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Home Rebuild Cost Calculator Australia

Estimate your home rebuild cost to ensure you are not underinsured for a total loss.

Last verified: June 2025 | 2025 construction cost estimates by state

Home Rebuild Cost Calculator

Estimated Rebuild Cost
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Cost Breakdown

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Why Home Rebuild Cost Matters for Insurance

Your sum insured should reflect the true cost to rebuild your home from scratch - not its market value (land + house). Many Australian homeowners are underinsured because they insure for market value rather than rebuild cost.

What's Included in Rebuild Cost

The Risk of Underinsurance

If you're underinsured, most insurers apply "average" - reducing even partial claim payouts proportionally to how underinsured you are. Getting an accurate rebuild estimate before choosing your sum insured is one of the most important insurance decisions homeowners make.

Estimates only. For an accurate figure, use a professional quantity surveyor or your insurer's calculator tool.

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