Generator and Standby Power Permits in South Florida – Miami-Dade, Broward and Palm Beach County 2026

Generator permits and standby power system permits are required for permanent generator installations throughout Miami-Dade County, Broward County, and Palm Beach County. In a region where hurricanes regularly cause extended power outages lasting days, weeks, and in some cases months, standby generators have become standard equipment for residential properties and a life-safety necessity for commercial, healthcare, and critical infrastructure facilities. Every permanent generator installation — regardless of size — requires permits before installation begins.

Why Generator Permits Are Required

Permanent standby generators are complex electromechanical systems that present multiple hazards when improperly installed: natural gas or propane fuel line connections create explosion and fire risks, automatic transfer switches create backfeed hazards for utility workers during power outages, generator exhaust contains toxic carbon monoxide gas that can enter buildings if exhaust is not properly discharged, and high-voltage electrical connections present electrocution risks. Generator permits and inspections protect homeowners, neighbors, utility workers, and first responders.

Florida Power and Light (FPL) and other utilities require that all permanent generator installations be performed by licensed contractors with permits, and that transfer switches be properly configured to prevent backfeed onto utility lines. Utility workers have been killed by backfeed from improperly installed generators during storm restoration work.

Generator Permit Types in South Florida

Residential Standby Generator Permit covers the installation of permanent, whole-home standby generators fueled by natural gas or liquid propane (LP). Residential standby generators typically range from 10 kilowatts to 25 kilowatts capacity and include an automatic transfer switch that monitors utility power and starts the generator automatically within seconds of a power outage.

Commercial Standby Generator Permit covers standby generator installations at commercial buildings, retail centers, office buildings, and industrial facilities. Commercial generators range from 25 kilowatts to over 2,000 kilowatts and require engineered electrical and mechanical plans.

Emergency Generator Permit covers generators required by code for certain occupancy types: hospitals, emergency care facilities, nursing homes, assisted living facilities, high-rise buildings, and other occupancies where continuous power is required for life safety. Emergency generators are subject to NFPA 110 standards and require monthly and annual testing and inspection programs.

Portable Generator Permit: Portable generators — plug-in or cord-connected units stored in garages and used during outages — generally do not require permits unless they are connected to the building's electrical system through a manual transfer switch. A manual transfer switch installation does require an electrical permit.

Fuel System Permit covers the installation of natural gas or liquid propane piping serving the generator. Gas piping for generators requires a plumbing/gas permit in addition to the mechanical and electrical permits.

Miami-Dade County Generator Permit Requirements

Miami-Dade Building Department: (786) 315-2000, miamidade.gov/permits. Generator permit applications in Miami-Dade County require: completed permit application forms (mechanical and electrical), generator equipment specifications, automatic transfer switch specifications, fuel system (gas line) routing and sizing information, and installation site plan showing generator location relative to property lines, structures, windows, and doors (for exhaust direction compliance).

Miami-Dade County requires that generators be placed a minimum distance from property lines, openings into buildings (windows, doors, vents), and that exhaust is directed away from buildings. Specific setback requirements must be confirmed with Miami-Dade Building Department.

Required inspections: gas rough (before covering gas line), mechanical/generator installation, electrical rough (transfer switch and wiring), and final inspection (complete installation test).

Broward County Generator Permit Requirements

Broward County Building Division: (954) 765-4400, broward.org/building. Generator permit applications require mechanical, electrical, and gas permit applications. Setback requirements from property lines and building openings must be met and documented in the permit application site plan.

Palm Beach County Generator Permit Requirements

Palm Beach County Building Division: (561) 233-5100, (561) 274-1200. Generator installations must comply with Florida Building Code requirements for generator placement, exhaust routing, and automatic transfer switch installation.

Generator Contractor License Requirements

Permanent generator installations in South Florida must be performed by properly licensed contractors. The generator equipment installation typically requires a licensed Mechanical Contractor or a licensed Electrical Contractor with generator installation experience. Gas line work requires a licensed Plumbing Contractor or licensed Gas Piping Contractor. Electrical transfer switch installation requires a licensed Electrical Contractor. Some generator dealers/installers hold combination licenses covering multiple aspects of the installation.

Verify that any generator installer holds current Florida licenses, current workers' compensation insurance, current general liability insurance, and a valid Local Business Tax Receipt for the applicable county.

Generator Permit Fees in South Florida

Generator permit fees are charged in USD and vary by jurisdiction, generator size (kilowatts), and the number of separate permits required (mechanical, electrical, gas). Total USD permit fees for a residential standby generator installation typically range from a few hundred USD to over one thousand USD depending on the county and municipality.

Reinspection fees are charged in USD when inspections fail due to incorrect fuel line installation, improper exhaust routing, transfer switch wiring deficiencies, or setback violations.

FPL Utility Notification Requirements

In FPL territory (which covers most of Miami-Dade, Broward, and Palm Beach Counties), all permanent generator installations with automatic transfer switches require notification to FPL before installation and activation. FPL must verify that the transfer switch configuration properly isolates the generator from the utility grid to prevent backfeed. FPL provides a generator installation guide and interconnection requirements available at fpl.com. Do not activate a permanently installed generator before notifying FPL and completing the required utility coordination.

Carbon Monoxide Safety

Generator exhaust contains high concentrations of carbon monoxide (CO), an odorless and colorless toxic gas. Carbon monoxide from improperly placed generators has killed entire families in South Florida during hurricane events. Generators must be placed outdoors with exhaust directed away from all building openings. Carbon monoxide detectors must be installed in residential buildings where generators are used, per Florida law. Never operate a generator inside a garage, even with the door open.