Wind Mitigation Inspections and Your Insurance Discount

Most South Florida homeowners are paying a premium calculated on assumptions about their house that the insurer has never verified. When a carrier has no wind mitigation form on file, it prices as though the house has none of the features. Many houses have several.

What the inspection actually is

A licensed inspector, general contractor, building inspector or engineer visits the property, photographs specific construction details, and completes the Uniform Mitigation Verification Inspection Form, OIR-B1-1802. It is a standard form across every Florida carrier, which is why one inspection works no matter who you are insured with or who you switch to.

It takes around an hour and usually involves attic access, because several of the categories can only be verified from inside the roof structure. The completed form goes to your insurer, who reprices the wind portion of your premium.

The seven categories, and what each looks for

1. Building code

The year the home was built or last re-roofed, and whether it was built to a code edition with meaningful wind provisions. This is fixed history and not something you can change, except through a permitted re-roof.

2. Roof covering

Whether the roof covering meets current Florida Building Code or Miami-Dade product approval requirements, evidenced by the permit record and the product on the roof. A permitted modern re-roof scores here; an unpermitted one usually cannot.

3. Roof deck attachment

How the plywood or sheathing is fastened to the trusses: staples, 6d nails, 8d nails, and at what spacing. Older South Florida homes are commonly stapled, and re-nailing during a re-roof improves the score permanently.

4. Roof-to-wall attachment

How the roof structure connects to the walls: toe nails, clips, single wraps or double wraps. This is usually the largest single discount step on the whole form, because it is the connection that decides whether the roof stays on the house.

5. Roof geometry

Hip, gable, or other. A hip roof, sloping on all four sides, performs measurably better in high wind than a gable and is scored accordingly. Not something you would change for the discount, but worth knowing you have.

6. Secondary water resistance

Whether a sealed secondary water barrier exists over the deck. Required on High Velocity Hurricane Zone re-roofs, and it earns a credit here, which is one reason the cost of it is not really a cost.

7. Opening protection

Shutters, impact-rated windows and doors, and garage door rating. The other large mover on the form. The catch is that it scores to the weakest opening: one unprotected window can cost you the whole category.

Key takeaway: Categories 4 and 7 produce most of the money. Categories 3 and 6 are the ones a re-roof can improve.

What it saves

Honest answer: it varies widely, and anyone quoting a single number is guessing about your house.

What is consistent is the structure. Wind coverage is a large share of a South Florida homeowner premium, and mitigation credits apply against that portion rather than the whole policy. A home moving from toe nails to documented clips, with a hip roof and a secondary water barrier recorded, can see a substantial annual reduction. A home already scored at its maximum sees nothing, which is still worth knowing.

The economics rarely fail: a one-off cost under $150 against a discount that recurs annually for five years before re-inspection. Even a modest reduction returns the cost several times over. The Florida Office of Insurance Regulation publishes consumer information on mitigation discounts at floir.com.

Timing: order it right after a re-roof

This is the part homeowners most often get wrong, and it costs them a year of discount.

A permitted re-roof can improve roof covering, roof deck attachment and secondary water resistance simultaneously. Those three scores change on the day the final inspection passes. If your wind mitigation form is three years old, your insurer is still pricing the old roof.

So the sequence is: complete the re-roof, pass final inspection, order the wind mitigation inspection, send the new form to your carrier and ask for the policy to be rerated. Some carriers will backdate to the completion date; many will not, which is the argument for doing it immediately rather than at renewal.

If you are planning a replacement, it is also worth asking your contractor which optional upgrades would change a score. Improved roof-to-wall connections, where structurally feasible, are the clearest example. Our wind mitigation installation work covers those upgrades, and commercial wind mitigation covers the equivalent on commercial buildings.

How to get one, including free routes

1. My Safe Florida Home. When the programme is funded, it provides free wind mitigation inspections to qualifying homeowners, along with matching grants for hardening improvements. Availability changes by legislative cycle, so check current status directly.

2. Your insurer or agent. Some carriers arrange or subsidise the inspection, because a documented home is a better-understood risk for them too. Ask before paying for one.

3. An independent inspector. $75 to $150 in most of South Florida. Confirm they are licensed to complete the form and that the fee includes sending it to your carrier.

One caution worth stating plainly: an inspection form is a record of what exists, not a negotiation. If a provider offers to score features they cannot verify, walk away. A form with unsupported entries is insurance fraud exposure sitting in your file, and it will be revisited if you ever make a claim.

Common reasons a form scores worse than the house deserves

A wind mitigation form records what the inspector can verify. Anything that cannot be verified is scored at the lowest value, which means a well-built house can score badly for entirely administrative reasons.

Four recurring causes:

• No attic access. Roof deck attachment and roof-to-wall connection can usually only be confirmed from inside the roof structure. A sealed or inaccessible attic means both categories default downward. If access is difficult, arrange it before the inspection rather than rescheduling afterwards.

• Missing permit records. The roof covering category leans on the permit history. A re-roof that was never permitted often cannot be credited, which is one more cost of unpermitted work that nobody mentions at the time.

• One unprotected opening. Opening protection scores to the weakest opening on the property. A house with impact glass throughout and one unrated garage door or a single unshuttered bathroom window loses the category outright.

• Insulation covering the connections. Blown insulation packed against the truss-to-wall connection can genuinely prevent verification. An inspector who cannot see the strap cannot record it.

All four are worth checking before the inspector arrives, because a re-inspection costs the fee again. If a category is scored low, ask the inspector specifically why, and whether it was a construction finding or a verification problem. Those are two different situations with two different remedies.

Key takeaway: A low score is not always a weak house. Sometimes it is an inaccessible attic and a sealed hatch.

What to do with the form once you have it

• Send it to your carrier and ask in writing for the policy to be rerated, then confirm the credit actually appeared on the declarations page. It does not always apply automatically.

• Keep a copy with your policy documents. When you shop the policy, the same form goes to every quoting carrier, which makes comparison quotes meaningfully more accurate.

• Note the expiry. Five years, so diary it.

• Re-order it after any qualifying improvement, not at the next renewal.

• Check the credit survived a carrier change. Mitigation credits do not follow you automatically when a policy moves, and a lapsed credit on a new policy is one of the easier premium errors to correct once you notice it.

One more use worth knowing about: the form is a negotiating document. When shopping carriers, sending the same OIR-B1-1802 to every quoting insurer removes the guesswork from their pricing, and quotes come back tighter and more comparable. Carriers price uncertainty conservatively, so a documented house is often quoted better simply for being known. That effect is separate from the mitigation credits themselves and it is why the form is worth having even on a home that scores poorly.

The form is also useful outside insurance. It documents roof deck attachment, roof-to-wall connection and secondary water resistance in one page, which is a genuinely useful record when selling the house, and a helpful starting point for any roof insurance claim. Our guide to funding a Florida roof covers how mitigation grants fit alongside the other routes, and a free roof inspection will tell you which categories your roof could realistically improve.