There is one Florida Building Code provision that turns more "small repairs" into full replacements than any other: Section 706.1.1, commonly called the 25% Rule. If you're planning any roof repair work and your roof was permitted before March 1, 2009, this rule directly affects your decision — and potentially your budget in a significant way. Here's exactly how it works, how the 2022 legislative changes affect you, and what Caliber looks for before scoping any project.
What the 25% Rule Actually Says
Florida Building Code, Existing Building Volume, Section 706.1.1 states that when the area of a roof section being repaired or replaced exceeds 25% of that section's total area within a 12-month period, the entire section must be brought into compliance with current Florida Building Code standards.
This means:
- If you repair or replace more than 25% of a roof section in any rolling 12-month period, the permit triggers a full code-upgrade requirement for that section
- "Current FBC standards" means updated underlayment, fastener patterns, drip edge, and in many cases hip-and-ridge and ridge ventilation that may not have been required when the roof was originally installed
- This is enforced at the permit level — the building inspector, not the contractor, makes the final call
Key definition: "Roof section" in the code refers to a structurally defined plane of the roof — not the whole roof. A hip roof with four distinct planes has four sections. A repair to one section that exceeds 25% of that section triggers the upgrade requirement for that section only — not the entire roof. However, if the scope touches multiple sections, each is evaluated independently.
The March 2009 Threshold — Why It Matters
Florida Senate Bill 4-D, passed in a 2022 special legislative session, created a critical exemption that fundamentally changed how the 25% rule is applied:
If your roof was permitted on or after March 1, 2009, the rule no longer requires the entire section to be replaced when repairs exceed 25%. Instead, only the damaged portion needs to be repaired to current code. The insurer and building department can no longer force a full replacement purely because of the 25% threshold on newer roofs.
If your roof was permitted before March 1, 2009, the original rule still applies — exceeding 25% of a section triggers full section replacement to current code standards.
| Roof Permit Date | 25% Rule Impact | What Happens at 25%+ |
|---|---|---|
| Before March 1, 2009 | Full original rule applies | Entire section must be replaced to current FBC standards |
| On or after March 1, 2009 | SB 4-D exemption applies | Only damaged portion must be repaired to current standards |
| Unknown / no permit | Treated as pre-2009 until permit history verified | Full code upgrade may be required pending records review |
What Counts Toward the 25% — and What Doesn't
Florida Department of Business and Professional Regulation issued Declaratory Statement DS 2021-007, which clarified several ambiguities in how the 25% calculation is applied:
- Does count: Any area of roofing material removed and replaced — shingles, tiles, underlayment. Each shingle or tile removed and replaced counts toward the running total for that 12-month period.
- Does not count: Tie-off work — replacing shingles or tiles directly adjacent to a repaired area purely to match aesthetics or weather-seal the perimeter. Cosmetic tie-off that does not involve underlayment removal is excluded from the calculation per DS 2021-007.
- Does not count: Flashing replacement, drip edge repairs, or ridge cap work performed independently without removal of field tiles or shingles below the flashing zone.
This distinction matters practically: a contractor who incorrectly counts tie-off work toward the 25% threshold can inadvertently push a repair into full-replacement territory on the permit application. Experienced permit pullers know this distinction and document accordingly.
How This Plays Out in a Real Scenario
Scenario A — Pre-2009 Roof, Significant Storm Damage
A 2,400 sq ft home in Orlando with a 4-plane hip roof. One plane is approximately 900 sq ft. A hail storm damages 280 sq ft of that plane — about 31% of that section. Because the roof was permitted in 2004, the original 25% rule applies. Even though only 280 sq ft is damaged, the permit requires the entire 900 sq ft plane to be replaced to current code. The homeowner's $4,500 repair becomes a $14,000–$18,000 section replacement.
Scenario B — Post-2009 Roof, Same Damage
Same scenario, but the roof was permitted in 2013. SB 4-D applies. The contractor repairs only the 280 sq ft damaged area. The permit is issued for that scope. No full-section replacement is required.
This is why permit history verification is the first thing Caliber checks on any repair job. We pull permit records through the county building department before issuing a scope of work — so you know your actual exposure before work starts.
Insurance Implications
The 25% rule has a direct impact on insurance claim settlements. When an adjuster's estimate is for "spot repair" on a pre-2009 roof and the scope exceeds 25%, the insurer is required to cover the full code-mandated replacement — not just the spot repair. This is known as a "code upgrade" or "ordinance and law" coverage provision.
Many Florida homeowner policies include Ordinance or Law coverage at 10–25% of dwelling value. If your policy includes this provision and your adjuster's repair estimate would trigger a full-section replacement under the 25% rule, your policy should cover the upgrade to code compliance — not just the damaged portion. Always verify your Ordinance and Law coverage limit before accepting a repair-only settlement on a pre-2009 roof.
How Caliber and Linn Engineering Handle This
Our standard pre-project checklist on any repair job includes:
- Pull original permit from the county building department to establish the March 2009 threshold
- Measure and document the damaged area vs. total section area
- Identify whether work will exceed 25% — and if so, which code upgrades apply
- If the scope is near the threshold, have our engineering partner, Linn Engineering & Design, Inc., review the scope and document the assessment
- Present the full picture — repair-as-scoped vs. code-triggered full section — with costs for both options before work begins
Linn Engineering & Design, Inc. (Orlando's Best 2025 Gold — Building Engineer) is located at 711 Executive Dr, Winter Park, FL 32789. Phone: (407) 775-5194. Website: linnengineering.com.
Caliber Construction Group operates under FL License #CCC1337709. All work is permitted and inspected through the appropriate county building authority — Orange, Seminole, or Osceola — with final permit closeout included in every project scope.
Know Your Exposure Before You Commit
Whether you're filing an insurance claim or planning a repair, understanding the 25% rule for your specific roof is step one. Caliber pulls permit records and gives you a written scope before anything starts — at no cost to you.
Schedule Your Free InspectionSources: Florida Building Code, Existing Building Volume, Section 706.1.1; Florida Senate Bill 4-D (2022 Special Session); Florida DBPR Declaratory Statement DS 2021-007; Orange County FL Building Department permit records system. This article reflects 2026 code interpretation and is for informational purposes. Consult a licensed Florida roofing contractor and building department for project-specific determinations.