5 county-level rules, plus city-specific rules for 8 cities in Miami-Dade County, Florida.
Verified from official government sources
Miami-Dade County allows ADUs in AU, EU, and RU districts within the Urban Development Boundary. RU-1 requires minimum 7,500 sq ft lot with 400-800 sq ft ADUs. Garage conversions permitted on 5,000 sq ft lots with 220 sq ft minimum habitable area.
Miami-Dade County Code § 33-22
Miami-Dade County has approved an ordinance, allowing an accessory dwelling unit (ADU) or guesthouse in a single-family zoned district either as a newly detached or attached dwelling unit, including the conversion of a portion of an existing single-family dwelling... An ADU is an attached or detached accessory building, or portion thereof, that is used as an ancillary residential unit and is lo...
Miami-Dade County Code Section 33-20(k) permits one utility shed up to 400 sq ft per residential lot. Sheds under 100 sq ft in RU-1 districts have setbacks of 55 ft front, 5 ft rear and side. Setbacks may be reduced to 2 ft with neighbor consent.
Miami-Dade County allows garage conversions to ADUs on lots as small as 5,000 sq ft with minimum 220 sq ft habitable area. Building permits required. All conversions must meet HVHZ hurricane building code including impact-resistant openings.
Carports in unincorporated Miami-Dade County require building permits and must meet Florida Building Code wind load requirements for the High-Velocity Hurricane Zone (HVHZ). Miami-Dade County has the strictest wind load standards in the state due to hurricane exposure.
Tiny homes on permanent foundations in unincorporated Miami-Dade County must meet the Florida Building Code minimum standards and zoning requirements. Tiny homes on wheels are classified as recreational vehicles and cannot be used as permanent dwellings. The county's minimum dwelling size and HVHZ wind requirements create additional barriers.
8 cities in Miami-Dade County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
9 verified rules • ADU Impact Fees, ADU Owner Occupancy
9 verified rules • ADU Impact Fees, ADU Owner Occupancy
5 verified rules • ADU Rules, Carport Rules
5 verified rules • ADU Rules, Carport Rules
5 verified rules • ADU Rules, Carport Rules
5 verified rules • ADU Rules, Carport Rules
5 verified rules • ADU Rules, Carport Rules
5 verified rules • ADU Rules, Carport Rules
See every category we cover for Miami-Dade County — parking, noise, fences, fires, animals, pools, and more.
Miami-Dade County Ordinance Hub →