Higher rebuild costs = higher insured sums → higher premiums.

Even if you never make a claim, you pay more because rebuild costs are higher.

5. POSTCODE RISK PRICING IS CHANGING EVERYTHING

Thirty years ago, insurers priced policies by:

• House size

• Materials

• Contents value

Today, insurers price by:

• Flood risk

• Bushfire probability

• Proximity to coastlines

• Elevation

• Local claim frequency

• Storm surge and hail risk

• Future climate modelling

High-risk postcodes (examples):

• Lismore

• Gympie

• Goodna

• Hawkesbury-Nepean region

• Blue Mountains

• Northern Rivers

• Parts of Townsville

• Coastal WA

• Adelaide Hills

• Far North QLD

If your postcode has a history of disasters, your premium could double — or more.

6. THOUSANDS OF HOMES ARE BECOMING “UNINSURABLE”

This is the quietest but most dangerous emerging trend.

Homes become uninsurable when:

• Flood risk is frequent or severe

• Bushfire modelling predicts high impact

• Coastal erosion risk is high

• Climate projections show worsening trends

Insurers may:

• Refuse to cover

• Exclude flood

• Offer only partial cover

• Price policies beyond affordability

• Increase excesses dramatically

In some QLD and NSW towns, premiums exceed $10,000–$15,000 per year.

7. FLOODING IS THE BIGGEST DRIVER OF INSURANCE VOLATILITY

Flood risk is the No. 1 determinant of premium hikes.

Why flooding is so costly:

• Homes often need complete restoration

• Electrical, structural, flooring and wall damage

• Contaminated water hazards

• Replacement of appliances and infrastructure

• High cost per claim ($50,000–$250,000+)

2022 Floods Impact

The 2022 East Coast floods cost over $5.6 billion — the costliest insurance event in Australian history.

This single event increased national premiums.

8. BUSHFIRE RISK IS ALSO RISING

Bushfire seasons are becoming:

• Longer

• Hotter

• More unpredictable

• More destructive

Areas previously safe are now borderline-risk or high-risk zones.

Bushfire insurance challenges:

• High property loss rates

• High replacement cost

• Expensive vegetation management

• Rebuilding delays

• Construction cost spikes during disasters

Homeowners in high-risk bushfire zones may see premiums double or triple.

9. CYCLONES AND NORTHERN AUSTRALIA ARE A SPECIAL CASE

Northern Australia (QLD, NT, northern WA) has some of the world's highest cyclone-related insurance premiums.

Why:

• Cyclone damage is catastrophic

• Frequent severe storms

• Building codes require stronger, more expensive construction

• High reinsurance load

The Federal Government introduced a cyclone reinsurance pool to reduce premiums — but results vary.

10. LANDLORD INSURANCE IS RISING EVEN FASTER THAN HOME INSURANCE

This affects renters indirectly.

Why landlord insurance is rising:

• Higher flood and storm costs

• Higher repair costs

• Higher labour shortages

• Increased tenant default/unpaid rent claims

• Higher strata repair costs

Landlords often pass these costs to renters through higher rents.

11. STRATA (APARTMENT) INSURANCE IS A GROWING CRISIS

Strata insurance has soared because:

• Apartment repair costs are higher

• More apartment buildings have defects

• Structural repairs are expensive

• Premiums rise with building age

• Water and plumbing failures cause costly damage

This cost is included in:

• Body corporate fees

• Investor rental pricing

• Developer feasibility

Apartment dwellers will feel increasing strata costs over the next decade.

12. WHAT THE GOVERNMENT IS DOING (AND NOT DOING)

Governments are stepping in — slowly.

Recent measures:

• Flood mapping improvements

• Disaster resilience funding

• Strata and building reform

• Northern Australia reinsurance pool

• Land-use planning changes

• Disaster mitigation infrastructure

But missing:

• Nationwide insurance affordability strategy

• Stronger land-use controls (to stop building in high-risk zones)

• Faster resilience infrastructure

• Incentives for home hardening (fireproofing, flood-proofing)

• National rebuild standards

Without these, premiums will continue rising.

13. WHAT NEEDS TO CHANGE TO MAKE INSURANCE SUSTAINABLE

To stabilise insurance, Australia must:

1. Stop building homes in floodplains and high-risk zones

This is the single biggest long-term fix.

2. Expand resilience infrastructure

Levees, floodways, firebreaks, drainage systems.

3. Invest in climate adaptation

Home elevation, fireproof materials, improved drainage.

4. Reform land-use planning

Local councils must stop approving high-risk developments.

5. Improve building quality

Reduce defects, enforce stricter codes.

6. Provide targeted subsidies

For high-risk households.

7. Build more housing to reduce rental pass-through costs

More housing → lower rents → lower landlord demand on insurance recovery.

14. WHAT FUTURE INSURANCE COSTS MAY LOOK LIKE (2025–2035)

Scenario 1: Current path (likely)

• Annual increases of 8–15%

• More uninsurable zones

• High reinsurance costs

• Rising disaster costs

Scenario 2: Moderate reform

• Smaller increases (5–8%)

• Reduced disaster losses

• Targeted mitigation projects

Scenario 3: Aggressive adaptation strategy

• Flat premiums in most areas

• Limited high-risk exclusions

• Nationwide infrastructure upgrade

• Long-term resilience

Australia is currently on Scenario 1.

THE BOTTOM LINE

Household insurance is exploding because:

• The climate is more extreme

• Rebuilds and repairs cost more

• Reinsurance is pricier

• Risk modelling improves

• More disasters occur

• Supply chains are fragile

• Postcodes are reclassified

• Construction inflation is severe

Insurance is becoming a frontline issue for the national economy.

Without major adaptation, planning reform, and resilience investment, insurance could become the next major affordability crisis — even bigger than energy.