Home Insurance Estimator United States

What this estimator does

The home insurance calculator gives three indicative figures for insuring a property: the rebuild cost, a recommended level of coverage and an estimated annual premium. Enter your country, the size of the home, its age and a broad risk level, and use the results to budget and to check whether a quote looks reasonable.

It works for the US, the UK, Canada and Australia, using a general cost level for each. It does not replace a formal quote, but it helps you spot one that looks too high, too low, or based on the wrong sum insured.

Rebuild cost, coverage and premium

• Rebuild cost: an estimate of what it would take to reconstruct the home, from its size and a cost level per unit of area.
• Recommended coverage: the rebuild figure plus a margin, so a claim is not left short by rising costs or extras.
• Annual premium: a cost estimate applied to the coverage and adjusted for the property’s age and risk.

Together they show how much cover you need and roughly what it will cost each year.

Why rebuild cost is the key number

You insure the cost of rebuilding, not the market price. Market value includes the land and the appeal of the location, neither of which needs rebuilding after a loss. A home in an expensive area might cost far less to reconstruct than to buy, while a remote property could cost more. Setting the sum insured to the wrong figure is the most common and costly mistake in home insurance, so the calculator bases coverage on rebuild cost.

The risk of under-insurance

If your sum insured is below the true rebuild cost, the payout after a disaster may not cover the full rebuild, and some policies apply an average clause that scales down claims for an under-insured home, so even a partial loss is not fully paid. The recommended coverage adds a margin above the rebuild estimate for rising building costs and the extras a full rebuild involves. Aim for that figure, not the minimum.

Who should use it

It helps homeowners setting a sum insured for a new policy, people renewing who want to check their cover has kept up with costs, buyers budgeting for insurance, and anyone concerned about under-insurance.

Why premiums differ between homes

Older properties may use materials or construction methods that cost more to repair or replace, and they are more likely to have faults that lead to claims, so a newer build often costs less to insure. Location matters as much: a property exposed to flooding, bushfire, storms or subsidence is in a higher risk band, and two identical houses can cost very different amounts to insure because of where they stand. Change the risk input to see how strongly it moves the premium.

If a quote is much higher than the estimate, it may reflect a risk the insurer weights heavily; ask about it before assuming the price is wrong.

Things to keep in mind

Real rebuild costs depend on local construction prices, your home’s materials and finish, access, and features a calculator cannot see. Premiums depend on much more than size, age and a broad risk level, including your claims history and the cover and deductible or excess you choose. The estimate reflects general levels, not any one insurer’s prices. A professional rebuild assessment gives an accurate sum insured, and only a quote gives a real price.

Getting the most from it

Enter an honest home size and the property’s age for a rebuild estimate, and set your policy at the recommended coverage. Compare the estimated premium with any quote: one far above it is worth questioning, and one far below it may mean thinner cover than you expect. Re-run the estimate at each renewal, because building costs rise and a sum insured that was right when you bought the policy can slip into under-insurance.

This is general information to help you plan and compare, not financial advice.

About This Home Insurance Calculator

Use this home insurance calculator to get an instant, accurate estimate. The figures follow official guidance and every rate and threshold is kept up to date for 2026. Adjust the inputs above to match your situation, or browse all our calculators to plan your next step.