Direct Answer
If you repair more than 25% of a roof or roof section without obtaining the required permit and complying with the applicable Florida Building Code requirements, the work can be treated as unpermitted and noncompliant construction. The local building department may require the work to be inspected, corrected, permitted after the fact where allowed, or modified to comply with the applicable code. Florida law generally requires a permit before constructing, altering, modifying, repairing, or demolishing a building when a permit is required.
The important point is that the 25% rule does not mean that every project exceeding 25% automatically requires an entirely new roof in every circumstance. Florida’s current statutory exception and the applicable Florida Building Code provisions can allow the repaired, replaced, or recovered portion to comply with the current code when the existing roofing system meets specified requirements.
Who This Applies To
This guidance is primarily for Florida homeowners, property owners, property managers, contractors, roofing companies, inspectors, and anyone planning significant roof repairs or replacement.
Not for: Starting a large roof repair based solely on a percentage calculation without confirming the applicable permit requirements, roof section, existing roof compliance, and current local building-department requirements.
1. The 25% Threshold Is Important
Florida Building Code Existing Building Section 706.1.1 provides that generally no more than 25% of the total roof area or roof section may be repaired, replaced, or recovered within a 12-month period unless the applicable requirements for the existing roofing system or roof section are satisfied.
For example, if a roof section is 2,000 square feet, 25% represents 500 square feet. A proposed project involving substantially more than that amount should not simply be treated as an ordinary small repair without reviewing the applicable code and permit requirements.
2. What Happens If You Do the Work Without the Required Permit?
Potential consequences can include:
- Building-code enforcement: The local enforcing agency can require the work to comply with the Florida Building Code.
- Inspections: The building department may require inspection of completed or partially completed work.
- Corrective work: Defective or noncompliant work may have to be removed or corrected.
- Additional permitting: Depending on local procedures and the circumstances, you may need to apply for an after-the-fact or corrective permit.
- Project delays: Roofing work may have to stop while the permitting and compliance issue is resolved.
- Additional costs: Opening completed work for inspection or bringing it into compliance can cost considerably more than obtaining the correct permit initially.
- Documentation problems: Future buyers, insurers, inspectors, or lenders may ask how the roof work was performed and whether it was properly permitted.
Florida Statutes §553.79 states that, unless otherwise provided by law, it is unlawful to construct, alter, modify, repair, or demolish a building without first obtaining the required permit from the appropriate enforcing agency. The enforcing agency can also revoke a permit when the work is not in conformity with the Florida Building Code.
3. You Should Not Assume “Repair” Avoids the 25% Rule
The 25% provision expressly addresses repair, replacement, and recovery of an existing roof or roof section. Calling a project a “repair” does not by itself eliminate the need to evaluate the percentage of roof area involved.
This is particularly important when multiple repair areas are being addressed during the same 12-month period.
4. There Is an Important Existing-Roof Exception
Florida law contains an important exception. If an existing roofing system or roof section was built, repaired, or replaced in compliance with the 2007 Florida Building Code or a subsequent edition, and 25% or more of that system or section is being repaired, replaced, or recovered, Florida Statutes §553.844(5) provides that only the repaired, replaced, or recovered portion is required to be constructed in accordance with the Florida Building Code in effect, as applicable.
The Florida Building Commission’s code materials similarly identify an exception when the existing roof covering was permitted and installed in compliance with the applicable code or the two previous versions of the Florida Building Code.
That means the correct answer cannot be determined from the 25% number alone. The property’s roof history, permits, applicable code edition, roof section, and scope of work should be reviewed.
5. What If the Roof Work Is Already Finished?
If you have already completed more than 25% of a roof repair without the required permit, do not assume that the situation is automatically unfixable. Contact the appropriate local building department and a qualified roofing professional to determine the proper corrective process.
Do not cover up potentially important construction details simply to avoid inspection. The building department may need access to concealed components to determine whether the work complies with the applicable code.
6. Keep Documentation
If a roof project is already underway or has been completed, collect:
- Roofing contracts
- Invoices
- Photographs before and during the work
- Roof measurements and calculations
- Permit applications and permits
- Inspection records
- Product information
- Manufacturer installation instructions
- Previous roof permits
- Evidence of the existing roof’s installation or replacement date
This documentation can help establish what work was performed, when it occurred, and whether the existing roof qualifies for an applicable exception.
7. Why Unpermitted Roof Work Can Become a Problem When Selling
Unpermitted work can create additional questions during a future sale because buyers may want documentation showing that significant roof work was properly authorized and inspected.
The issue can also become relevant to insurance and property records. A properly documented roof replacement or repair provides substantially clearer evidence of the roof’s history than an undocumented project.
8. What You Should Do Before Starting More Than 25% Roof Work
- Measure the roof section: Establish the total applicable roof area.
- Review the last 12 months: Identify previous repairs, replacement, and recovery work.
- Check existing permits: Determine when the current roof was permitted and installed.
- Determine whether an exception applies: Review the existing-roof compliance provisions.
- Confirm the applicable code: Use the current requirements adopted by the appropriate jurisdiction.
- Apply for the correct permit: Do this before beginning work when a permit is required.
- Document inspections: Keep permit and inspection records after completion.
Example
Imagine a Florida home has a 2,400-square-foot roof section and a contractor proposes repairing 800 square feet. Twenty-five percent of the roof section is 600 square feet, so the proposed work exceeds the basic 25% threshold.
That does not by itself establish that the entire roof must be replaced. The contractor and building official would need to evaluate the existing roof’s permitting and compliance history and determine which current code provisions and exceptions apply.
Bottom Line
Do not proceed with more than 25% of a Florida roof repair under the assumption that you can avoid a reroof permit by calling the project a “repair.” The 25% rule specifically addresses repair, replacement, and recovery, and Florida law generally requires required permits to be obtained before covered repair work begins.
At the same time, exceeding 25% does not automatically mean that the entire roof must be replaced in every case. Existing-roof compliance exceptions can change the required scope. Before starting the work, have the roof area, previous work, permits, existing roof compliance, and proposed scope reviewed by the appropriate building department and qualified roofing professional.
Related Questions
- Does the 25% rule apply if the damage is from a hurricane?
- Should I repair or replace my commercial roof?
- When is it better to replace a commercial roof rather than repair it?
- How do I prove the age of my commercial roof for a claim?
Sources
- Florida Statutes §553.844 – Windstorm Loss Mitigation; Requirements for Roofs and Opening Protection
- Florida Statutes §553.79 – Permits; Applications; Issuance; Inspections
- Florida Building Commission – 2023 Roofing Code Analysis, Section 706.1.1
- City of Jacksonville Beach – Roof E-Permit Application and 25% Rule Documentation
Last reviewed: October 2026
Related Resources
Before beginning a significant Florida roof repair, verify the applicable roof-area calculation, existing roof compliance, permit requirements, and documentation with the local building department.
Need Commercial Roofing Help?
ShieldLine Roofing can help evaluate the existing roof, document repair areas, and develop a repair or replacement scope that can be reviewed against applicable project requirements.
Disclaimer: This information is for general educational purposes and does not constitute legal, permitting, engineering, insurance, or building-code advice. Requirements can vary by property, jurisdiction, code edition, roof system, and project scope.
Commercial Roof Repair in Florida
