Florida Permit Desk

Do You Need a Permit for a Whole-House Generator in Florida? (County Table)

Last verified against official sources: · Guide

Independent guide, not a government site. Confirm every requirement with the building office for your address before starting work. Items marked Unverified could not be confirmed on an official page.

Short answer: Yes. In Florida you need a permit for a permanent (whole-house or standby) generator. It's electrical work, and the state's under-$7,500 permit exemption does not cover electrical, plumbing, structural, mechanical or gas work.[1] Every building department in our table requires a permit, usually an electrical permit plus a gas, LP tank or pad permit as needed. Running a portable generator with extension cords usually needs no permit. Connecting one to your house wiring does.[3][12]

Permits come from the city or county building department where the property is. Check who issues permits for your address first. A city may have rules that differ from its county's.

County and city table

Jurisdiction What permit Key requirements from the official checklist
Miami-Dade County (unincorporated) Building permit (Category 38 standalone), reviewed by several agencies[3] Plans by a design professional. Site plan with generator, fuel tank, panel and transfer switch. Exhaust 10 ft from openings. Pad and anchoring details. Equipment above Base Flood Elevation. Setbacks for gas/propane units up to 5 ft tall: rear 5 ft, interior side 3 ft (RU districts).[3]
Palm Beach County (unincorporated) Generator permit with any mechanical sub-permits submitted together[4] Survey with flood zone. Slab and anchoring drawing. Riser drawing and load calculation. Generator specs (kW, amps, breaker, fuel, sound rating). Transfer switch required. Exhaust 10 ft from openings, including a neighbor's. Opaque screen from street and neighbors (a shadowbox fence doesn't count). Sign at the service entrance.[4]
Hillsborough County (unincorporated) Residential electrical trade permit on HillsGovHub[5] Applied for by a Florida EC or ER licensed contractor. Signed and sealed site plan showing setbacks, easements, wetlands and flood elevation. Load calculation for units rated below the main service. Gas permit or "gas by others." Two inspections: rough-in and final. Recorded Notice of Commencement before the first inspection.[5]
Orange County (unincorporated) Electrical permit on Fast Track; a separate Gas permit for gas piping[6][7][8] Orange County lists generator installation among electrical work that needs a permit.[6] Owner-builders file an Owner Builder Disclosure Statement.[7] We did not find a generator-specific checklist. Unverified (Orange County publishes no generator submittal list that we could find; ask the County what drawings it needs.)
Collier County (unincorporated) Electrical (PREL) permit[9] Riser diagram, transfer switch amperage, generator size and load calculations. Site plan with generator and concrete pad size, location and setbacks. Drawings must be sealed by an engineer over 600 amps. Swapping an above-ground LP tank of 100 lb or less is exempt.[9][10]
City of Cape Coral "Electrical - Residential" application, Generator type[11] Site plan, electrical plans, Burrowing Owl Gopher Tortoise Affidavit. A separate LP tank permit must be issued or closed first (not needed for diesel). A separate concrete permit if the pad needs a footer over 4 inches thick. Electrical, zoning and other reviews; hook-up, final and drainage survey inspections.[11]

Requirements in cities inside these counties can differ. In Miami-Dade, the County's guidelines apply only to unincorporated areas; if you're in a city, contact the city's building department.[3] We could not find an official generator-specific page for Broward County or the City of Jacksonville, so they aren't in the table.

Portable generators and transfer switches

  • No permit just to run it. In Miami-Dade, a building permit is not required for a portable generator that powers a few appliances and a string of lights plugged directly into it.[3]
  • Permit to connect it to the house. To feed household circuits from a portable generator, Miami-Dade requires an electrical permit for the device that lets you do it safely.[3] Cape Coral uses a "Transfer Switch Only" guideline for a transfer switch for a future or portable generator, applied for by an electrical contractor or owner-builder.[12]
  • Where to run it. Miami-Dade says portable generators must be used outdoors, 10 feet from windows, doors and other openings, and stored indoors without fuel.[3]

Fuel: propane, natural gas and diesel

The fuel line or tank often needs its own permit:

  • Orange County: a Gas permit is applied for separately on Fast Track.[8]
  • Hillsborough County: show evidence of a fuel gas permit or note "gas by others."[5]
  • Cape Coral: the LP tank permit must be issued or closed before the generator permit can be issued. Diesel generators don't need one.[11]
  • Miami-Dade County: fuel tanks are reviewed too. Generators and fuel supply other than gas systems must be at least 100 feet from potable water supply wells.[3]

