Is subsidence and concrete cancer covered by home insurance?
Where Australian home insurance typically does and does not cover structural movement and concrete repair, and why you should check your policy first.
This is the question every homeowner asks the moment they suspect a footing problem, and the honest answer is: sometimes, but often not, and it depends heavily on the cause and your specific policy. Insurance turns on why the damage happened, so the same crack can be covered on one policy and excluded on another. Read the Product Disclosure Statement (PDS) before you assume anything, and speak to your insurer early.
What is often excluded
Standard Australian home building policies commonly exclude damage that happens gradually or from an inherent condition. That tends to catch the most common causes of subsidence: reactive clay soil swelling and shrinking with the seasons, movement from tree roots, gradual settlement, poor original construction or footing design, and lack of maintenance. Wear and tear and pre-existing damage are also typically excluded. Because so much Australian footing movement is slow and soil-driven, a large share of subsidence claims fall outside cover for these reasons.
What may be covered
Cover is more likely when the damage is sudden and caused by a specific insured event named in your policy. As one worked example of how this is written, Suncorp's own published policy explainer states it excludes "erosion, vibration, subsidence, landslip, landslide, mudslide, collapse, shrinkage, or any other earth movement" as a general rule, but lists flood, storm, storm surge, earthquake and tsunami, escape of liquid and explosion as the specific insured events under which it will still cover landslide or subsidence. Other insurers structure the same distinction differently, so treat this as one example of the pattern rather than a universal rule; the distinction itself, sudden and named versus gradual, is the constant.
How to approach a claim
Concrete cancer follows the same logic and is frequently treated as gradual deterioration, so it is often not covered on a standard policy, though the strata or building context matters for apartments. Whatever the cause, the practical steps are the same. Document the damage with dated photos as soon as you notice it, report it to your insurer promptly rather than after months of monitoring, and get an independent structural engineer's report on the cause, because the cause is what the claim turns on. Moneysmart, the Australian Government's financial guidance service, puts the PDS point directly: "To find out what isn't included, you may need to read the product disclosure statement (PDS)." Do not assume you are covered, and do not assume you are not; confirm it in writing against your own PDS.
Common questions
Does home insurance cover concrete cancer?
Usually not on a standard policy, because concrete cancer develops gradually and is generally treated as deterioration or an inherent condition rather than a sudden insured event. There can be exceptions depending on the cause and, for apartments, the strata policy. Always check your specific Product Disclosure Statement and ask your insurer in writing.
My footing moved because of a burst pipe. Am I covered?
You are more likely to be covered when damage results from a sudden escape of liquid, such as a pipe that suddenly bursts, than from gradual leaking or soil movement, but it depends on your policy terms. Report it quickly, keep dated evidence, and get an engineer's report identifying the cause, because the cause determines the outcome.
Is subsidence covered by home insurance in Australia?
Generally not when it develops gradually, for example from reactive clay soil, tree roots or long-term settlement, because standard policies exclude gradual earth movement. It can be covered when it results from a specific insured event named in your policy, such as a sudden burst pipe, storm or flood. Suncorp's own published policy wording is one concrete example of this split: it excludes subsidence and earth movement generally, but covers subsidence caused by flood, storm, storm surge, earthquake and tsunami, escape of liquid, or explosion. Insurers structure this differently, so check your own Product Disclosure Statement rather than assuming either way.
Sources
- Moneysmart (Australian Government), Choosing home insurance
- Suncorp, Ground movement (home insurance explained)
General information only. Confirm details for your property with a licensed structural engineer.
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