# DP-P05-H-K: The insurer says a leak in my first home was caused by maintenance, but I had no idea it was there. Can I challenge that?
Collected 11 October 2026
[Home and contents insurance study](https://nzbrands.ai/research/insurance/home-contents-insurance)
## ChatGPT
Answer ID: 6e23b393-5436-4dc3-94ab-e18a9d261ad3
Yes, you can challenge it. An insurer saying a leak was caused by “maintenance” does not automatically end the matter — the key questions are **what caused the leak, what your policy covers, and whether the insurer has enough evidence to rely on an exclusion**. [Financial Ombudsman](https://www.financial-ombudsman.org.uk/consumers/complaints-can-help/insurance/home-insurance?utm_source=chatgpt.com)
In New Zealand, you can ask the insurer to reconsider the decision. Your strongest points are usually:
- **You did not know about the problem:** Explain that the leak was hidden or not reasonably detectable and that you had no knowledge of any defect or deterioration.
- **Ask them to prove the cause:** Request the assessor’s report, photos, moisture readings, plumber’s report, and the specific policy wording they are relying on.
- **Challenge the “maintenance” conclusion:** Ask what evidence shows the leak was due to a failure to maintain rather than a sudden or unexpected event.
- **Check the exact exclusion:** Insurers can decline claims where damage is excluded (for example, gradual deterioration or lack of maintenance), but they need to apply the policy wording fairly. [Consumer Protection](https://www.consumerprotection.govt.nz/help-product-service/managing-money/insurance?utm_source=chatgpt.com)
- **Provide your own evidence:** A report from a plumber or building professional may help if it gives an alternative explanation for the leak’s cause.
A useful way to frame your complaint is:
> “I dispute the conclusion that this damage resulted from maintenance failure. I was not aware of any leak or defect before the event, and I request evidence supporting the cause determination, including the expert assessment and the policy clause relied upon.”
If the insurer does not change its position, make a **formal complaint** through its internal complaints process. If it remains unresolved, you can take it to the insurer’s independent dispute resolution scheme, such as the Insurance & Financial Services Ombudsman Scheme or another scheme your insurer belongs to. These services are free for eligible complaints. [Consumer Protection](https://www.consumerprotection.govt.nz/help-product-service/managing-money/how-to-complain-about-your-financial-service-provider?utm_source=chatgpt.com)
A few details would help assess your position:
1. Was the leak **inside a wall/ceiling/underfloor** or was it visible?
2. Did the insurer say **“gradual damage,” “wear and tear,” “lack of maintenance,”** or something else?
3. Was this your **home insurance claim after buying your first home**, and how long had you owned the house before the leak was found?
## Gemini
Answer ID: a866eba0-611d-4692-bb74-35bf45acf729
Yes, you can challenge the insurer's decision. It is common for insurers to initially deny claims involving leaks by citing "lack of maintenance" or "gradual damage". However, the fact that you genuinely **had no idea the leak was there** is a critical factor in your favor.
### 1. Understand the Insurer's Position vs. Your Rights
* **The "Gradual Damage" Hurdle:** Standard New Zealand house insurance policies cover sudden, accidental, and unforeseen damage. They typically exclude "gradual damage" (rot, mildew, or deterioration that happens slowly over time) because homeowners are expected to maintain their properties.
* **The "Hidden Leak" Exception:** Many New Zealand insurance policies include a **hidden gradual damage extension** or benefit. This specifically provides limited coverage (often between $2,000 to $5,000) for damage caused by a leaking internal water pipe or waste disposal pipe that **could not have been reasonably discovered** by the homeowner.
* **The Definition of "Maintenance":** An insurer cannot reasonably expect you to detect a leak hidden inside a wall cavity, under a floor, or behind cabinetry where routine visual checks are impossible.
### 2. Steps to Challenge the Decision
Ask your insurer for a written explanation of their decision, specifically referencing the exact clause and exclusions they are relying on. Review your policy document to check for a "hidden water leak" or "gradual damage extension" section.
Collect builder, plumber, or leak-detection reports. If a professional can verify that the leak was entirely hidden (e.g., behind a wall lining or beneath a floor) and could not have been spotted during standard, reasonable home maintenance, submit this evidence to the insurer.
If they maintain their declination, lodge a formal complaint through your insurer's **Internal Dispute Resolution (IDR)** process. Clearly outline why you believe the exclusion does not apply—emphasizing that the leak was hidden, you exercised reasonable care as a homeowner, and you reported/claimed it as soon as it became apparent.
If the insurer upholds their decision through their internal process, you can take your complaint to the **Insurance and Financial Services Ombudsman (IFSO Scheme)**. This service is entirely independent, free for consumers, and its final decisions are binding on the insurer up to $500,000.
---
> **Tip:** First home buyers are often held to an unfair standard where insurers label any pre-existing minor wear as "accumulated lack of maintenance." Pushing back with proof that the defect was latent or hidden can successfully overturn these initial declination letters.
