monitoring afterwards, so you know what a proper job looks like.
How many underpinning and remedial contractors we list today, by state and method, and what this snapshot does not tell you about the wider market.