# M-T04-H-P08: My house is in an area that has flooded before. Which NZ house insurers should I look at?

Collected 11 October 2026

[Home and contents insurance study](https://nzbrands.ai/research/insurance/home-contents-insurance)

## ChatGPT

Answer ID: 33c4fd9e-c24a-4a29-82e3-1fef0f6598d6

If your house in New Zealand is in an area that has flooded before, I’d look at several insurers rather than assuming your home is uninsurable. The key question is whether an insurer will cover your specific property for future flooding, on what terms, and at what excess or premium.

A history of flooding can affect whether an insurer offers cover, the price, exclusions, and whether the property is insured for certain types of water damage. Two houses in the same area can receive different decisions.

## NZ house insurers to approach

I’d start by comparing these established providers and asking each one to assess your exact address.

1. AMI

AMI explicitly advertises cover for storm and flood damage to homes. Ask how the previous flooding at your address affects eligibility, the excess and the premium.

Contact: 0800 100 200

[Home insurance and quotes](https://www.ami.co.nz/home-insurance) · [Flood-risk and land categories](https://www.ami.co.nz/disaster-claims-hub/land-categorisation)

Source: AMI's published cover information. [Home Insurance | Quote & Buy Home Insurance](https://www.ami.co.nz/home-insurance)[Land Categorisation](https://www.ami.co.nz/disaster-claims-hub/land-categorisation)

2. AA Insurance

AA Insurance advertises storm and flood damage cover and specifically asks applicants about flood risk, previous damage and mitigation work. Be upfront about your property's history when requesting a quote.

[Home insurance and quotes](https://www.aainsurance.co.nz/home-insurance)

Source: AA Insurance's home cover and quote questions. [Home Insurance - get a quote and buy online](https://www.aainsurance.co.nz/home-insurance)[Quote](https://go.aainsurance.co.nz/home/quote.html)

3. State Insurance

Include State in your comparison and ask for written confirmation of flood cover, any special excess and whether your property needs risk-reduction work.

[State Insurance website](https://www.state.co.nz/)

4. Tower Insurance

Request an address-specific assessment. Check whether the offered policy covers flood damage to the building, rather than assuming general storm cover is sufficient.

[Tower Insurance website](https://www.tower.co.nz/)

5. FMG

Worth approaching, particularly if you own a rural property or lifestyle block. Ask whether your property type and specific flood exposure fit its underwriting criteria.

[FMG home insurance information](https://www.fmg.co.nz/what-we-cover/businesses/other-businesses/home)

These are a shortlist to approach, not a guarantee that each will insure a flood-exposed property. Consumer NZ's [house insurance comparison](https://www.consumer.org.nz/money/insurance/house-and-contents-insurance/review) also includes providers such as MAS, Initio, Trade Me Insurance and AMP. [Best house and contents insurance](https://www.consumer.org.nz/money/insurance/house-and-contents-insurance/review)[Home Insurance Policy Wording](https://www.fmg.co.nz/what-we-cover/businesses/other-businesses/home)

## What to ask each insurer

Don't just ask, “Do you cover floods?” Give them your address and flood history, then ask these specific questions:

- Will you insure this exact property? Does its previous flooding affect acceptance or renewal?
- What flood damage is covered? Ask about river or stream overflow, surface-water runoff, stormwater backing up, and water entering the house.
- Is there a separate flood excess? Ask how much you would pay for a claim and whether any exclusions apply.
- What happens if the property floods again? Check building repairs, removal of debris, drying, and temporary accommodation limits.
- Are there conditions? Ask whether drainage improvements, floor-level changes or other mitigation measures are required.
- Will you confirm the terms in writing? Keep the quote and policy wording, including any special endorsements or exclusions.

Be particularly careful to distinguish flood damage to the house itself from damage to the surrounding land. New Zealand's Natural Hazards Commission Toka Tū Ake generally covers eligible residential land damage from storms and floods, while damage to the home itself is handled under your private policy. This is not full insurance for all land or flood losses. [Cover for storm, flood, and landslide damage :: Natural Hazards Commission Toka Tū Ake](https://www.naturalhazards.govt.nz/insurance-and-claims/cover-for-storm-flood-and-landslide-damage/)[Natural disaster insurance: what's covered for land affected](https://www.consumer.org.nz/money/insurance/house-and-contents-insurance/eqcover-what-toka-tu-ake-covers-for-flood-or-storm-damage)

## If standard insurers decline

Consider using a registered insurance broker who can approach insurers on your behalf and explain your property's risk history. Ask whether any insurer will offer restricted cover, such as fire-only insurance, if comprehensive cover isn't available. Be aware that fire-only cover will not protect you against a future flood.

