waterdamagequotesMould after water damage: cover, limits and testing
Mould is never the cause of a loss and always the consequence of one. Every part of how insurers treat it follows from that — including why the sub-limit is so much smaller than you expect.
Mould is not a cause of loss. It is always a consequence of one, and the whole of its insurance treatment follows from that single fact.
An insurer asking about mould is really asking two questions in sequence. What made the building wet? And was that a covered event? If the answer to the second is yes, the mould follows the cover — subject to any limit the policy places on it. If the answer is that the building was wet because it is a badly ventilated bathroom in a Sydney winter, there is no insured event anywhere in the chain and there never was.
The causation chain
| What made it wet | Provision | Mould position |
|---|---|---|
| Burst pipe, dried promptly, mould appeared anyway | reg 19(1)(a)(vi) |
Follows the cover, up to the policy’s mould sub-limit |
| Burst pipe, drying delayed by weeks | reg 19(1)(a)(vi) |
Contested. Expect an argument about whether you took reasonable steps |
| Storm damage to the roof, ceiling cavity stayed wet | reg 19(1)(a)(xiv) |
Follows the cover, sub-limit applies |
| Flood water, porous materials left in place | reg 34(1) |
Follows the flood cover if flood cover was bought. Category 3 scope |
| Slow shower leak over eight months | reg 19(2)(b) |
Usually declined as gradual deterioration |
| Rising or lateral damp | — | Not an escape of water. Not an insured event |
| Condensation, poor ventilation, unflued gas heating | — | Not an insured event. It is a building performance problem |
The middle row is where most real disputes live. The event was covered. The mould came anyway. The insurer says the mould is the result of the drying not being done fast enough and that is on you; you say the delay was the insurer’s assessment process. Both can be partly right, and the documentation from the first week decides it.
This is the practical reason to start drying on day one. It is not that mould appears in 48 hours — it is that a dated, written drying record from day one removes the argument entirely. A restoration company taking daily moisture readings is producing evidence as a side effect.
Where a mould limit is written, and why to read it early
Whether a policy caps what it pays for mould, and at what figure, is a matter of its wording. This site did not read a sample of Australian policies and publishes no typical figure. What is fixed is where to look: the policy and its schedule, and for a home building or contents policy the Key Facts Sheet, which the insurer must keep on its website in a downloadable format (Insurance Contracts Regulations 2017 (Cth) reg 13(4)). You can read the mould wording of two policies without speaking to anybody.
The reason it matters is the shape of the cost. Mould remediation is driven by how much porous material has to come out, and hipages publishes whole-home figures from $500 to $6,000 or more — the mould removal guide breaks that down. If remediation is going to exceed what the policy pays, the question stops being “what will the insurer pay” and becomes “what is the cheapest way to make this building dry and stay dry”.
Ask for mould and drying to be quoted together
Only restoration companies covering your postcode, and only when they are taking enquiries. Remediation without drying the cause is money spent twice.
The testing question, answered by a health department
There is an Australian industry that sells mould testing, and there is a government health department that has published its view on whether you need it. They do not agree, and the health department is the one with no commercial interest.
NSW Health, Mould factsheet · current as at 20 December 2022, read 20 September 2026
“Since most mould is visible, it is generally not necessary to test for mould in the home.” NSW Health qualifies it: contamination can sit in cavities or the ceiling, and surfaces have to be inspected to find the extent. Where you cannot find the source, it points to an occupational hygienist.
Read the qualification carefully, because it is not a blanket “never test”. NSW Health accepts that contamination may be in cavities or the ceiling, that indoor surfaces need inspecting to determine the extent, and that where you cannot find the source of the problem an occupational hygienist can help. What it does not accept is that an air sample test is a routine first step for visible mould.
Mould testing sets the other health departments’ positions beside this one.
Which is worth knowing when a quote arrives with a $250–$300 air sample test on it as a line item. Sometimes that is the right call. Often, on visible mould in a room you can see, it is not.
