Australia Home & Contents Insurance Calculator

How home insurance works in Australia

Australian home insurance typically bundles building cover (the structure) and contents cover (personal property) into a single combined policy — unlike Germany, where these are always separate products. Renters purchase contents-only policies. Standard perils covered include fire, theft, storm, lightning, and escape of liquid (burst pipes). Natural hazards (cyclone, flood, bushfire, earthquake) may be included or offered as add-ons depending on the insurer and product.

The Australian natural disaster challenge

Australia faces an unusually diverse range of natural perils, making home insurance pricing highly location-dependent:

Cyclone (QLD, NT, WA)

Northern Australia is one of the most cyclone-exposed regions in the world. In far north Queensland (Cairns, Townsville), comprehensive home insurance can cost $6,000–$15,000+ per year for a standard house — multiples of the southern state average. The Cyclone Reinsurance Pool, established by the Australian government in 2022, was designed to reduce premiums in northern Australia by providing cheaper government reinsurance to insurers. Uptake has been mixed and some insurers remain reluctant to cover high-risk postcodes.

Bushfire (NSW, VIC, SA, WA)

Properties in Bushfire Attack Level (BAL) zones face significant loadings. The Black Summer fires (2019–20) destroyed over 3,000 homes and caused $2.3bn in insured losses. BAL-40 and BAL-FZ properties in bushfire-prone areas of the Blue Mountains, Dandenong Ranges, or Adelaide Hills now face premium increases of 50–200%, and some insurers have declined to renew policies in the highest-risk zones. Check your property's BAL rating through your local council or state fire authority (NSW RFS, CFA Victoria, SAFECOM).

Flood (national)

The 2022 eastern Australia floods were the most expensive insured natural disaster in Australian history ($5.8bn). Following the Royal Commission into National Natural Disaster Arrangements, most major insurers now offer flood as a standard or optional inclusion. However, properties in the National Flood Information Database's high-risk zones face significant premium loadings or may find cover unavailable from some insurers.

Hail (QLD, NSW, VIC)

Severe hailstorms cause some of Australia's most costly insured events. The 1999 Sydney hailstorm ($1.7bn) remains a benchmark event. Large hail can destroy roofs, skylights, and solar panels in minutes, and Brisbane and Sydney have both experienced multi-billion-dollar hailstorm events in recent years.

Building sum insured: getting it right

A critical mistake Australian homeowners make is underinsuring — setting the building sum insured (the amount your policy pays to rebuild your home) below the actual cost to rebuild. In 2024, rebuild costs have surged due to construction inflation: expect $2,500–$3,500/m² for standard construction in most capital cities, and $3,500–$5,000+/m² in regional areas with limited tradespeople.

The insured amount should reflect the full cost to demolish, clear debris, and rebuild from scratch — not the current market value of your home (which includes land). A $1.5M property in Sydney's inner west may have a rebuild cost of only $600,000 for the structure, but an older weatherboard home in rural Victoria may cost $400,000 to rebuild from scratch despite a lower market value.

Use a professional rebuild cost estimator (many insurers provide one, or use the HIA/Cordell tools) and review your sum insured annually.

Strata / apartment insurance

For apartments and units, the owners corporation (body corporate) is legally required to insure the building, common areas, and in most states the original fixtures and fittings inside each unit. Individual owners only need to insure:

• Their contents (furniture, appliances, personal items)
• Improvements they have made above the original shell — new kitchen, renovated bathroom, custom flooring
• Personal liability for damage they cause to common areas or neighbours

Confirm with your owners corporation what the strata policy covers before buying additional cover. Strata schemes vary considerably in the scope of building insurance they carry.

Frequently asked questions

Is this calculator free?

Yes — completely free, no account needed. Everything runs in your browser and nothing you enter is saved.

Why has my home insurance premium increased so much?

Australian home insurance premiums rose 20–40% at many renewals in 2023–24. The main drivers: catastrophe reinsurance costs have tripled since 2017 as global reinsurers priced in climate-related losses; Australian-specific events (2022 floods, 2019–20 bushfires, repeated hail events) have made Australia a loss-heavy market; and construction inflation means rebuilding any damaged property costs significantly more than it did two years ago. Increases are not uniform — lower-risk properties in low-flood-risk zones may have seen smaller rises.

My insurer declined to renew my policy. What can I do?

This is an increasing problem for high-risk postcodes. Options include: compare broadly using comparison sites, contact an independent broker (they have access to specialty and non-standard insurers), check whether your state government or the ICA operates a policy of last resort scheme, and consider whether property modifications (ember guards, bushfire-rated construction, flood barriers) might make your property more insurable. Some councils now publish insurer availability data for high-risk zones.

Does home insurance cover damage from tree removal?

Most policies cover damage caused by a fallen tree (e.g. a neighbour's tree falls on your roof in a storm). They generally do not cover the cost to remove a tree that has not yet caused damage, or to trim overhanging branches as preventive maintenance. If a fallen tree has damaged a fence between properties, responsibility typically depends on which property the tree originated from and whether the owner was notified of a hazard in writing beforehand.