## AI Overviews
Answer ID: 05513589-43e6-4e0e-bead-eeab61031409
**Yes, you can absolutely challenge your insurer's decision.** In New Zealand, insurance policies cover **sudden and accidental events** , but generally exclude **gradual damage** caused by a lack of maintenance. However, the fact that you had no idea the leak existed actually works in your favor for a specific type of coverage.
Here is what you need to know to challenge the decision:
1\. Check for "Hidden Gradual Damage" Cover
Most comprehensive New Zealand house policies (such as those from AA Insurance, AMI, Tower, or AMP) include a specific policy extension called **Hidden Gradual Water Damage**.
* **What it covers:** This extension is specifically designed for slow, undetected leaks behind walls, under floors, or in ceilings that you could not reasonably see.
* **The limits:** If your policy has this, it will typically pay out between **$2,000 and $5,000** (sometimes up to $10,000) to fix the resulting damage (like rotted timber or ruined drywall), though it usually won’t cover the cost of fixing the plumbing pipe itself.
* **The argument:** If the insurer is denying the entire claim based on a "maintenance exclusion," review your policy wording. If the leak was hidden and from an internal pipe, argue that it should be covered under this extension.
2\. The Burden of Proof is on the Insurer
To deny a claim completely based on a maintenance exclusion, the insurer cannot just guess. They must **prove** that the damage was caused by your failure to maintain the property.
* Because this is your **first home** , you can argue that you have not owned the property long enough to have caused the issue through neglect, or that the issue was completely invisible during standard home care.
* * *
Step-by-Step Guide to Dispute the Claim
1. **Request the Assessor’s Report:** Ask your insurer for a full copy of their assessor’s or plumber’s report, as well as the exact wording of the clause they are using to decline you. You are legally entitled to see this evidence.
2. **Get an Independent Opinion:** Have a licensed plumber or builder inspect the leak area. Ask them to provide a brief written statement confirming that the leak was **hidden from view** and could not have been detected by regular maintenance.
3. **Lodge an Internal Dispute (IDR):** Write a formal letter or email to your insurer's internal complaints team. Attach your plumber's statement and explicitly state that the damage was hidden and unforeseeable. Under the Fair Insurance Code, they must acknowledge your complaint within 5 business days and investigate it fairly.
4. **Escalate to the Ombudsman:** If the insurer issues a final "deadlock letter" refusing to budge, you can take your case to the [Insurance & Financial Services Ombudsman Scheme (IFSO)](https://www.ifso.nz/) or Financial Services Complaints Ltd (FSCL). This service is **entirely free** for consumers, and their rulings are binding on the insurance company.
To help tailor the next steps, could you tell me:
* Who is your **insurance provider**?
* Was the leak hidden **inside a wall or floor** , or was it somewhere visible?
* Did you get a **pre-purchase building inspection report** before buying the home?
## Google AI Mode
Answer ID: c4d7fe96-0322-4dea-bb06-532b56d1c0ca
Yes, you can absolutely challenge the insurer’s decision. In _New Zealand_ , a common point of contention in home insurance is the distinction between sudden/accidental damage and **gradual damage** or **lack of maintenance** (which standard policies generally exclude).
The fact that you had **no idea the leak was there** (often referred to as a "hidden" leak) is a critical factor, and many policies actually provide a specific, limited extension for hidden gradual damage (such as leaking pipes behind walls or under floors). [Insurance Council of New Zealand (ICNZ)]
Steps you can take to challenge the decision include:
1. **Request the full evidence and report:** Ask the insurer for a detailed copy of the assessor’s, plumber’s, or builder’s report. You need to see the exact technical basis they used to determine the leak was due to maintenance or long-term wear rather than a sudden failure. [Insurance Council of New Zealand (ICNZ)]
2. **Check your policy wording carefully:** Look specifically for clauses covering "hidden gradual damage", water leaks, or internal pipework. Many policies cover a limited amount (e.g., $2,000 to $10,000) for hidden leaks even if the damage took time to manifest, provided it wasn't reasonably discoverable. [Insurance Council of New Zealand (ICNZ)]
3. **Get an independent opinion:** Consider hiring your own independent builder or certifying plumber to inspect the damage and provide a second opinion on when and why the leak occurred.
4. **Use the insurer’s internal dispute resolution (IDR):** Formally lodge a complaint with your insurer's internal disputes department or dispute resolution team, laying out your evidence and pointing out that the damage was completely hidden and not reasonably visible or maintainable by you.
5. **Escalate to a free external dispute resolution scheme:** If the internal review upholds the decline and you disagree, you can take your complaint to an external, independent dispute resolution scheme. New Zealand insurers belong to either the Insurance and Financial Services Ombudsman (IFSO) or Financial Services Complaints Limited (FSCL). These services are completely **free for consumers** and their determinations are binding on the insurer.
If you'd like to share:
* The **type of leak** (e.g., a pipe behind a wall, a roof leak, or a shower liner)
* Whether your policy mentions **hidden gradual damage** or a specific water damage limit
I can help you pinpoint what to look for in your policy wording.