Miami-Dade County • Permissiveness Score: 86/100
Miami, FL ADU Zoning Rules & Regulations
Miami and Miami-Dade County permit ADUs in single-family residential districts to address affordable housing needs, with specific hurricane wind and flood zone elevation standards.
Homeowner Action
Ready to verify your parcel setbacks?
Connects with up to 2 local licensed builders
Key Zoning Parameters for Miami
Verified 2026 Max Detached Size 800 sq ft
Max Attached Size 600
Rear & Side Setbacks 5 ft rear / 5 ft side
Front Setback 20 feet
Max Height Limit 18 feet (1.5 stories)
Owner Occupancy Required Owner must occupy either the primary residence or the ADU as a homestead.
Parking Requirements Required (1 space) 1 off-street space required, exempt within 0.25 mi of Metrorail or Metromover.
Junior ADU (JADU) Not recognized
Short Term Rentals (Airbnb) Prohibited Must be leased for 6+ months.
Estimated Permit Fees $3,000 - $7,500
Avg Review Timeline 8 - 14 weeks
Fire Sprinklers Florida Building Code compliant.
Governing Ordinances & State Laws
- ✓ Miami 21 Zoning Code
- ✓ Miami-Dade County Ordinance No. 20-41
- ✓ Florida Live Local Act
Miami ADU Frequently Asked Questions
Do Miami ADUs need hurricane impact windows?
Yes, all ADUs built in Miami-Dade County must comply with the High Velocity Hurricane Zone (HVHZ) building codes, including impact glass or approved shutters.
Free Service
Check Your Specific Miami Lot
Enter your address to calculate your maximum building envelope and connect with top licensed ADU builders in Miami.
Top Builders in Miami
Verified South Florida Casitas & ADUs ★ 4.7
Design-Build Contractor • 21 local projects