If you own a home in Broward or Miami-Dade, a wind mitigation inspection is one of the few pieces of paper that can lower your insurance bill instead of raising it. It documents how your house is built to resist hurricane wind, and Florida law requires insurers to give premium credits for specific features. The catch is that those credits only apply to what an inspector can actually verify on a standard state form. Here is what that form looks for, why it matters more here than anywhere else in Florida, and how to make sure your home gets full credit for what it already has.
What a wind mitigation inspection actually is
A wind mitigation inspection is a short, non-invasive survey of the features on your home that resist hurricane-force wind. In Florida it is recorded on a single standardized document — the OIR-B1-1802 Uniform Mitigation Verification Inspection Form — and it must be completed by a licensed professional: a general, building or roofing contractor, a licensed home inspector, a professional engineer, or an architect. The inspector photographs each feature, checks a series of boxes, and signs. Your insurer reads those boxes and applies the discounts the state requires.
It is not a pass/fail test and it is not a code inspection — it simply verifies what already exists. You cannot “fail” one. But a home that lacks documentation, or was built before certain standards took hold, will earn fewer credits than a home that can prove what it has.
Why it matters more in Broward and Miami-Dade
Broward and Miami-Dade are the only two counties in Florida designated a High-Velocity Hurricane Zone (HVHZ). Two things follow from that. First, base insurance premiums here are among the highest in the country, so the percentage discounts a good report unlocks are worth more in raw dollars than the same discounts elsewhere. Second, homes built or re-roofed under the HVHZ provisions of the Florida Building Code already meet stricter standards — which means many South Florida homeowners are sitting on credits they have never claimed.
If your roof was permitted after the 2002 code took hold, or you have added impact windows, there is a real chance an up-to-date wind mitigation report would lower your premium. Insurers do not apply these discounts automatically. You have to hand them the form.
The seven features insurers actually price
Almost every credit on the OIR-B1-1802 traces back to a short list of features. Here is what each one is and why it moves your premium.
1. Building code compliance (the year that matters)
The form starts with when your home was built and permitted. A home built to the 2002 Florida Building Code or later — or with a roof permitted after that date — is treated as inherently more wind-resistant. In the HVHZ the relevant code adoption is stricter and earlier than most of the state, which tends to work in a South Florida homeowner’s favor.
2. Roof covering
The inspector checks whether your roof covering — shingles, tile or metal — meets the Florida Building Code and, critically here, whether it carries a current product approval. In Broward and Miami-Dade that means a Miami-Dade Notice of Acceptance (NOA); a statewide Florida Product Approval is not sufficient in the HVHZ. A covering with proper approval and permit documentation earns credit, while one without paperwork often does not, even if the material itself is perfectly good.
3. Roof deck attachment
This is how the plywood or OSB deck is fastened to the trusses — nail type and spacing. The strongest common rating is 8d nails at 6 inches on center. Newer HVHZ roofs are built to demanding deck-attachment standards, so this line frequently earns a meaningful credit for South Florida homes.
4. Roof-to-wall attachment
How the roof structure is tied to the walls is the single most valuable line on the form. The ladder runs from weakest to strongest: toe nails, clips, single wraps, and double wraps (hurricane straps). The gap between toe nails and clips or straps can be a large swing in premium, because roof-to-wall failure is how houses come apart in a hurricane.
5. Roof geometry
A hip roof — one that slopes down on all four sides — sheds wind better than a gable or flat roof and earns its own credit. You cannot change your roof shape just for the discount, but if you already have a hip roof, make sure the inspector documents it.
6. Secondary water resistance
Also called a secondary water barrier or “sealed roof deck,” this is a self-adhering membrane applied over the deck seams beneath the roof covering. If the covering blows off in a storm, it keeps water out of the house. It is an HVHZ requirement on many newer roofs and earns a credit — but only if it can be verified, usually from the roofing permit and photos taken during installation.
