Florida's 25% Roof Rule & ACV Coverage: Coral Gables
Two things changed for South Florida homeowners this year, and almost nobody has connected them.
The first is a mortgage rule. In March 2026, Fannie Mae and Freddie Mac announced they will again accept actual cash value (ACV) roof coverage on loans for single-family homes and condos, rather than requiring replacement-cost value (RCV) coverage on the roof. The rest of the house still requires replacement-cost protection — this applies specifically to the roof. The same March update also introduced related condo-specific insurance provisions, including a cap on per-unit master-policy deductibles, that take effect for loan applications on or after July 1, 2026 — confirm with your lender which specific provisions apply to your loan and closing date.
The second is not new, but it is what most homeowners actually collide with after a storm: the Florida Building Code’s 25 percent rule, and the statutory exception the Legislature carved into it. That rule determines whether a partial roof repair is legal, or whether the county is going to require the entire roof section brought up to current code.
Put those together and you get the question every Coral Gables and Pinecrest homeowner should be able to answer before the next named storm: if a quarter of my roof comes off, who pays for the other three quarters — and am I even allowed to just patch it?
Here is how it actually works.
What the 25 percent rule says
The core provision is straightforward. In its long-standing form, the Florida Building Code holds that not more than 25 percent of the total roof area or roof section of an existing building may be repaired, replaced or recovered in any 12-month period unless the entire roofing system or roof section is brought into conformance with the current code.
The intent was reasonable: prevent an endless series of 24-percent patches that keep an obsolete roof assembly on a house indefinitely while never triggering modern wind-uplift, attachment or secondary-water-barrier requirements.
The consequence, for homeowners, was harsh. In practice it meant that a storm that damaged a third of a roof could obligate you to replace all of it — to current code — with your insurer arguing about how much of that they owed.
The exception that changed the answer for most Coral Gables homes
Following the 2022 special legislative session on property insurance (SB 4-D), the Legislature created an exception, and it is the single most useful thing for a South Florida homeowner to understand.
In substance: if an existing roofing system or roof section was built, repaired or replaced in compliance with the 2007 Florida Building Code or any subsequent edition, and 25 percent or more of it is being repaired, replaced or recovered, then only the repaired, replaced or recovered portion must be constructed to the code currently in effect. The undamaged remainder does not have to be torn off.
That single provision splits the Coral Gables and Pinecrest housing stock into two very different situations:
If your roof was installed or replaced in 2008 or later and was permitted properly, a large partial repair is generally viable. You fix the damaged section to today’s HVHZ standard, and the rest stays.
If your roof predates the 2007 code, or you cannot document that it was permitted to it, you are back under the original rule — cross 25 percent and you are likely replacing the whole section.
This is precisely why permit history matters, and why we tell every buyer of a 1940s–1990s Gables or Pinecrest home to pull the property’s permit record before closing. On a house of that vintage, the difference between “documented 2011 reroof” and “undocumented roof of unknown age” can be a six-figure gap in what a future storm costs you.
Rules and interpretations do change, and local building officials apply them to specific facts. Confirm how the rule applies to your roof with Miami-Dade County or your municipal building department, and with a licensed roofing contractor, before you make a claim decision based on it.
Where the ACV change lands on top of this
Now layer the insurance side.
Replacement cost value (RCV) pays what it costs to put a new roof on today. Actual cash value (ACV) pays that number minus depreciation for the age and condition of the roof you had. On a 16-year-old tile or shingle roof, that depreciation is not a rounding error — it can be a very large share of the claim.
Florida law (Section 627.7011, Florida Statutes) has for several years constrained insurers from refusing to write or renew a policy solely because of roof age when the roof is less than 15 years old. For roofs 15 years or older, a homeowner generally has the right to have the roof inspected and, if it shows sufficient remaining useful life, to keep coverage in place on that basis. But nothing in that law prevents an insurer from writing the roof on an ACV basis, and ACV roof endorsements have become common in the Florida market on older roofs.
What changed in March 2026 is that a major structural obstacle to that practice went away. Previously, a homeowner with a conforming Fannie or Freddie mortgage effectively needed RCV coverage on the whole dwelling, roof included. Now the roof can be written ACV and the loan still conforms.
The trade is explicit, and the FHFA’s own framing acknowledges it: lower premium now, more out-of-pocket exposure after damage. For a homeowner in a market where roofs are the single most expensive storm-exposed component of the house, that is a decision worth making deliberately rather than discovering on a renewal.
The scenario to run before hurricane season peaks
Here is the exercise. It takes ten minutes and it is the most useful thing you can do with this article.
- Find your roof’s age and permit record. Pull the permit history for your address through Miami-Dade’s property and permitting records. You are looking for the last roofing permit and its final inspection.
- Determine whether it is 2007-code-or-later. This determines whether the 25 percent exception is available to you.
