What was the old 25% roofing rule in Florida?

Key takeaway

SB-4D (effective May 26, 2022) softened the old 25% rule. If your roof was built to the 2007 Florida Building Code or later (roughly, permitted on or after March 1, 2009), repairing more than 25% of it generally does not force a full replacement. Only roofs built to older codes still hit that trigger.

For years, Florida’s building code included what people called the “25% rule”: if you repaired, replaced, or recovered more than 25% of a roof within any 12-month period, the entire roof section had to be brought up to current code. That was effectively a full replacement, and it caught a lot of homeowners off guard after storms.

What did SB-4D change about the 25% roof rule?

Senate Bill 4-D, which took effect May 26, 2022, added an important exemption. The full-replacement trigger no longer applies if your existing roof was built in compliance with the 2007 Florida Building Code or any later edition. In that case, you can repair the damaged portion without being forced to tear off and replace the whole roof, as long as the repair itself is code-compliant.

As a practical rule of thumb, roofs permitted on or after March 1, 2009 were built under the 2007 code or newer, so they generally qualify for the exemption. Roofs older than that, built to pre-2007 codes, still fall under the original 25% trigger.

What does the SB-4D 25% rule mean for your roof?

  • Newer roof, localized damage? You can likely repair just the damaged area instead of replacing the whole roof. That can save you a great deal of money.
  • Older roof (pre-2007 code)? If damage exceeds 25%, a full replacement may be required by code — which, for an older roof, is often the sensible outcome anyway.
  • Either way, the repair or replacement still has to meet current HVHZ requirements for the work being done.
RelatedRepair or replace? How to tellThe 15-year roof-age rule is a separate, insurance-side rule

How do you find out which side of the 25% rule you’re on?

The deciding fact is when your roof was permitted. You can usually find this in your property records or your closing documents, and Miami-Dade keeps permit history searchable. When we inspect, we’ll factor your roof’s code era into the recommendation, because it directly affects whether a repair is even an option.

Diagram of the six-stage permit and inspection sequence for a roof replacement, from permit application through to permit close-out.
If the rule pushes you to a full replacement, this is the sequence that follows. Open full size

Frequently asked questions

So is the 25% rule gone?
Not entirely — it still applies to roofs built to pre-2007 codes. What SB-4D did was exempt roofs built to the 2007 code or later from the full-replacement trigger. So for most newer roofs, the rule effectively no longer forces a total replacement after partial damage.
How do I know what code my roof was built to?
The most reliable indicator is the permit date. Roofs permitted on or after roughly March 1, 2009 were built under the 2007 code or newer and generally qualify for the exemption. Permit records are searchable through Miami-Dade; we’ll look this up as part of an inspection.
Does this mean my insurer can't require a full replacement?
SB-4D is about what the building code requires. Your insurance policy and the extent of covered damage are separate questions. A claim can still result in a full replacement based on the damage and your policy — the code exemption just means code isn’t the thing forcing it.
My roof is from the 1990s and was damaged. What now?
A pre-2007-code roof that’s damaged beyond 25% may require full replacement under the original rule. For a roof that age, replacement is often the better long-term move regardless. We’ll give you the honest assessment either way.
Even under 25%, when does repairing stop making financial sense?
The 25% threshold (codified at F.S. 553.899) is a legal trigger, not a financial one. Even when damage is well under 25% and code doesn’t force a full replacement, repeated patch repairs on an aging roof add up. A common rule of thumb: once cumulative repair costs approach roughly a third to half of a full replacement, or the roof is within a few years of the end of its expected service life, replacing outright is usually the better value even though it isn’t required. We’ll run the real numbers for your roof rather than lean on a rule of thumb.

The code era of your roof can be the difference between a repair and a full replacement. We check it before we recommend anything, because it changes what you’re even allowed to do.