Where the thresholds came from
Florida's roof-age thresholds were not handed down; they accreted. Hurricane Andrew in 1992 taught the state that roofs were the failure point of record, and the statewide Florida Building Code that followed in March 2002 rebuilt the engineering baseline. Two decades of storms, claim litigation, and reinsurance repricing then taught carriers a second lesson: the age of a roof predicted losses better than almost anything else on the application. By the early 2020s, age had hardened from one factor among many into the first gate of Florida underwriting.
The gate produced abuses in both directions: carriers refusing serviceable roofs by birthday, and roofing solicitations engineering claims out of aging ones. The legislature stepped into both sides, and the current threshold system is the compromise that emerged.
The mid-teens: scrutiny begins
Around fifteen years, a shingle roof stops being a line item and becomes a question. Carriers begin asking how the age is documented, whether a roof condition or 4-point inspection exists, and what an inspector estimates as remaining life. Nothing dramatic happens to a well-documented roof at this line; what changes is the burden of proof. A homeowner with a permit-dated fourteen-year-old roof renews quietly. A homeowner whose roof age is an estimate inherited from the year built starts receiving inspection requirements, because to the carrier that roof might be any age at all.
This is the band where the 2022 reforms matter most. Under the reform statute, an insurer generally cannot refuse to issue or renew a homeowners policy solely because a roof is more than fifteen years old; the homeowner has the right to an authorized inspection, and if that inspection shows five or more years of useful life remaining, age alone cannot be the refusal. The protection is real but procedural: it rewards the homeowner who obtains the inspection and keeps the paper.
Twenty years: the market's practical edge
Approaching twenty years, a shingle roof exits most private carriers' new-business appetite regardless of protections, because underwriting is forward-looking: even a roof passing today's inspection has little runway left, and the carrier is pricing the next five years, not the last fifteen. The market that remains is surplus lines, specialists, and Citizens, each with its own inspection regime. Homeowners in this band are no longer managing a premium; they are managing a replacement timeline, and the only strategic question is whether the replacement happens on their calendar or on a non-renewal notice's.
The two ages every roof has
Underwriting does not measure shingles; it reads records. Every Florida roof therefore has two ages: the actual age, known to whoever paid for the last replacement, and the documented age, which is the year of the last county roofing permit, or, absent one, the year the house was built. The gap between the two is the most consequential paperwork problem in Florida homeownership. A roof replaced in 2015 without a permit reads, on every carrier's screen, as original to the 1985 house beneath it: a forty-year-old roof by the only evidence that counts.
This is why permit-backed age is the spine of our property reports. When the county record shows the permit, the report displays the number itself, the citable fact that moves an underwriting decision. When it does not, the report says so plainly, because an estimated age flags exactly the documentation gap the owner should close before the market asks.
Tile, metal, and the longer clocks
The threshold system is material-relative. Tile and metal roofs, with service lives commonly running decades past shingle, face the same sequence of scrutiny and market-thinning shifted into their thirties and beyond. The mechanics are identical: documentation beats estimation, remaining-life opinions decide borderline cases, and the underlayment beneath a tile roof, which ages faster than the tiles, is what inspectors actually probe. Owners of long-clock roofs get one additional advantage: more years in which a single wind-mitigation inspection keeps paying for itself.
Operating inside the system
The thresholds reward sequence. Before the mid-teens, make the record airtight: confirm the replacement permit exists and closed with a final inspection, and file a current wind-mitigation form. Inside the scrutiny band, buy the inspection before the carrier orders it, because a remaining-life opinion obtained on your schedule is leverage, while one obtained on theirs is triage. Past the band, price the replacement against what the thin market is charging you annually, and remember that a new permitted roof resets not just the premium conversation but the wind-credit picture and every future inspection for fifteen years.
None of this requires believing the thresholds are fair. It requires knowing where they sit, and holding the one thing that moves them: the record.