Impact windows and Florida insurance savings, without the sales math

The honest answer to "how much will I save" has three parts. Florida law requires insurers to offer premium credits for documented wind mitigation features (FS 627.0629). The credits apply to the wind portion of your premium, at amounts set by your insurer's own filed schedule, once the features are documented on form OIR-B1-1802. And the only published benchmark worth citing is the FLOIR's worked example showing at least 68 percent off the wind portion for a home with full mitigation features, which is an illustration of the ceiling, not a promise. Your policy will vary. Everything else on this page explains how to make those three parts work for a Lee County home.

Where the money actually is

A Florida premium bundles coverages, and the mitigation credits touch only the wind (hurricane) portion, which in coastal Lee County is commonly the largest slice. That is why identical projects move bills differently in Fort Myers Beach and Lehigh Acres : the island's wind slice is bigger, so the same percentage credit moves more dollars. Ask your agent what your wind portion is; that one number scales every estimate on this page. Source for the credit mechanics: FS 627.0629 and FLOIR .

The classification that gates everything

Opening protection on form OIR-B1-1802 is scored house-wide: windows, doors, sliders, skylights, and the garage door, with the classification following the weakest opening. The practical rules that fall out of that:

Scope projects against the full opening list, not window count. The impact doors page covers the openings homeowners forget.
If you phase the work, plan the final phase to complete the list, then re-document once.
Shutters that cover every opening also document protection; impact glass changes convenience and what happens when nobody is home, not necessarily the classification. The comparison guide treats that choice honestly.

The sequence that captures the credits

1 Baseline with a wind mitigation inspection (about $75 to $150, or free for eligible homeowners via My Safe Florida Home ). Homes often already earn credits nobody filed for.
2 Close the opening gap with a permitted project; the impact windows page and the cost guide cover the spend side.
3 Re-inspect on the current form (revised edition effective April 1, 2026), send it to your insurer, and confirm the credits appear at the next bill. The full chain lives in the Lee County wind mitigation guide .

Claims to walk away from

A specific promised percentage ("cut your insurance 40 percent"), a savings estimate quoted without asking who your insurer is, or any pitch that skips the re-inspection step. None of those survive contact with how the credits actually work, and a seller who starts with them is telling you how the rest of the quote was built.

Frequently Asked Questions

How much will impact windows lower my insurance in Florida?

No honest page can give you a number, because the credits come from your own insurer’s filed rate schedule. What the law requires (FS 627.0629) is that credits for documented wind mitigation features must be offered. The FLOIR has published a worked example showing at least 68 percent off the wind portion of a premium for full mitigation features; treat it as a documented ceiling illustration, and expect your policy to vary.

Why did my premium barely move after new windows?

Three usual causes: the openings were never re-documented on a current OIR-B1-1802 form, one opening (often the garage door) capped the house-wide classification, or the credit applied only to the wind portion of a premium dominated by other charges. All three are checkable, in that order.

Do the credits apply with Citizens or only private insurers?

The mitigation credit requirement applies to residential property insurance rates in Florida generally, Citizens included. The amounts differ by insurer because each files its own schedule; the documentation (form OIR-B1-1802) is the same everywhere.

How often do I need a new wind mitigation inspection?

The completed form is generally valid for five years, or until the home changes. Re-inspect after any project that changes a documented feature, otherwise the improvement exists physically but not on paper, and only paper moves premiums.