ADU Design in Bal Harbour, FL

ADU Design in Florida: what governs your project

Florida has no broad statewide ADU mandate; ADU rules are set city by city and county by county through local zoning codes. Some cities have moved to encourage ADUs while others maintain significant restrictions.

Energy code

Local permitting covers zoning compliance, Florida Building Code structural and wind-load requirements, and flood-zone elevation rules in coastal areas. Impact fees, utility connections, and size limits vary widely by jurisdiction.

Permitting & plan check

Florida uses a single statewide Florida Building Code, but permits and plan review are handled locally by city and county building departments. High-Velocity Hurricane Zone jurisdictions run the most rigorous review in the state, and coastal cities add floodplain and coastal construction requirements on top of the base code.

Good to know

• Miami-Dade and Broward counties form the High-Velocity Hurricane Zone, the strictest wind-borne debris region in the United States.
• Florida's building code is updated on a regular cycle and is widely regarded as one of the toughest hurricane codes in the country.
• Much of Florida's water table sits just a few feet below grade, which shapes everything from foundation design to stormwater management statewide.

Every discipline, one team