Home Insurance to Value Ratio Calculator
What Is the Insurance-to-Value Ratio?
The insurance-to-value (ITV) ratio compares your current dwelling coverage to the estimated cost to fully rebuild your home. Most insurers require homeowners to maintain at least 80% of replacement cost coverage — or face a coinsurance penalty at claim time. If your coverage is below 80%, your insurer may only pay a proportional share of partial loss claims. Rising construction costs since 2020 have left millions of homes significantly underinsured. Review your coverage limits annually and consider an inflation guard endorsement to keep pace automatically.
Frequently Asked Questions
What happens if I'm underinsured?
If you carry less than 80% of your home's replacement cost, the coinsurance clause can reduce your partial loss claim payment proportionally — even if the loss is far below your policy limit.
How do construction cost increases affect my coverage?
Construction costs have risen 30–50% in many markets since 2020. If you haven't updated your coverage limits, you may now be significantly underinsured even if you were adequately covered before.
What is an inflation guard endorsement?
An inflation guard automatically increases your coverage limits by a set percentage each year (typically 4–8%) to keep pace with rising construction costs, helping prevent unintentional underinsurance.
Should I insure based on market value or replacement cost?
Always base dwelling coverage on replacement cost, not market value. Market value includes land and location factors that don't affect rebuild costs. Replacement cost is typically lower in expensive markets and higher in rural areas.
How can I get an accurate replacement cost estimate?
Your insurer may use replacement cost estimator software. You can also hire a licensed appraiser for a professional replacement cost appraisal, which is particularly valuable for high-value or unique homes.
Results are estimates only. The coinsurance clause and its application vary by policy. Consult a licensed insurance professional for a proper coverage review and accurate replacement cost valuation.