What Home Improvements Require a Permit in Florida?

In Florida, you need a building permit for almost any home improvement that goes beyond cosmetic work. The Florida Building Code requires a permit before you build, enlarge, alter, repair, move, or demolish any structure, and the same applies to electrical, plumbing, gas, mechanical, and HVAC systems.¹ Painting, flooring, cabinets, and similar surface work are generally exempt. Everything in between depends on the specifics, and your local building department has the final say.

Home Improvements That Require a Permit

The code’s language is deliberately broad: any owner who intends to construct, enlarge, alter, repair, move, or demolish a building, or install, replace, or modify electrical, gas, mechanical, or plumbing systems, needs a permit.¹ For a homeowner, that typically covers:

Structural work: adding or removing walls, room additions, enclosing a patio or porch, and building a garage or carport.
Roofing: full replacements and major repairs. Florida enforces roofing permits strictly because of hurricane wind-resistance requirements.
Electrical work: new wiring, panel upgrades, additional circuits, and new outlet installations.
Plumbing: relocating fixtures, rerouting pipes, and most water heater installations.
HVAC: installing a new air conditioning unit, swapping in equipment with a different capacity or type, and modifying ductwork.
Outdoor structures: swimming pools, decks above a certain height, large sheds, screen enclosures, and fences taller than six feet in many jurisdictions.
Hurricane protection: impact-resistant coverings such as shutters and impact-rated windows are explicitly listed in the code.
Change of use: converting a garage into a bedroom or a shed into a home office changes the occupancy classification and triggers a permit.

A useful rule of thumb: if the project touches the structure, involves any trade work, or changes how a space is used, assume you need a permit until your local building department confirms otherwise.

Home Improvements That Do Not Require a Permit

The Florida Building Code exempts a range of minor and cosmetic projects. Exact lists vary by jurisdiction, but the following are commonly exempt across most Florida counties:²

Interior cosmetic work: painting, wallpapering, tiling, carpeting, and installing cabinets or interior trim.
Window and door replacements where the rough opening stays the same size.
Installing or replacing gutters and downspouts.
Low-voltage systems under 98 volts, including doorbells, thermostats, data cabling, and security cameras.
Replacing an existing window AC unit.
Replacing standard wall switches and outlets rated at 20 amps and 120 volts or less.
Low wood decks, typically those 18 inches or less above grade.
Concrete flatwork such as walkways, driveways, and open patios that are not structurally attached to the home.
Screening an already-covered patio or porch.

One point that catches homeowners off guard: exempt work still has to comply with the Florida Building Code. The exemption removes the paperwork, not the construction standards. A ceiling fan wired incorrectly is still a code violation, even though hanging the fan itself didn’t need a permit.

Local Rules and Optional Exemptions

Florida’s building permit system is administered locally. The Florida Building Code sets the statewide minimum, and each county and municipality enforces it and may add local amendments on top.³ That means two neighboring cities can treat the same project differently, and the final word on whether your specific job needs a permit belongs to the building department for the jurisdiction where your property sits.

State law also allows local governments to grant extra exemptions for single-family homeowners. A local department may exempt owner-performed additions or alterations up to 1,000 square feet, or the size of the existing home, whichever is less. It may also exempt non-owner work costing $5,000 or less within a 12-month period.⁴ These exemptions are optional, so not every jurisdiction offers them. Confirm before you count on one.

Florida also lets you act as your own general contractor on a one-family or two-family home you own and occupy, under the owner-builder exemption, as long as you supervise the work directly and are not building to sell or lease. If you sell within one year of completing the work, the law presumes the project was undertaken for sale.⁵ This exemption is about who can perform the work, not whether a permit is needed. You still have to pull the permit, follow the code, and pass inspections.

What Happens If You Skip the Permit

Doing permit-required work without a permit carries consequences that go well past a fine.

Stop-Work Orders and Daily Penalties

A building official or code enforcement officer who discovers unpermitted construction can shut the project down on the spot. Civil penalties for continuing to violate the code can reach $2,500 per day, per violation, with each day counting as a separate offense. Those penalties accrue until you come into compliance, and a certified copy of the penalty order can be recorded as a lien against the property.⁶

Criminal Charges

It is a criminal offense for an unlicensed person to start or perform work that requires a building permit without one. A first offense is a first-degree misdemeanor, punishable by up to one year in jail. A repeat violation becomes a third-degree felony carrying up to five years in prison.⁷ The same third-degree felony charge applies to anyone performing unpermitted work during a declared state of emergency, a provision Florida enforces aggressively after hurricanes.⁶

Insurance, Resale, and Financing Problems

Homeowners insurance policies commonly exclude coverage for damage caused by or related to unpermitted construction. If an unpermitted electrical installation causes a fire, your insurer may deny the claim.

At sale, Florida sellers must disclose unpermitted improvements to prospective buyers, and failing to disclose creates liability well after closing. Appraisers may not count unpermitted square footage toward the home’s value, which can push the appraisal below the sale price and derail the buyer’s financing. Some mortgage lenders will not finance homes with known unpermitted work, which narrows your buyer pool to cash purchasers.

Retroactive Permits

If unpermitted work surfaces later, you can usually apply for a retroactive, or “after-the-fact,” permit. The building department will require the same plans and inspections as a standard permit, and inspectors may need you to open up finished walls or ceilings to verify hidden work. Many jurisdictions charge penalty fees above the normal cost. If the work does not meet current code, you have to bring it into compliance before the permit can issue, which can mean tearing out and redoing portions of the job.

Confirming What Your Project Needs

Before buying materials or signing a contractor’s agreement, call the building department for your county (if your property is in an unincorporated area) or your city or town (if you are inside municipal limits). Florida law requires every local building department to post permit applications on its website and accept electronic submissions,⁸ and most publish their fee schedules, required documents, and local exemption lists alongside. Many offer pre-application consultations where you describe the project and get a direct answer about what you need. A short call up front is cheaper than a stop-work order, a denied insurance claim, or a stalled sale later.

1
MyFloridaLicense.com. Building Codes and Standards FAQs
2
Miami-Dade County. Permit Exemptions
3
Florida Senate. Florida Statutes 553.73 – Florida Building Code
4
Florida Senate. Florida Statutes 553.80 – Enforcement
5
The Florida Legislature. Florida Statutes 489.103 – Exemptions
6
Justia Law. Florida Statutes 489.127 – Prohibitions; Penalties
7
The Florida Legislature. Florida Statutes 775.082 – Penalties; Applicability of Sentencing Structures; Notification to Victims
8
Florida Senate. Florida Statutes 553.79 – Permits; Applications; Issuance; Inspections