Will a water damage claim raise my premium?
Every page on this question gives you a percentage and none of them says where it came from. This one does not have a percentage. It has the mechanisms that are actually documented, and the arithmetic that replaces the guess.
Every page you will find on this question gives you a percentage. None of them says where it came from.
We are not going to give you one, because there is no published Australian dataset of premium movements after a home water claim, and inventing a number for a page like this is exactly how the rest of this market ended up worth nothing. What follows is what is actually knowable.
What this page does not contain. A figure for how much a claim raises an Australian home insurance premium. Not because it is uninteresting, but because it was not measured and neither was the one on the page you read before this. Everything below is sourced or is clearly marked as a mechanism rather than a measurement.
What is actually true
Claims history is used, and it attaches to the address as well as to you
Australian home insurance applications ask about claims in a recent period, commonly the last five years, and they ask about claims at the property as well as claims by the applicant. That second part surprises people who have just bought a house. It is also why a declined claim is not automatically neutral: it happened, and the question is usually phrased about claims made rather than claims paid.
The effect is not uniform
Insurers price differently from one another and they weight different things. One claim moves one insurer’s renewal and not another’s. This is the entire basis on which the comparison market operates, and it means “a claim costs you X%” is not a coherent sentence even before you ask where X came from.
Non-renewal is a separate risk from repricing
Renewal is an offer of a new contract. An insurer that no longer wants the risk does not have to make one. In flood-exposed parts of Australia this is a live issue independent of any individual claim, and it is the risk worth thinking about before a second claim rather than a first.
Not claiming has costs too
Paying privately for a large drying job so the claims history stays clean is a decision with a number attached, and the number is usually larger than people expect. Price it before you decide. And bear in mind that undried water produces mould, and mould produces a claim you cannot avoid later — NSW Health, Mould factsheet makes the point that it returns unless the cause is fixed.
Price the job before you decide whether to claim
Free quotes from restoration companies advertising for your postcode. No obligation, and nothing here lodges anything.
Do the arithmetic instead
The decision is not really about premiums, because the premium effect is unknowable in advance. It is about whether the claim is big enough to be worth the excess and the entry on your history. That is arithmetic, and this site publishes the inputs.
| Job | Drying, excluding GST | Worth claiming? |
|---|---|---|
| One room, carpet only, three days | $1,260 | Marginal against a typical excess. Price it and compare. |
| Two rooms, four days | $1,913 | Usually worth it, and that is before anything is replaced. |
| Open-plan living area, five days | $3,449 | Yes. |
| Most of a house, seven days, with HEPA | $8,885 | Yes, and the excess is not the interesting number any more. |
What to do at renewal, which is where this actually bites
If a claim is going to affect anything, it affects the renewal notice rather than the current policy. Three things are worth doing when it arrives, and all three are free.
- Read the schedule, not the total. Insurers move excesses, sub-limits and flood positions at renewal, and a premium that looks unchanged can be sitting on a materially different product. The numbers to check are your excess, your flood excess if there is one, and your mould sub-limit — those three decide what a water claim actually costs you.
- Answer the claims-history question accurately. It usually asks about claims made over a recent period, at the property as well as by you. A non-disclosure is a far worse problem than a claim, because it goes to the contract rather than to the price.
- Shop it, and shop it on the schedule. Insurers weight claims history differently from one another, which is precisely why no single percentage could describe the effect. A quote that is cheaper because it carries a $5,000 flood excess is not cheaper.
And the one to think about before a second claim rather than a first: renewal is an offer of a new contract, and an insurer that no longer wants the risk is not obliged to make one. In flood-exposed parts of Australia that is a live issue independent of anything you personally did.
What you are entitled to see
If a claim is declined or cut back, two Code paragraphs give you the file, and hardly anybody uses them.
General Insurance Code of Practice, paragraph 81 · 2020 Code, October 2023 update, read 20 September 2026
A denial or a part-payment has to come with the aspects not accepted, the reasons, your right to the information relied on, your right to copies of the reports relied on, and the complaints process.
General Insurance Code of Practice, paragraph 82 · 2020 Code, October 2023 update, read 20 September 2026
Copies of the service supplier and external expert reports the insurer relied on, once you ask.
Ask for the reports. In a water claim the decisive document is usually a hydrologist’s report, a plumber’s report or a loss adjuster’s scope, and it is common for it to contain an assumption you can correct — a wrong start time, a wrong water source, a missed second event. You cannot correct what you have not read.
Then, if it still does not resolve: AFCA, how we resolve complaints. It is free to the consumer, it is the scheme the Code obliges general insurers to belong to, and its determinations bind the insurer.
Price the drying before you decide
Free quotes from restoration companies advertising for your postcode. Getting a quote is not lodging a claim and has no effect on your policy.
Your enquiry is ready to send
Here is what happens after you submit:
- Your answers go to restoration companies that advertise for your postcode.
- 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
Does making a claim increase your home insurance premium in Australia?
There is no published Australian figure for how much, and this site does not publish an invented one. What is true is that insurers use claims history in pricing and in deciding whether to renew, that the history follows the address as well as the person, and that the effect is not the same across insurers.
How long does a claim stay on my record?
Insurers commonly ask about claims over the previous five years at application. That is an underwriting question, not a legal retention period, and it differs by insurer. Answer it accurately: a non-disclosure is a far worse problem than a claim.
Is it better to pay for small water damage myself?
Sometimes, and the way to tell is arithmetic rather than instinct. Price the drying first. A one-room, three-day dry on the published rates this site reproduces is a few thousand dollars at most; if your excess is close to that, claiming buys little.
Can an insurer refuse to renew me after a claim?
Yes. Renewal is an offer of a new contract, and an insurer is not obliged to make one. This is a real risk in flood-exposed areas and it is a separate risk from the premium going up.
Can I find out what the insurer relied on?
Yes, and few people ask. Paragraph 82 of the General Insurance Code of Practice requires the insurer to give you the information and the service supplier or external expert reports it relied on, within 10 business days of your asking.
Sources cited on this page
- General Insurance Code of Practice (2020 Code, October 2023 update)
- General Insurance Code of Practice, paragraph 82
- General Insurance Code of Practice, paragraph 81
- AFCA, how we resolve complaints
- Insurance Contracts Regulations 2017 (Cth)
Every figure above was read from the source it is attributed to on 20 September 2026. How we check this.