Roof repair, replacement and the 25% rule
The rule that forced a full replacement once a quarter of the roof was damaged no longer applies to newer roofs. If your roof was built, repaired or replaced in compliance with the 2007 Florida Building Code or any later edition, in force from 1 March 2009†, only the damaged portion needs to be brought to current code — however widespread the damage.
On a typical Florida house the difference between a targeted repair and a triggered full replacement runs into tens of thousands of dollars. It turns entirely on when the roof was last done, which is a fact you can establish from permit records in an afternoon.
Which rule applies to your roof
| Your roof | If 25% or more is damaged |
|---|---|
| Built or replaced to the 2007 Florida Building Code or any later edition, in force from 1 March 2009† | Repair only the damaged portion. The rest stays. |
| Older than that | The full-replacement requirement still bites |
Three things have to hold for the exception: the roof was built to that code edition or later, 25% or more is being repaired or replaced, and no local ordinance overrides it — and on that last point, the statute prohibits local governments from amending away the exception†, so a building department cannot legislate the exception away.
A contractor quoting a full replacement on a roof that qualifies for the exception is either mistaken or not looking. Pull the permit history for your address — it is public — and find out when the roof was last permitted and closed. That single document decides which column of the table above you are in.
What drives the cost
- Material. Shingle, tile and metal are very different propositions, in price and in how long they last here. Tile and metal cost more and carry longer insurance tolerance.
- Tear-off and decking. What is found under the old roof frequently changes the number, and rotten decking is common in Florida.
- Code upgrades triggered by the work — secondary water barrier, improved fastening, and other requirements that did not exist when the original roof went on.
- Complexity. Pitch, valleys, penetrations and access all move the figure more than square footage alone suggests.
Treat any single headline price per square foot with suspicion. The spread between a simple shingle re-roof and a complex tile replacement on the same house is enormous, and quotes that do not itemise tear-off, decking allowance and code upgrades are not comparable to each other.
The insurance side, which is usually the real driver
Most Florida roof replacements happen because of insurance rather than leaks. An insurer may not refuse or non-renew solely on roof age under 15 years†, and past that an authorised inspector certifying five years of remaining useful life† blocks a roof-age non-renewal. Knowing that is worth doing before you commit to a replacement you may not yet need.
- Get a new wind mitigation inspection afterwards. A new roof usually improves the rating, and the saving is worth roughly 20–30% of the total premium† of the premium — but only once it is documented.
- Ask about secondary water resistance specifically. It is one of the higher-value credits on the mitigation form and it is cheap to add during a re-roof.
- Keep the closed permit. It is what proves the age to your next insurer and your eventual buyer.
- Consider timing against a claim. If storm damage is involved, the claim and the replacement interact, and doing the work before the adjuster has seen it rarely helps you.
Hiring for it
- Roofing requires a specialty licence. A general contractor licence is not automatically the right one, and this is comfortably over the $2,500† threshold.
- Verify the licence number against the name on the contract, not just that a number exists.
- Be wary of storm-chasing crews. Anyone offering to handle your insurance, waive your deductible, or asking for an assignment of benefits is a problem — assignments are no longer permitted on modern policies and a waived deductible is fraud.
- Get lien releases with every payment. A roof involves suppliers, and suppliers can lien your home even after you have paid the roofer.
- Confirm who pulls the permit — it should be the contractor, never you as owner-builder.
Related
Common questions
What is the 25% roof rule in Florida?
The requirement that a roof be replaced entirely once 25% or more is damaged in a 12-month period. Since 2022 it no longer applies to roofs built, repaired or replaced under the 2007 Florida Building Code or later, which can be repaired in part.
Does the 25% rule still apply in Florida?
Only to older roofs. If yours was built to the 2007 code or a later edition — in force from 1 March 2009 — you may repair just the damaged portion regardless of how widespread it is, and local governments cannot override that.
How do I find out when my roof was last replaced?
Pull the permit history for your address from the building department. It is public, and the closed permit is what establishes the date for both the code question and your insurer.
Will a new roof lower my Florida insurance?
Usually, but only once documented. Get a fresh wind mitigation inspection after the work, since the credits come from that form rather than from the roof itself.
Do I need a licensed contractor to replace a roof in Florida?
Yes, and specifically a roofing specialty licence rather than a general contractor licence. The work requires a permit, which means the licence is not optional.
Should I replace my roof because my insurer says it is too old?
Check the rule first. An insurer may not refuse or non-renew solely on roof age under 15 years, and past that an authorised inspector certifying five years of remaining useful life blocks a roof-age non-renewal.
Roof requirements come from the Florida Building Code, amended by SB 4-D in 2022. Costs vary enormously with material, complexity and what is found beneath the old roof — treat any single per-square-foot figure with caution and compare itemised quotes.