HomeTools → FL Wind Mitigation Discount Calculator

Florida Wind Mitigation Discount Calculator

Florida's OIR-B1-1802 wind mitigation inspection unlocks stackable discounts on the wind portion of your premium — typically 50-70% of the total. The credits compound (each section applies sequentially), so achievable total discount on wind alone reaches 60-70%+ with full mitigation.

JM
Jake McEwen
NumbersLab · Updated April 2026
Policy Baseline
FL state average homeowners is ~$7,900/yr
$
Typically 50-70% in FL; higher closer to coast
%
OIR-B1-1802 Form Sections
Estimated Mitigated Annual Premium
$7,222/yrLimited mitigation
Saves $678/yr (8.6% of total policy)
Sequential Discount Math
Annual premium (total)$7,900
Wind portion (factor)60%
Wind dollars before mitigation$4,740
Roof Covering−5%
Roof Deck Attachment−3%
Roof-to-Wall Connection−7%
Roof Geometry
Secondary Water Resistance
Opening Protection
Compound discount on wind portion−14.3%
Wind dollars after mitigation$4,062
+ Non-wind portion (unchanged)$3,160
Mitigated total premium$7,222
Annual Savings
$678
8.6% of policy
5-Year Cumulative Savings
$3,389
Compounding cost-of-credit
Upgrade upside potential
Going from your current configuration to the maximum mitigation in every category would unlock an estimated $2,244/yr in additional savings (61.6% compound discount on the wind portion). Use this to evaluate whether a specific upgrade (typically opening protection or roof-to-wall straps) is worth the install cost.

How to Actually Get the Discount

1. Hire a licensed wind mitigation inspector. Inspections cost $100-$175 and are conducted by Florida-licensed home inspectors, general contractors, building code inspectors, or licensed P.E.s. The inspector physically verifies each of the 7 OIR-B1-1802 sections and signs the form.

2. Submit the signed form to your carrier. The form is valid for 5 years. Your carrier is required by Florida statute 627.0629 to apply the discounts on your next renewal — most carriers will retroactively re-rate the current term if you submit mid-policy and refund the difference.

3. If the inspection identifies easy upgrades, do them then re-inspect. Common high-ROI upgrades that change a discount category:

  • Hurricane shutters or impact glass on remaining unprotected openings — typical install $3K-$15K, but unlocks the ~28% "all opening protection" discount
  • Adding hurricane straps to a clip-only roof-to-wall connection — $1.5K-$4K, can move you from 7% to 16-22% credit
  • Secondary water resistance retrofit (sometimes possible during a re-roof) — $1K-$3K, ~6% credit

4. Check the My Safe Florida Home program. The state offers up to $10,000 in matching grants for qualifying hurricane mitigation upgrades on homestead properties. Income caps and waitlists apply but the ROI is usually excellent when accepted.

Methodology & Sources

Credits in this calculator reflect representative midpoint values from Citizens Property Insurance Corporation's 2024 rate manual (Section A.2: Wind Mitigation Premium Credits) and the largest Florida admitted property carriers' published rate filings. Each individual carrier's credit may differ within the OIR-permitted range; the values here are meant to provide a reasonable estimate, not a binding quote.

Compounding rather than summing — under OIR rate filings, discounts from each section apply sequentially to the wind portion of the base premium, not as a simple sum. This is mathematically: (1 - d1) × (1 - d2) × ... × (1 - d7). A configuration showing "50% combined discount" in some online tools is usually summing the individual percentages, which overstates the actual savings. We compound them correctly.

Wind portion of premium. On a typical Florida policy, 50-70% of the premium is allocated to wind risk; the rest (fire, theft, liability, etc.) is unaffected by mitigation. The calculator lets you adjust this percentage because exact split varies by carrier and proximity to coast.

What this doesn't capture: carrier-specific OIR rate filings that vary credits within ranges; mandatory inspection by your carrier's preferred inspector (some carriers require their inspector before applying discounts); secondary discounts from My Safe Florida Home program participation; the impact of a hip roof on hurricane deductible levels (some carriers offer reduced deductibles for hip roofs in addition to the percentage discount).

Related
Hurricane Insurance Calculator · Roof Age Insurance Calculator · FL Citizens Property: Stay or Switch · FL Insurance After 2025 Hurricane Season
The Numbers Letter
Free weekly: insurance savings, coverage tips, and state-by-state cost breakdowns.

Join thousands of homeowners, renters, and investors getting smarter about insurance every week.

Subscribe Free →