Home Insurance Replacement Cost Calculator

The replacement cost calculator estimates the cost to rebuild or replace the improvements on your property—such as your home or other structures—excluding the value of the land. This figure is designed to reflect current construction and material costs and is typically used as a guide to help you set an appropriate insurance coverage limit.

By using the calculator, you gain a clearer understanding of:

• Rebuild costs: The potential expenses involved in restoring your property if it were completely destroyed.
• Coverage adequacy: Whether your current insurance policy provides enough protection to cover a full rebuild.
• Financial peace of mind: Confidence that you’re not underinsured in the event of a total loss.

It’s important to note that the calculator provides an estimate only. For more precise figures, particularly if your property has unique features or high-end finishes, a professional valuation or quantity surveyor’s report may be recommended.

You’ll be asked for:

• Property type

• Finish/quality level

• Location (state)

• Total floor area (m²)

• Number of storeys

• Optional features (garage, basement, pool)

• Contingency/professional-fees percentage (if desired)

Build rates can differ significantly across Australia due to variations in local labour costs, material availability, and transportation expenses. To account for these factors, the replacement cost calculator applies a location multiplier. This adjustment ensures the estimate reflects the regional conditions specific to your property’s location—whether it’s in a metropolitan centre, regional town, or remote area.

By incorporating these location-based factors, the calculator provides a more realistic estimate of what it may actually cost to rebuild your property in your area, rather than relying on a one-size-fits-all figure.

• Storeys: Each additional level applies a small multiplier to reflect added structural and service costs.

• Floor area (m²): The adjusted $/m² rate is multiplied by your total floor area to calculate the Base build amount.

Extra allowances are included for:

• Garages (attached/detached)

• Basements (unfinished/finished)

• Pools
  These are added on top of the Base build amount and shown clearly in the breakdown.

This buffer reduces the risk of under-insurance by allowing for unexpected costs, design fees, and policy inclusions. You can choose the percentage that suits your comfort level.

• Replacement cost (Selected) – Base build + Features + Contingency/fees

• A decision range with Low (−10%), Selected (mid), and High (+10%) figures

• A transparent breakdown showing every rate, allowance, and multiplier used

No. The calculator only covers improvements (buildings/structures)—land is excluded.

The calculator reports construction-based amounts. Insurance policies vary, so if GST needs to be included, you can adjust using the contingency/fees buffer or select a figure from the upper decision range. Always confirm with your insurer.

Yes—you can change property type, finish level, size, location, features, or contingency settings to instantly see how the replacement cost changes.

• Estimates are guides only, not builder quotes.

• Works best for typical residential properties; unique or heritage builds may need specialist advice.

• Accuracy depends on correct inputs (area, features, quality).

• Final coverage should consider policy terms, GST, escalation, and risk appetite.