Water damage claim denied? Why it happens and how to challenge it

Water damage claims are most often denied because the insurer says the damage was gradual, caused by wear and tear or poor maintenance, happened while the home was empty, or was reported late. A denial is not final. Ask for the reason in writing, answer it with evidence, complain, then go to the Financial Ombudsman.

Why water damage claims get denied

Insurers refuse water damage claims for a small number of reasons, and each one needs a different answer. Find the reason in the insurer's letter before you do anything else, because the evidence that overturns one refusal does nothing for another.

A refusal is not always the only problem worth challenging. If the insurer has gone quiet rather than said no, unreasonable delay is a complaint in its own right. If it has paid but cut the figure for a low sum insured, that is reduced for underinsurance.

The insurer says the damage was gradual

This is the most common refusal on escape of water claims. Home insurance covers sudden, accidental escapes of water, and most policies exclude damage that builds up over time, such as a slow drip under a shower tray.

Who has to prove what matters here. If the insurer relies on a gradual damage exclusion to decline the claim, the Financial Ombudsman Service says the insurer "must prove that it's fair and reasonable for it to rely on this policy term to decline the claim". If the Ombudsman is not satisfied the insurer has shown the damage happened gradually, it is likely to tell the insurer to accept the claim.

Genuine gradual damage is not always the end either. The Ombudsman may still tell an insurer to pay where the damage came from an insured event such as escape of water, the leak was hidden (for example behind a kitchen unit or bath panel) so you could not reasonably have known about it, and you claimed as soon as you could. Our guide to gradual damage and wear and tear refusals goes through those tests in detail.

The insurer says it was wear and tear or poor maintenance

Insurance does not pay for things wearing out. The Ombudsman is unlikely to support a complaint about genuine wear and tear because, in its words, "everything wears out eventually and insurance can't protect you from that".

The dispute is usually about what failed and how. A pipe joint that has been weeping for months is wear and tear. A joint that failed suddenly and flooded a kitchen is an escape of water, even if the pipe was old. A plumber's or leak detection report describing a sudden failure is the evidence that separates the two.

The insurer says no insured event happened

Sometimes the insurer does not accept that an insured event caused the damage at all. Here the position flips: the Ombudsman says it is down to you, as the policyholder, "to show the damage was likely caused by an insured event".

Insurers often investigate this themselves by sending a surveyor or leak detection firm. You can commission your own report, but the Ombudsman notes its cost may not be covered, so tell the insurer about the damage first and ask what it plans to investigate.

The home was unoccupied

Most home policies drop cover for escape of water once a property has been empty for a set period, which the Ombudsman says is usually 30 or 60 days. Policies rarely define "unoccupied", and the Ombudsman may treat a home as still occupied if you visited it reasonably often, even if nobody slept there.

If the damage happened in the first 30 days of the home being empty, the Ombudsman says it will usually tell the insurer to settle the claim. It is unlikely to help if the property was abandoned or neglected, or if you misrepresented the situation when you took out or renewed the cover.

You reported the damage late

Policies ask you to report damage promptly. A delay is a stronger reason to refuse when it made the damage worse, or when the evidence of the cause had gone by the time the insurer could look. Where the delay changed neither, ask the insurer to explain in writing what the delay affected. FCA rules require insurers not to unreasonably reject a claim.

You broke a policy condition

Policies carry conditions, such as keeping the heating on in cold weather or turning the water off when the home is empty. Breaking one does not automatically let the insurer refuse the claim.

Under section 11 of the Insurance Act 2015, where a term is meant to reduce the risk of a particular kind of loss, the insurer cannot rely on a breach if you show the breach could not have increased the risk of the loss that happened. A missed burglar alarm condition, for example, has nothing to do with a burst pipe. For other conditions on policies taken out since August 2017, FCA rules say rejecting a consumer's claim for a breach is unreasonable unless the circumstances of the claim are connected to the breach.

The insurer says you gave it wrong information

An insurer may refuse a claim if information you gave when buying the policy was wrong, for example about the property's condition. The law expects you to "take reasonable care not to make a misrepresentation" (Consumer Insurance (Disclosure and Representations) Act 2012). Under FCA rules, a mistake made while taking reasonable care is not a fair reason to reject a claim.

