Quick answer: The number to look at on a Florida policy is not the premium. It is the hurricane deductible, and it is expressed as a percentage of the insured value rather than as a fixed sum. Raise the insured value and the deductible rises with it, which means the figure an owner would actually have to find after a storm grows quietly as the building is revalued.
Buyers compare Florida properties on premium because premium is the number quoted first. It is the wrong comparison. Two policies at similar annual cost can leave an owner in entirely different positions after a storm, and the difference sits in the deductible structure rather than in the price.
What the percentage does
| Insured value | 2% deductible | 5% deductible |
|---|---|---|
| $400,000 | $8,000 | $20,000 |
| $600,000 | $12,000 | $30,000 |
| $900,000 | $18,000 | $45,000 |
That table is the whole point. The deductible is not a fixed cost of insuring; it is a contingent liability that scales with the value being insured.
Two consequences follow that owners routinely miss.
The first is that revaluation raises it. When replacement cost estimates rise, as construction costs have, the insured value rises, the premium rises, and the deductible rises too. An owner who accepted a 5% deductible when the building was insured at 400,000 dollars is now carrying a larger exposure at 600,000 without having agreed to anything new.
The second is that it applies per named storm in many structures. A season with two landfalls is not necessarily one deductible.
Why the roof decides the terms
Roof age is the single variable carriers weight most heavily, and the reason is claim severity rather than frequency. A roof that fails admits water into the whole structure, which converts a wind claim into a total interior loss.
Carriers respond by setting maximum ages for roof coverings and tightening them periodically. The current tightening reaches stock built in the 2000s, which is a large share of Florida’s investor inventory and includes a great many properties whose owners consider the roof to be in reasonable condition.
The practical effect for a buyer is that a roof can be sound, watertight and functional, and still be old enough to change the terms available or to make coverage difficult to place at all.
Three documents settle the position and all three are obtainable during diligence:
- The current declarations page, which shows the deductible structure the present owner actually holds.
- Roof documentation: age, covering, and any permit record for replacement.
- A wind mitigation inspection report, which is what carriers price against and which frequently pays for itself.
The decision an owner actually faces
A higher percentage deductible lowers the premium. That trade is legitimate and it is not universally wrong.
It is right where the premium saving is genuine and the owner holds liquid reserves comfortably above the deductible. It is wrong where the deductible exceeds what the owner could produce in the weeks after a storm, because at that point the policy does not function as insurance. It functions as a large bill arriving at the worst possible moment.
For a rental property the calculation is sharper still, since a storm that triggers the deductible usually also stops the income that would have paid it.
Our reading: treat the deductible as the primary term and the premium as secondary. An investor comparing two Florida properties should compare the sum they would have to find after a landfall, not the sum they pay each year to avoid thinking about it.
Where this bites hardest on purchase decisions is set out in our Charlotte County STR rules, where roof vintage separates otherwise identical houses. The premium side is covered in our Florida insurance premium update, the effect on returns in our Florida rental yield guide, the document list in our due diligence guide, and market conditions in our Florida inventory tracker.
Frequently Asked Questions
As a percentage of the insured value of the building, commonly 2 to 5%, rather than as a flat dollar amount. On a property insured for 600,000 dollars a 5% deductible is 30,000 dollars.
No. It applies to named-storm or windstorm damage. Ordinary perils fall under the standard deductible, which is usually a much smaller flat sum.
Because roof failure drives the majority of wind claim severity. Carriers set age limits on roof coverings and tighten them periodically, which currently affects stock built in the 2000s.
Sometimes, if the premium saving is real and the owner holds reserves to cover the deductible. It is a poor decision when the deductible exceeds what the owner could produce after a storm.
Sources: deductible ranges and roof age tightening are Florida Estate observations from binders and renewals reviewed across 2025 and 2026, and are not carrier-published figures. Worked deductible amounts are arithmetic on the stated percentages. Verified 27 August 2026.
Read the deductible before you read the premium
Send a declarations page or a property address. We identify the hurricane deductible in dollars, the roof position, and what a wind mitigation report would likely change.