Flood zones

Several counties require the generator to sit above flood level:

  • Miami-Dade: all electrical and mechanical equipment must be above the Base Flood Elevation and/or required lowest floor elevation. For existing homes, it may match the existing lowest finished floor.[3]
  • Palm Beach: in flood zones other than B or C, the unit must be at or above the finished floor elevation.[4]
  • Hillsborough: in a Special Flood Hazard Area, the site plan must show the required design flood elevation.[5]

Who can pull the permit

  • Licensed electrical contractor: always allowed.
  • Owner-builder: Florida's electrical owner exemption covers an owner doing the work on his or her own single-family or duplex residence, not for sale or lease.[14] Cape Coral explicitly accepts owner-builder applications for generators.[11] Hillsborough's checklist names a Florida EC or ER licensed contractor as the applicant and doesn't mention owner-builders.[5] See our owner-builder guide.
Notice of Commencement. State law requires a copy of the Notice of Commencement before the first inspection when the direct contract is more than $5,000.[13] Hillsborough County's generator checklist says a recorded Notice of Commencement is required before the first inspection without stating that threshold.[5] Ask the County if your job is $5,000 or less.

HOAs and generators

Florida's HOA law treats exterior fixed generators and fuel storage tanks as hurricane protection. Every HOA must adopt hurricane protection specifications and may not deny an application that conforms to them. It may still require you to match an existing unified building scheme for appearance.[2] An HOA also may not require a building permit as a prerequisite for its own review.[2]

Before you buy

  1. Find out who issues permits for your address (guide).
  2. Read that department's generator or electrical checklist; the requirements above differ by county.
  3. Check setbacks and screening early. Miami-Dade and Palm Beach both have rules that affect where the unit can go.[3][4]
  4. If you hire someone, check the contractor's license on DBPR.

Common questions

Do I need a permit for a whole-house generator in Florida?

Yes. A permanently installed standby generator is wired into your home's electrical system, and Florida's under-$7,500 permit exemption does not cover electrical, plumbing, structural, mechanical or gas work.[1] Every local building department we checked requires a permit for a permanent generator.[3][4][5][6][9][11]

Do I need a permit for a portable generator?

Not just to run it. Miami-Dade County says no building permit is needed when a portable generator powers a few appliances plugged directly into it. If you connect it to your home's wiring, you need an electrical permit for the transfer device.[3] Cape Coral has a separate transfer-switch-only guideline for portable or future generators.[12]

Can my HOA stop me from installing a generator?

Florida law lists exterior fixed generators and fuel storage tanks as hurricane protection. An HOA must adopt specifications for hurricane protection and may not deny an application that meets them, though it can require you to follow an existing unified building scheme for appearance.[2]

How far does the generator exhaust have to be from windows?

Miami-Dade County and Palm Beach County both require the exhaust to be 10 feet from windows, doors and other openings, citing the Florida Building Code. Palm Beach County says this includes openings in a neighbor's house.[3][4]

Sources

Every fact on this page comes from the official sources below, checked on 22 October 2026.

  1. Florida Statutes § 553.79 (2026), Permits; applications; issuance; inspections (under-$7,500 exemption)
  2. Florida Statutes § 720.3035 (2026), Architectural control covenants (HOA hurricane protection)
  3. Miami-Dade County: Generators (Building & Permits)
  4. Palm Beach County Building Division: Residential and Commercial Generator Permitting Checklist (PDF, revised 12/31/24)
  5. Hillsborough County: Residential Backup Generators Requirements
  6. Orange County: Post-Storm Permitting Guide
  7. Orange County: Electrical Permit
  8. Orange County: Gas Permit
  9. Collier County: Electrical (PREL) application requirements, incl. generators
  10. Collier County: Certain Qualifying Work Under $7500.00 Exempt from Building Permits, with Sec. 22-26 exemptions (PDF, 2026)
  11. City of Cape Coral: Electrical (Generator) residential guideline (PDF, revised January 2026)
  12. City of Cape Coral: Electrical (Transfer Switch Only) residential guideline (PDF, revised January 2026)
  13. Florida Statutes § 713.135 (2026), Notice of commencement and applicability of lien
  14. Florida Statutes § 489.503 (2026), Exemptions (electrical owner exemption in subsection 6)