House insurance calculator
Estimate a rebuild-cost coverage basis and model an annual or monthly premium with transparent, editable assumptions.
Estimate the labour, materials and related costs to reconstruct the home. Do not include land value, and do not assume the purchase price is the correct dwelling limit.
Important: This tool does not determine insurability, an adequate policy limit, covered causes of loss, endorsements, sublimits, liability, taxes or final premium. Currency selection changes formatting only; it does not supply local rates. Read policy wording and obtain professional rebuild estimates and insurer quotes.
What does this house insurance calculator estimate?
The calculator first creates a rebuild-cost planning amount from floor area, local construction cost, other structures and an allowance for professional fees, debris removal and uncertainty. It then adds the entered contents value.
For premium planning, it applies your editable annual base rate and five illustrative modifiers. This makes the arithmetic transparent, but only an insurer can provide a real quote and policy terms.
How the house insurance estimate is calculated
Estimate the main structure
Multiply insured floor area by a current local rebuild cost per square foot or square metre.
structure = area × local rebuild costAdd rebuilding allowances
Add the selected other-structures percentage, then the fees, debris and contingency percentage.
dwelling = (structure + other) × (1 + fees %)Create the property basis
The premium model uses estimated dwelling coverage plus the entered replacement value of contents.
property basis = dwelling + contentsApply the rate and modifiers
The base premium is multiplied by every selected illustrative factor. Monthly cost is annual cost divided by 12.
annual = property × rate % × all factorsA transparent planning estimate
For a 1,800 ft² home at $220 per ft², the main-structure estimate is $396,000. Add 10% for other structures and 12% for fees, debris and contingency.
- 1$396,000 + $39,600 + $52,272 = $487,872Illustrative dwelling rebuild amount.
- 2$487,872 + $75,000 = $562,872Add contents to create the property coverage basis.
- 3$562,872 × 0.5% = $2,814.36Base annual premium before illustrative factors.
- 4$2,814.36 × 0.9215 = $2,593.43Example annual estimate after all default modifiers.
Home insurance coverage components
The insured home and attached structures, subject to policy definitions and limits. Base the amount on reconstruction—not resale value.
Detached garages, fences, sheds and similar property may have a separate limit or percentage.
Furniture, clothing, electronics and other belongings. High-value categories may have sublimits or require separate scheduling.
May help with eligible extra costs while a home is uninhabitable after a covered loss. Limits and time periods vary.
Liability protection is not priced by this simple property model. Review limits and exclusions separately.
The amount or percentage you pay toward a covered loss. Catastrophe deductibles may work differently.
Use a rebuild assessment and home inventory
Ask a qualified local professional or insurer for a current reconstruction assessment that reflects local labour, materials, demolition, debris removal, professional fees, building-code requirements, site access and specialist features.
For contents, record rooms, major purchases, serial numbers, photographs and receipts. Review values after renovations, extensions, major purchases and construction-cost changes.
- Check rebuild assumptions annually
- Do not add land value
- Review valuables and category sublimits
- Compare limits, exclusions and deductibles—not premium alone
A standard policy may not cover every loss
Coverage depends on country, insurer, policy form and endorsements. Flood, earthquake, landslide, storm surge, sewer backup, gradual damage, wear and tear, pests, vacancy, business use and high-value property may be excluded, limited or require separate cover.
In the United States, FEMA states that most homeowners policies do not cover flood damage. Other countries and hazards have different arrangements. Read the exact wording and ask an authorized adviser what is and is not insured.
Sources for replacement cost and policy questions
House insurance calculator FAQs
Is this house insurance calculator an insurer quote?
No. It is an educational planning model using your inputs and editable illustrative factors. Only an insurer or authorized intermediary can provide an actual quote and policy terms.
Should I use my home’s market value?
Usually not for the dwelling limit. Market value includes land and market conditions, while the dwelling amount should reflect the cost to reconstruct the insured building, subject to local rules and policy terms.
How do I find rebuild cost per square foot or metre?
Ask an insurer, quantity surveyor, appraiser, builder or other qualified local professional for a current reconstruction assessment that includes local labour, materials, access, demolition and code requirements.
Why does the calculator use an editable base rate?
Insurance prices differ sharply by place, insurer, hazard, regulation, construction and customer profile. An editable rate makes the assumption visible and lets you replace the default with a relevant local benchmark.
What are the risk-factor multipliers?
They are transparent scenario assumptions for comparing inputs, not insurer rates. The tool multiplies location, construction, claims, deductible and security factors together.
Does a higher deductible always reduce the premium?
A higher deductible often lowers premium because you retain more of a covered loss, but insurer rules and catastrophe deductibles vary. Make sure the amount would be affordable after a loss.
What is replacement cost coverage?
Replacement cost generally means repairing or replacing covered property with materials or items of similar kind and quality without deducting depreciation, subject to the policy’s terms, limits and claim requirements.
What is actual cash value?
Actual cash value generally reflects depreciation for age and wear. It may pay less than the amount needed to buy new replacement property. Definitions and rules depend on the policy and jurisdiction.
Does home insurance cover floods?
Not always. In the United States, FEMA says most homeowners policies do not cover flood damage and separate flood insurance is available. Rules and products differ elsewhere, so check the exact policy.
Are earthquakes and landslides covered?
Coverage varies and may be excluded or require a separate policy or endorsement. Read the policy wording and ask specifically about local hazards.
How should I estimate contents value?
Create a room-by-room inventory using current replacement prices. Record high-value items separately because jewellery, art, collections, electronics and similar categories may have sublimits.
What is additional living expense coverage?
It may cover eligible increases in living costs while a home is uninhabitable after a covered loss. Limits, covered costs and time periods vary by policy.
How often should I review coverage?
Review it at renewal and after renovations, extensions, major purchases or significant construction-cost changes. Ask the insurer how inflation adjustments and building-code coverage work.
Are my property details stored?
No. The calculation runs in the browser, and this plugin does not transmit or store the values entered into the calculator.