You can also read [Consumer NZ's guidance on buying house insurance](https://www.consumer.org.nz/money/insurance/house-and-contents-insurance/guide).

## One question that would help me narrow this down

When you say the area has flooded before, which situation best describes your house?

## Gemini

Answer ID: 1a6c3079-0900-42a0-aa66-f773a9b14337

In New Zealand, finding house insurance when your property has a history of flooding can be challenging, as private insurers assess risk strictly on an address-by-address basis. Standard house insurance policies generally cover storm and flood damage to the *house* itself, while the Natural Hazards Commission (NHC, formerly EQC) covers certain limited aspects of the *land* (such as silt clean-up and specific retaining structures). 

Because insurers use granular geographic and historical data (including council hazard maps and past claims data), your options will depend heavily on the severity and frequency of the previous floods. Major insurers to look at and approach include:

### 1. Major Private Insurers
* **Tower Insurance:** Tower is well-known in New Zealand for using an address-risk rating model that explicitly prices in flood, earthquake, and landslip risks. Getting an online quote will quickly show you how they view your specific location's risk profile and what excesses or premiums apply.
* **AA Insurance, AMI, and State (IAG brands):** These are among the largest insurers in the country. While they underwrite properties with hazard histories, they may apply higher excess amounts (specifically for floods) or require certain risk-mitigation measures.
* **MAS (Medical Assurance Society):** If you are eligible for MAS membership (historically medical and professional groups, though check current criteria), they provide comprehensive house insurance with robust policy wording, though they will still review property-specific risk.

### 2. Working with an Insurance Broker
If you find that mainstream insurers decline cover, quote prohibitively high premiums, or place heavy exclusions on your property due to its flood history, your best path is to consult an **independent insurance broker** (such as Rothbury, Abbott, Gallagher, or local broker networks). 
* **Access to Niche Markets:** Brokers have access to wholesale or specialized insurers (sometimes operating via Lloyd's of London markets) that handle higher-risk or non-standard properties.
* **Tailored Advice:** They can help package your application with risk-mitigation details (e.g., if you have installed drainage, stopbanks, or raised electrical fittings).

### Key Tips for Insuring a Flood-Prone Home in NZ:
* **Check the LIM and Council Maps:** Insurers will check your local council's natural hazard maps. Knowing what the council's data says about your property helps you understand what the insurer is seeing on their systems.
* **Disclose History Transparently:** Always fully disclose the property's flood history. Failing to declare past flooding or previous natural hazard claims can lead an insurer to void your policy when you need to make a claim.
* **Expect Higher Excesses or Sub-limits:** For properties with a flood record, insurers will often apply a specific, higher excess for water/flood damage (e.g., $2,500 or $5,000 instead of a standard $400 excess) or exclude certain low-lying outbuildings.

## AI Overviews

Answer ID: ad243509-9987-46b0-86cf-b0ed2df00b81

Finding house insurance for a flood-prone property in New Zealand is challenging due to the industry's strict shift toward **address-level risk-based pricing**. Instead of averaging costs across a region, major insurers now evaluate your exact address using highly advanced flood maps.

Your **best first step is your existing home insurer**. New Zealand insurers are generally much more likely to look after existing clients than accept a new high-risk property. If you need to shop around, you should approach the following key players and platforms:

 * **Tower Insurance** : Tower was the first in NZ to publicly roll out individual property flood-risk rating tools. They price strictly by address. If your risk is moderate, you will pay a premium surcharge, but they will often still offer terms unless the frequency is extreme.

 * **MAS (Medical Assurance Society)** : MAS stands out because it offers **"Area Replacement"** cover rather than just "Sum Insured". If they accept your property, this protects you against disaster-driven spikes in building costs. Note that they have strict membership eligibility criteria.

 * **Initio Insurance** : An online-focused provider that uses instant address-based data assessments. They are useful for an immediate online check to see if their underwriting model flags your home or allows an instant quote.

 * **IAG New Zealand (AMI / State / NZI)** : As NZ's largest general insurer, they underwrite AMI, State, and broker-led NZI. Because they manage a massive risk pool, they are highly selective. For known flood areas, you will likely need to speak directly to an underwriter rather than completing an online form.

* * *

How Flood Insurance Works in New Zealand

When comparing your options, keep in mind how the New Zealand regulatory and insurance framework splits up a flood claim:

 * **The House (Structure):** Covered strictly by your **private insurance policy** up to your chosen "Sum Insured" cap.