What the rules say an insurer must do

The FCA's claims handling rule, ICOBS 8.1.1, says an insurer must:

• handle claims promptly and fairly
• give reasonable guidance to help you make a claim, and information on its progress
• not unreasonably reject a claim
• settle claims promptly once settlement terms are agreed

Measure a refusal against those four duties. If the letter gives a vague reason, does not quote the policy term it relies on, or ignores evidence you sent, say so when you challenge it.

Is a denial final?

No. A refusal is the insurer's decision, and many of them get tested. Claim decline was the top reason people took buildings insurance complaints to the Financial Ombudsman, at 41% of cases in the quarter it reported in August 2024. In 2025/26 the Ombudsman upheld 38% of the buildings insurance complaints it resolved, against 30% across all financial products (buildings insurance complaint outcomes).

Refusals are also common in the first place: of home, travel and motor insurance, home has the lowest claims acceptance rate, 62-71% against 99% for motor, though the FCA warns firms report it inconsistently.

How to challenge a denied water damage claim, step by step

1. Get the reason and the policy wording in writing. Ask the insurer to name the exclusion or condition it relies on and quote the wording. A refusal given over the phone is hard to challenge.
2. Match your evidence to that reason. Use the table below, and send one organised pack of evidence rather than a drip of attachments.
3. Put your challenge in writing. Say which decision you disagree with, why, and what evidence supports you. Ask the insurer to reconsider and to reply by a set date.
4. Make a formal complaint if it will not move. Use the word "complaint". The insurer then has up to eight weeks to send its final response.
5. Take it to the Financial Ombudsman Service. If the final response does not put things right, or eight weeks pass without one, you can refer the complaint for free. You usually have six months from the final response. Our guide to taking it to the Financial Ombudsman covers each stage.
6. Consider independent help on a larger claim. A loss assessor works for you, not the insurer, and can take the dispute on.

• Gradual damage: a plumber's or leak detection report on how the failure happened, photos of the failed part, and the date you found the damage
• Wear and tear or maintenance: a report describing a sudden failure, service or repair records, and the age and condition of the part
• No insured event: a report linking the damage to the escaped water, with photos and video from the day
• Unoccupied home: the dates you were away, evidence of visits, and the policy's own definition if it has one
• Late reporting: when and how you found the damage, and why it could not have been found sooner
• Breach of a condition: the condition's wording, and evidence the breach had nothing to do with how the loss happened

What not to say to your insurer

Honesty protects your claim, and so does precision. The problems start when a policyholder guesses.

• Do not guess the cause or how long it was leaking. "It might have been dripping for a while" can become the basis for a gradual damage refusal. Say what you saw, when you found it, and what you did.
• Do not agree to a description you dispute. If a loss adjuster calls it wear and tear on a call, say you disagree and ask for the reasons in writing.
• Never exaggerate the claim. Under the Insurance Act 2015, if you make a fraudulent claim the insurer is not liable to pay it, can recover money already paid, and can treat the policy as ended from the time of the fraud.
• Do not rely on phone calls. Follow each call with an email confirming what was said.

Mistakes that make a denial harder to overturn

• Throwing away the failed part. A split hose or cracked fitting is often the best evidence of a sudden failure. Keep it.
• Repairing before the insurer has seen the damage. Stop the water and make the home safe, but photograph everything and ask the insurer before permanent repairs.
• Accepting the first answer. Many refusals rest on an assumption about the cause that nobody has tested.
• Missing the deadline. The six-month window for the Ombudsman runs from the insurer's final response.
• Arguing the wrong point. Evidence that the damage is expensive does not answer a gradual damage refusal. Evidence about the cause does.

Is it worth challenging a refused claim?

Often, but not always. The case is strongest when:

• the leak was hidden and you reported it as soon as you found it
• a professional report points to a sudden failure
• the damage happened within the first 30 days of the home being empty
• the refusal relies on a condition that has nothing to do with the loss
• the insurer has not explained its reason or quoted the policy wording

It is weaker where a part had plainly worn out and been left, or where the damage costs less than your excess. Escape of water often carries a higher excess than other claims, so check the figure before you spend weeks on a small one.

When a loss assessor can help

On a larger claim, roughly £10,000 or more, a loss assessor can take the whole dispute on: reviewing the refusal, commissioning reports, handling the insurer and pushing for the settlement you are owed. A loss assessor acts for the policyholder, unlike the loss adjuster the insurer appoints. Read more on high-value water damage claims.

Common questions