Cleaning it is a separate question from claiming it
How to clean mould — NSW Health’s methods material by material, what a professional removal involves, and what it costs — is on the mould removal guide. For the claim, one sentence from the same health department matters more than any method:
NSW Health, Mould factsheet · current as at 20 December 2022, read 20 September 2026
Which is why a drying record matters more than a surface clean, and why an insurer that has paid to dry a building properly is not usually arguing about the mould that did not grow.
Surface cleaning a mouldy wall in a building that is still wet is a two-week solution, and an insurer looking at mould that came back will ask what was done about the moisture. The drying record is the answer to that question, which is why it matters more to the claim than who wiped the wall.
The prevention list, from the same source
NSW Health’s own list of actions that reduce dampness, reproduced because it is the most practical thing any Australian government has published on this:
- Run exhaust fans when bathing, showering, cooking, doing laundry and drying clothes.
- Open windows when the weather allows, to improve cross ventilation.
- Limit humidifiers, fish tanks, indoor plants and unflued gas heating.
- Repair water leaks and plumbing problems — burst pipes, a leaking roof, a blocked gutter.
- If water enters the home, completely clean and dry water-damaged carpets and building materials, and discard what cannot be cleaned and dried completely.
- For rising or lateral damp, keep weep holes and subfloor vents clear and get a building consultant to look at the damp course.
Note the fifth one. “Completely clean and dry” is doing all the work, and it is the difference between a restoration company with moisture meters and a fan from the hardware shop.
Ask for mould remediation to be quoted
Only restoration companies covering your postcode, and only when they are taking enquiries. Ask each of them what they will do about the cause, not just the surface.
Your enquiry is ready to send
Here is what happens after you submit:
- Your answers go only to restoration companies covering your postcode, and only when they are taking enquiries.
- No more than three of them may contact you, using the details you gave.
- You decide who, if anyone, you use. You are committed to nothing, and this does not lodge, alter or affect an insurance claim.
We are not a restoration company and we do not attend, assess or repair anything.
Common questions
Can you claim mould damage on insurance?
Mould is a consequence, not one of the listed events, so the claim turns on what made the building wet. Mould following a burst pipe (reg 19(1)(a)(vi) of the Insurance Contracts Regulations 2017) or a storm can be part of that claim, subject to any mould limit in the policy. Condensation is not a listed event, and a slow leak is where the wear and tear exclusion in reg 19(2)(b) comes in.
Is mould covered by home insurance in Australia?
Mould resulting from a covered event -- a burst pipe that was dried properly but not quickly enough -- follows that event's cover, subject to any limit the policy puts on mould; the policy wording and its Key Facts Sheet say whether there is one. Condensation, poor ventilation and long-standing damp are not among the events listed in reg 19(1) of the Insurance Contracts Regulations 2017, so mould from them has no insured event behind it.
Should I get mould testing done?
NSW Health's position is that since most mould is visible, it is generally not necessary to test for mould in the home. It qualifies that: contamination can sit in cavities or the ceiling, and surfaces need to be inspected to find the extent. Where you cannot find the source, it points to an occupational hygienist.
Can carpet be saved after mould?
NSW Health says absorbent materials such as carpet may need to be professionally cleaned or replaced once mould-contaminated. Which of the two depends on the category of the water, how long it was wet, and what the underlay did.
I rent and there is mould. What can I do?
NSW Health's guidance is that if you have ensured the building is properly ventilated and mould is still growing, raise it with the owner or agent, and it points tenants to NSW Fair Trading for their rights. Equivalent consumer agencies exist in every state.
Sources cited on this page
- NSW Health, Mould factsheet
- Insurance Contracts Regulations 2017 (Cth)
- General Insurance Code of Practice (2020 Code, October 2023 update)
- NSW Health, Mould factsheet
Every figure above was read from the source it is attributed to on 20 September 2026. How we check this.