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Jacksonville ADU questions, answered
Every guide starts with the short answer, then explains when it changes. Rules carry a date and a named source, because Florida ADU rules differ by city and change often.
Updated October 2026
How much does an ADU cost in Jacksonville?
National 2026 figures, what Jacksonville lots add, and how to compare quotes.
Read the guideAre ADUs allowed in Jacksonville?
The 2022 ordinance: where, how big, how tall, and where it does not apply.
Read the guideDo I have to live on the property to build an ADU in Jacksonville?
The owner rule, homestead, and what it means for investors and families.
Read the guideCan my HOA stop me from building an ADU in Jacksonville?
Why covenants can override city permission, and how to read yours.
Read the guideCan I rent my Jacksonville ADU short term?
State vacation rental law, licensing, and how the owner rule limits it.
Read the guideWhat flood and wind rules apply to an ADU in Jacksonville?
Flood zones, floor elevation, the 50% rule and hurricane design.
Read the guideWant the answer for your parcel?
Share the address and your idea. We find out which government issues the permit, then check zoning, flood zone, covenants and setbacks, and tell you which ADU types are realistic.
Serving Jacksonville, Jacksonville Beach, Orange Park, St. Augustine and Fernandina Beach.