If you own a home in Florida, you may have heard that repairing more than a quarter of your roof forces you to replace the whole thing. That was true for years, and it caught a lot of homeowners off guard after a storm. The good news is that a 2022 law changed it, and for most Florida homes the rule no longer forces a full replacement. Whether it applies to you comes down to a single date. Here is the plain-English version.
General information, not legal advice
This explains the rule in general terms. Building officials and insurers apply it case by case, and the details of your roof and county matter. Confirm your own situation with your local building department, your insurer, or a licensed pro before you rely on it.
What the 25% rule actually says
The rule lives in the Florida Building Code, in the Existing Building code, section 706.1.1, and it is authorized by Florida Statute 553.844. In plain terms: if more than 25 percent of a roof, or of a distinct roof section, is repaired, replaced, or recovered within any 12-month period, the entire roof or section normally has to be brought up to the current code.
Because bringing an old roof fully up to code usually means tearing it off and starting over, crossing the 25 percent line historically meant a full replacement. That is the version most people have heard about.
The 2022 change that lets most homes off the hook
In 2022, Florida passed a law, Senate Bill 4-D, that added a major exception. If your roof was built, repaired, or replaced under the 2007 Florida Building Code or any later edition, you can now repair just the damaged portion, even when more than 25 percent is affected. You are no longer forced to replace the entire roof.
The date that decides everything: March 1, 2009
The 2007 code took legal effect on March 1, 2009. So the practical test is simple. Was your roof permitted on or after March 1, 2009? If yes, the exception protects you and a partial repair is allowed. If your roof predates that date, the old whole-roof rule can still apply. Your permit date is on file with your county building department, and it is the first thing worth looking up.
How it works after a storm
Say a hurricane damages 40 percent of the shingles on your main roof. What the code requires depends entirely on that permit date:
- Permitted on or after March 1, 2009: the code lets you repair only the damaged portion to current standards. There is no forced full replacement.
- Older than March 1, 2009: going over 25 percent can still trigger a full replacement to current code.
This directly affects your insurance payout, because it changes what the code requires, and the code is what your policy (and any ordinance or law coverage) has to pay for. Many adjusters still default to recommending a full replacement, so pulling your permit record to prove a post-2009 install is a strong way to push back. When you are ready to file, our guide on how to file a roof insurance claim walks through the process step by step.
It is measured by roof section, not the whole house
One important detail trips people up: the 25 percent is calculated per roof section, not across your entire roof. A section is separated by things like a change in roofing material, a wall, or a change in elevation. Ordinary ridges and valleys do not divide sections. That has two consequences worth knowing:
- Tile and shingle areas count as separate sections, each measured on its own.
- Heavy damage to one small section can trip the rule for that section, even if it is a small share of your whole roof.
What about 2026 and the new code?
As of 2026, the Florida Building Code in force is the 8th Edition, from 2023. The 9th Edition is scheduled to take effect on December 31, 2026. The 25 percent rule and the 2007-code exception carry forward, and because the exception is written into state law rather than just the code, a code update cannot quietly remove it. If you are reading this after the 9th Edition lands, it is still worth confirming the current details with your building department.
“In Florida, the whole thing comes down to one question: was your roof permitted on or after March 1, 2009? Find that date before you accept any repair-or-replace decision.”
Repair or replace, either way
Whether the rule points you toward a repair or a full replacement, it helps to know the numbers going in. See what a new roof runs locally in our guide to roof replacement cost in Florida, and how the state climate shapes roof life in how long a roof lasts in Florida.
With Hommy you can post your job once and get quotes from vetted Florida roofers who know the code inside out, each with real ratings from other homeowners, so you get an honest read on whether you truly need a repair or a replacement.
