What this calculator does
In Miami, the wind portion of a homeowners policy often costs more than everything else combined. This calculator estimates it from building age, roof age, wind-mitigation features and the hurricane deductible, and shows how much mitigation credits could save. Florida is a no-fault state requiring $10,000 of personal injury protection and $10,000 of property damage liability, but no bodily injury liability for most drivers. Miami's premiums are among the highest in the country because of fraud history, uninsured drivers and severe weather.
How to use it
- Enter dwelling coverage (rebuild cost, not market value).
- Choose the year built and roof age.
- Choose the level of documented wind mitigation.
- Pick a hurricane deductible.
The formula
Estimated premium = dwelling ÷ 1,000 × starting rate for the building age × mitigation factor × roof-age factor × deductible factor. Hurricane deductible in dollars = dwelling coverage × percentage. Starting rates are Rate and Reason estimates.
Worked example
Using the default inputs shown in the calculator above:
| Factor | Value |
|---|---|
| Dwelling coverage | $450,000 |
| Starting rate per $1,000 (y2002to2009) | $10.00 |
| Wind mitigation (some) | 0.85x |
| Roof age 11-15 years | 1.05x |
| Hurricane deductible 2% | 1x |
| Estimated windstorm premium | $4,016 |
Estimated windstorm / hurricane premium: $4,016 / year. Hurricane deductible: $9,000 (2% of dwelling coverage).
Building age sets the starting rate because homes built after Florida's 2002 building code resist wind better. Adding documented mitigation (roof straps, impact windows, shutters) is the biggest lever you control here. A higher percentage deductible lowers the premium but means paying $9,000 yourself before coverage starts after a hurricane.
What drives windstorm costs in Miami
Florida's building code was strengthened after Hurricane Andrew and again in 2002, so newer homes get lower rates. Insurers must offer discounts for mitigation documented on the OIR-B1-1802 form, and the My Safe Florida Home program has offered free inspections and matching grants for upgrades when funded. Many Miami homes are insured by Citizens Property Insurance, the state-backed insurer.
Common mistakes and tips
- Insuring market value instead of rebuild cost.
- Skipping the wind-mitigation inspection, which can cut premiums significantly.
- Choosing a 10% deductible without the cash to pay it.
- Assuming windstorm coverage includes flood — it does not.
Frequently asked questions
How much is hurricane insurance in Miami?
It varies widely by home. This estimate shows how age, roof and mitigation move the price; get quotes for a real number.
What is a hurricane deductible?
A separate deductible, usually 2%, 5% or 10% of dwelling coverage, that applies to hurricane damage instead of the regular deductible.
What is a wind-mitigation inspection?
An inspection that documents features such as roof shape, roof-to-wall connections and opening protection, used to apply premium credits.
Does a newer roof lower premiums?
Usually yes. Many insurers charge more or decline coverage for older roofs.
Sources
Disclaimer
This calculator provides estimates for educational purposes only and is not financial, tax, legal, real estate, or insurance advice. Consult a licensed professional before making decisions.