 * **The Land:** Covered by the Natural Hazards Commission Toka Tū Ake (NHC). If you have a valid private house policy, the NHC automatically covers silt/debris clean-up and land damage within 8 meters of your home. **Note:** The NHC does _not_ cover the building itself for storm or flood damage.

* * *

What to Expect During the Application

Because the area has flooded before, expect insurers to implement one of three strategies:

 1. **Risk Surcharges:** Your annual premium may be hundreds or thousands of dollars higher than neighboring properties on higher ground.

 2. **Imposed Excesses:** The insurer might agree to cover you but impose a significantly higher **special flood excess** (e.g., $2,500 or more per claim instead of the standard standard $500).

 3. **Peril Exclusions:** In high-risk scenarios, an insurer might offer an "unbundled" policy that covers fire and earthquakes but explicitly excludes flood damage completely.

**Crucial Warning:** You must completely and accurately **disclose the property's entire flood history** during your application. Failing to disclose known flooding counts as non-disclosure and gives the insurer the legal right to cancel your policy or deny a future claim entirely.

* * *

If you struggle to secure terms from these mainstream providers directly, your next best step is to engage an **independent insurance broker** via the [Financial Advice New Zealand directory](https://financialadvice.nz/) or [Gallagher Insurance NZ](https://www.ajg.co.nz/). Brokers have direct access to specialized corporate underwriters who handle non-standard or high-hazard residential risks manually.

If you'd like to narrow down your options, let me know:

 * Are you shopping for **new cover for a house purchase** , or checking options for a **home you already own**?

 * Has the house **physically flooded inside the living spaces** , or was the flooding restricted to the section/yard?

 * Do you have a copy of the property's **LIM report** or council hazard maps handy?

## Google AI Mode

Answer ID: 0ee7df05-8343-4f4e-8589-b0a72e37826a

When looking for house insurance in New Zealand for a property with a history of flooding, it helps to understand how the NZ insurance market handles natural hazard risks. Most major insurers use **risk-based pricing** , meaning they evaluate granular, property-specific data (such as proximity to rivers, historical rainfall flooding maps, and elevation) rather than just broad regional averages.

For structural damage to your home from a storm or flood, your private insurer covers the building, while the government-backed **Natural Hazards Commission (NHC) Toka Tū Ake** (formerly EQC) provides restricted cover specifically for insured residential land (like retaining walls or driveways immediately surrounding the house).

Key major insurers to look at and compare in New Zealand include:

 * * **Tower Insurance** : A pioneer in fully transparent, map-based risk pricing in New Zealand. Tower explicitly scores individual properties for river and rainfall flood risk using third-party data. Getting a quote online gives you an immediate look at how they grade your specific location's risk profile.

 * **AA Insurance** : Also implements risk-based pricing, assessing localized environmental hazards like storms and floods to determine premiums. They provide clear guidelines on how location and hazard exposure impact your policy cost.

 * **NZI (IAG New Zealand)** / **State** / **AMI** : As part of IAG (one of New Zealand's largest insurance operators), these brands underwrite a massive portion of NZ homes. They use sophisticated hazard mapping to evaluate flood exposure, and working through an insurance broker via NZI or getting direct quotes via State/AMI can show you how traditional insurers approach your specific address.

 * **FENZ / Built-in NHCover providers** : Keep in mind that whichever private fire/house insurer you choose, it automatically bundles the statutory NHC natural disaster levy, providing baseline land-damage protection for floods. [Consumer NZ]

 *

Tips for getting flood-prone coverage in NZ:

 * * **Shop around and compare** : Because risk-modelling data varies between insurers (some use Moody's, others use in-house or alternative geospatial mapping), one company might quote a drastically different premium or excess than another for the exact same flood-prone address.

 * **Disclose and check the LIM** : Ensure you are completely transparent about the property's history. Insurers cross-reference applications with council Land Information Memorandums (LIM) and geospatial flood models.

 * **Invest in mitigation** : If you have undertaken physical mitigations on the property (such as raising electrical switchboards, installing non-return valves, or improving localized drainage), let the insurers know, though note that policy acceptance and pricing ultimately lean heavily on macro-geographical risk.

 *

If you'd like to narrow this down, let me know:

 * Have you already received **high premium quotes or exclusions** from any specific insurers?
 * What **type of flooding** has affected the area previously (e.g., overflowing rivers, heavy rainfall/surface runoff, or coastal storm surges)?