Home insurance in New Zealand seems like one product, but it is really two jobs. One part protects the physical building you live in. The other protects everything you would need to replace if that building suddenly made you start again. Keeping the two separate in your head is the single most useful thing you can do, because they need different sums, different thinking and different care.
Contents vs building cover
Almost every NZ home policy splits into these two halves:
- Building cover. Protects the structure: the walls, roof, floors, permanent fixtures, and the kitchen and bathroom fittings that are bolted down. A landlord insuring a rental property typically needs this.
- Contents cover. Protects the movable things: furniture, electronics, clothing, appliances and personal items. A tenant usually needs this, because the owner covers the building.
Most policies let you buy the two together or separately. Homeowners usually want both, but the point is to pick what matches who owns what. If you rent, insuring someone else's structure because it felt like the full product is money wasted. If you own, skipping contents because the building is the obvious part leaves your possessions exposed.
The building sum insured is about the cost to rebuild the structure, not the market value of your home. Market value includes the land, which is rarely what you are insuring. Two identical houses on very different sized sections can need the same amount of building cover, and getting this wrong is a common route to being underinsured.
Getting the sums insured right
The sum insured is the cap on what the insurer will pay, so the whole game is setting it honestly. It is also where people guess, because nobody wants to tot up the cost of rebuilding a house.
- Rebuild, do not revalue. Work out the like-for-like replacement cost of the structure. Think builders, materials and clearing the site, not what an agent would list the property for.
- Walk the rooms for contents. Tally what it would actually cost to replace everything you own today, not what you paid for it years ago.
- Review it at renewal. Sums drift out of date after big purchases, renovations or a year of rising building costs.
The reason this matters is a rule called average. If your sum insured is lower than the true cost of what was lost, many policies scale the payout down by the same proportion. Underinsure by half and a partial loss can be paid as less than half. Guessing low on the sum can cost you twice: once in the cover you never had, and again at claim time.
If the numbers feel guessy, that is normal. Most people cannot estimate rebuild costs off the top of their head, and you do not need to be an assessor to get this right. Banks, builders and some insurers publish rebuild cost guidance, and your provider can help check your sum at renewal. The honest approach is to use a sensible estimate, then review it at least yearly rather than setting it once and forgetting it.
What is typically covered and excluded
Most NZ home policies include a familiar set of events and exclude a familiar set of shrugs. The names matter less than the dividing line between them.
- Commonly covered: fire, certain storm and water damage, theft and burglary, and in some policies sudden and accidental damage to the building.
- Commonly excluded: earthquake damage (often optional and priced by risk), flooding in high risk locations, gradual wear and tear, and damage that follows from not maintaining the property.
The classic line in the wording is sudden versus gradual. A slow leak that rots a wall over months is usually maintenance you should have caught. A pipe that bursts suddenly and floods a room is often a covered event. Read the policy document for the events that actually threaten where you live, which is the honest way to check your cover.
When you need to claim
Sooner or later most policies get tested, and the test is paperwork plus timing. Document the damage with photos, keep any damaged items, tell the insurer promptly and retain every receipt. Getting evidence, timeframes and disputes handled properly makes a real difference, and it is a skill you can learn before you need it.
Home insurance is two jobs, not one: protect the building and protect the contents. Set both sums to replacement cost rather than market value, keep them current, and read which events are in and which are out. Do that and you have done the core of home insurance the honest way.