7. Opening protection
Every window, door, skylight and garage door is checked for impact protection. In the HVHZ, every glazed opening must be impact-rated or protected by a code-approved shutter — there is no third option. To earn the full “all openings protected” credit, every opening must qualify; a single unprotected window can cost you the discount. This is also where Miami-Dade NOA documentation matters, because the credit rewards code-approved protection, not just any storm panel.
How much a good report can save
Wind mitigation credits are applied to the wind portion of your premium, which in the HVHZ is a large share of the bill. Homeowners who move from an old, credit-free policy to a fully documented modern roof and protected openings sometimes see the wind portion of their premium fall substantially.
Two honest cautions. These are ranges, not guarantees — the exact discount depends on your insurer’s filed rates, your home, and which features actually verify. And a report is only worth what it documents: if your roof-to-wall connection is toe nails and your windows are unprotected, the form will say so, and no credit appears. The value is in claiming what you already have.
The My Safe Florida Home connection
If your report comes back weak, the state’s My Safe Florida Home program is one path to improving it. Eligible homeowners can receive a free wind mitigation inspection and a 2:1 matching grant of up to $10,000 — the state pays two dollars for every one you spend — toward upgrades like impact windows, reinforced garage doors, and roof improvements that then show up on a new mitigation form. Funding runs in cycles and is prioritized for applicants 60 and older, so check current status at mysafeflhome.com. Renomatix is not affiliated with, endorsed by, or acting on behalf of any government agency or program, and cannot apply on your behalf.
Why reports come back with fewer credits than they should
Two homes built the same year can earn very different credits, usually for paperwork reasons:
- Missing permits. A re-roof done without a permit may not verify for covering or secondary-water-resistance credits, even if the work itself was good
- Photos not taken during installation. Secondary water resistance and deck attachment are hard to verify after the covering is on
- One unprotected opening. A single old window or an unrated garage door can drop you from “all openings protected” to a lesser credit
- An inspector unfamiliar with the HVHZ. Miami-Dade NOA and product-approval documentation is easy to miss if you don’t work here
- An expired report. Many insurers accept a wind mitigation form for about five years, after which it must be renewed
Choosing an inspector who knows the HVHZ rules — and keeping your roofing permit and product-approval numbers on hand — is often the difference between a full-credit report and a partial one.
Frequently asked questions
How much does a wind mitigation inspection cost in South Florida?
Privately, a wind mitigation inspection typically runs in the low hundreds of dollars, and many homeowners recover that in the first year through premium credits. Eligible homeowners may qualify for a free inspection through the state’s My Safe Florida Home program. These are typical market ranges, not a quote.
How long is a wind mitigation report valid?
Most Florida insurers accept the OIR-B1-1802 form for about five years from the inspection date. After that — or after a re-roof or window upgrade — you generally need a new inspection to keep or increase your credits.
Can a wind mitigation inspection raise my premium?
No. The report can only add credits or leave your premium unchanged. If a feature does not qualify, that credit simply is not applied — the inspection itself does not increase your rate. It is one of the few inspections that can only help.
Do impact windows alone earn the opening-protection credit?
Only if every glazed opening is protected. In the HVHZ, one unrated window, door or garage door can drop you from the full “all openings protected” credit to a partial one. Impact-rated glazing with Miami-Dade product approval on every opening is what earns the full discount.
Getting started
Start by finding your last wind mitigation report and your homeowners policy. If the report is more than about five years old, or you have re-roofed or added impact windows since, a fresh inspection is likely worth ordering. Keep your roofing permit and any Miami-Dade NOA numbers with it — that paperwork is what turns a strong roof into a documented discount.
One free request puts you in front of licensed contractors in our network who work Broward and Miami-Dade — for a re-roof, impact windows, or garage-door upgrades that improve your mitigation report. You get free, no-obligation quotes, you compare them yourself, and you decide, or you walk away. You can verify any Florida license at myfloridalicense.com before you sign anything. This is general information, not tax or insurance advice.