Updated with 2026 Florida SB-48 Codes

What ADU can you build in your Duval County backyard?

Instant zoning report — see exactly what your zoning allows: permitted ADU types, size limits, setbacks, and lot requirements for your specific property.

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Unincorporated Duval County Rules

Max Size850 sq ft
Setbacks5ft Side / 10ft Rear
Rental Rules
Varies by district

*These rules apply if your address is NOT inside a specific city limit.

Find out what ADU you can build in your backyard

— and get a free Duval County ADU guide for your area.

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Cities in Duval County

Jacksonville

Max Size:1000 sq ft
Setbacks:5 ft rear, 5 ft side
View City Rules

Florida ADU Laws 2026 — What SB-48 Actually Changed

Statewide rules on size limits, owner-occupancy, HOA overrides, and what local municipalities can still control.

Read Florida ADU Laws →

Find out what ADU you can build in your backyard

— and get a free Duval County ADU guide for your area.

Free report · No commitment · 60 seconds