- Read your declarations page for the roof. Look for a roof surfacing payment schedule, an ACV roof endorsement, or a windstorm/hurricane deductible expressed as a percentage. Many South Florida hurricane deductibles are 2%, 5% or 10% of the dwelling coverage — on a $1.5M Coral Gables home, a 5% deductible is $75,000 before your carrier pays anything.
- Multiply it out. If a storm damages 40% of your roof: does the exception let you repair only that portion? What does the repair cost? What does depreciation take off if the roof is written ACV? What does the deductible take off after that?
Most homeowners who run this find the gap is larger than they assumed — and that the gap is driven less by the headline coverage limit than by the interaction of roof age, ACV, and a percentage deductible.
What this means for how you should be re-roofing in the Gables
If you are already planning a roof replacement, three things follow from all of the above.
Do it as a documented, permitted, full-code replacement. A properly permitted roof with a final inspection resets your position under the 25 percent rule for the next twenty years, and gives you a document that matters to both your insurer and a future buyer.
Get the wind mitigation inspection done afterward and file it. The roof-deck attachment, roof-to-wall connections, secondary water barrier and roof geometry recorded on that form are what drive wind-mitigation credits. A new roof that never gets documented on a mitigation form is money you spent without buying the premium reduction it earned.
Understand that in Miami-Dade you are building to HVHZ standards regardless. The High-Velocity Hurricane Zone requirements apply to the work being done — product approvals or Notices of Acceptance for every component, specific attachment schedules, and an inspection sequence that includes in-progress inspections you cannot skip. That is not the place to accept the cheapest bid; it is the place to verify that the contractor is pulling the permit in their own license and that the products specified carry current Miami-Dade approvals.
The timing reality in September
We are in the statistical peak of the season. Two practical notes.
If you have damage now, document it immediately — dated photographs, from the ground and from any safe vantage point, before any temporary repair. Emergency tarping to prevent further damage is generally both permitted and expected under a policy’s duty to mitigate; permanent repairs made before an adjuster inspects can complicate a claim.
If you do not have damage, this is the window to fix the paperwork rather than the roof: pull the permit record, read the declarations page, and know your number. Re-roofing schedules in Miami-Dade compress hard after any significant storm, and the homeowners who get on a good crew’s calendar first are the ones who already knew what they needed before the storm formed.
FAQ
What is Florida’s 25 percent roof rule? It is the Florida Building Code provision holding that no more than 25 percent of a roof area or roof section may be repaired, replaced or recovered within any 12-month period unless the entire roofing system or section is brought up to current code. It exists to stop repeated partial patches from indefinitely preserving an outdated roof assembly.
Does the 25 percent rule still require a full roof replacement in Miami-Dade? Not automatically. Under the exception the Legislature added after the 2022 special session, if your existing roof was built, repaired or replaced in compliance with the 2007 Florida Building Code or a later edition, only the damaged portion being repaired must meet current code. Roofs predating that generally fall back under the full rule. Confirm the application to your specific roof with the Miami-Dade or municipal building department.
What is the Fannie Mae and Freddie Mac roof insurance change in 2026? In March 2026, Fannie Mae and Freddie Mac updated their requirements to again accept actual cash value coverage on roofs for single-family homes and condos rather than mandating replacement-cost coverage on the roof. The same update included related condo-specific insurance provisions taking effect for loan applications on or after July 1, 2026. The remainder of the dwelling still requires replacement-cost coverage. Confirm the specifics and timing with your lender.
Is ACV roof coverage a bad idea in South Florida? It is a trade, not a mistake. It lowers premium and increases what you pay after a loss, because depreciation is subtracted from the claim. On a new or nearly new roof the depreciation gap is small; on a 15-to-20-year-old roof in a market with percentage hurricane deductibles, it can be very large. Run the numbers on your own roof age and deductible before accepting it.
Can an insurer drop me because of my roof’s age in Florida? Florida law (Section 627.7011, Florida Statutes) restricts insurers from refusing to issue or renew solely because of roof age when the roof is under 15 years old. Older roofs have far less protection, and insurers retain other tools — including writing the roof on an ACV basis. Legislation in this area is proposed frequently and does not always pass, so verify current requirements with your agent.
Get a straight answer on your roof
Karma Construction Group has been building and roofing since 2012, and we work in Coral Gables, Pinecrest and Coconut Grove where HVHZ product approvals, permit history and inspection sequencing are not optional details — they are the job.
If you want an honest read on whether your roof is a repair or a replacement, and what your permit record says about your exposure, call 202-798-7663 or request a free consultation at karmaconstructiongroup.com.
In Miami-Dade, our roofing work runs through MIA Roofers, our South Florida affiliate. Its guide to roof insurance claims in Miami-Dade goes deeper on actual cash value versus replacement cost, and on what to do if your insurer is non-renewing you over the roof.