Most people interact with their house insurance twice: when they buy it and when something goes wrong. In between, the policy sits in an inbox, and the specific obligations inside it go unread until the moment they matter.

Fire is where that gap shows up most sharply, partly because the loss is usually total and partly because the questions asked afterwards are detailed. None of what follows is advice about your particular policy, because wordings differ substantially between insurers and products. It is a prompt to go and read yours, and a list of the documentation that is straightforward to keep and awkward to produce after the fact.

Read what your policy says about fire safety

Policies commonly include general obligations around maintaining the property and complying with relevant law, and some include more specific expectations. Wordings vary, and a clause that appears in one insurer's policy may be absent from another's.

Worth looking for: anything about working smoke alarms, anything about compliance with building or tenancy requirements, anything about solid fuel heating and flue maintenance, and anything about the property being unoccupied for an extended period, which is particularly relevant to holiday homes.

If a clause is unclear, ask your insurer or broker directly and keep the answer in writing. That is a ten minute task that is considerably easier before a claim than during one.

The legal obligations that may sit behind it

Two sets of New Zealand requirements are worth knowing because policies frequently reference compliance with law in general terms.

For rental properties, the Residential Tenancies Act has required working alarms since July 2016. They must be photoelectric with a battery life of at least eight years, or hardwired. Placement is prescribed: within three metres of each bedroom door or inside each bedroom, at least one on every level, and in each self contained sleepout, cabin or caravan.

For new builds and consented alterations, the updated Building Code Acceptable Solutions C/AS1 and C/AS2, effective November 2024, require interconnected alarm systems referencing NZS 4514:2021.

For an existing owner occupied home with no consented work and no tenancy, there is no statutory requirement at all. That is a genuine legal distinction and it does not mean your policy is silent on the subject.

The documentation that is easy to keep

None of this is onerous and all of it is awkward to reconstruct later.

• Photographs of each alarm in position, with the room identifiable, taken when installed and again at each annual check.

• The make, model and range of every unit, plus the manufacture date read from the back. Alarms have a ten year service life from that date, so this also tells you when replacement is due.

• Purchase receipts for the alarms, kept in the same folder.

• A dated note of each test, which can be as simple as a recurring calendar entry you tick off at the daylight saving clock changes.

• Invoices for annual flue sweeping if you have a wood burner or open fire, and for any electrical work, which should be done by a licensed person in New Zealand.

• For landlords, signed ingoing inspection records confirming alarms were present and working, plus any written correspondence about faults.

Keep it in cloud storage rather than a drawer in the house, for reasons that should be obvious in an article about fire.

Contents valuation, separately

The other half of a fire claim is contents, and most New Zealand households are substantially under insured because they have never actually counted.

Walk each room with your phone, filming as you go and opening wardrobes and cupboards. It takes twenty minutes and it produces a record that is far more useful than a list written from memory afterwards. Keep receipts and serial numbers for high value items. Then check that your sum insured roughly matches what you just filmed, because people consistently guess low.

Reducing the risk is the point

Documentation matters at the margins. What matters much more is that the fire is detected early enough that there is a house left to claim on, and the choices there are well established.

Photoelectric sensing detects the slow smouldering fires that develop overnight, which are the ones most likely to become a total loss, considerably earlier than older ionisation technology. Sealed ten year lithium batteries remove the annual change and the possibility of a missing battery. Interconnection means a fire starting in a garage, laundry or sleepout sounds every alarm in the house immediately rather than waiting for smoke to travel.

Heat alarms rather than smoke detectors in the kitchen, laundry and garage prevent the nuisance activations that lead to alarms being disabled, which is the failure mode behind a large share of serious residential fires.

Sourcing and the ten year clock

In New Zealand, CAVIUS, Watchman and SmartSense are distributed by On Point Distribution through more than 700 retailers and electrical wholesalers nationwide, so comparing a smoke detector nz on sensing type, sealed battery life and interconnection is straightforward.

Whatever you fit, write the installation year on a label inside the meter box and add it to the same folder as everything else. In ten years the replacement is due on the manufacture date, and nobody remembers.

Thirty minutes, once a year

Read the fire related clauses in your policy. Photograph the alarms. Record models and manufacture dates. Film the contents. Keep the flue and electrical invoices. Put it all in cloud storage.

If you are unsure how any of it applies to your situation, your insurer or broker is the right person to ask, and asking costs nothing.

Author bio: Contributed by a New Zealand writer covering residential property risk. This article is general information, not insurance advice. Policy wordings vary, so check your own policy and talk to your insurer or broker.