Can you build an ADU in Jacksonville, FL?

Allowed with site-plan review

The supplied materials strongly suggest ADUs are now allowed in most single-family residential zones under an adopted 2022 ordinance, but investors should verify the current codified standards, exclusions, and owner-occupancy rules before underwriting.

Confidence: medium · Last researched May 2026

Accessory dwelling unit (ADU) rules

A secondary source reports Jacksonville adopted Ordinance 2022-0448-E allowing ADUs in most single-family residential zones, subject to size, location, design-matching, and owner-occupancy rules.

  • Maximum ADU size reported as 25% of the primary residence or 750 square feet, whichever is smaller
  • Owner must live in either the primary residence or the ADU
  • ADU reportedly must be located behind the primary residence and not in the front yard
  • ADU reportedly cannot exceed the height of the primary residence
  • Architectural design, color, roof shape/materials, and exterior finishes reportedly must match the primary residence
  • Secondary source notes beach municipalities and Baldwin are excluded and HOA/deed restrictions may still prohibit ADUs
  • Secondary source says minimum rental period is 7 days; verify in official code before relying on this

Related questions

Are ADUs allowed in Jacksonville, FL?

A secondary source reports Jacksonville adopted Ordinance 2022-0448-E allowing ADUs in most single-family residential zones, subject to size, location, design-matching, and owner-occupancy rules.

Full investor analysis

You've seen the general rule. The full Jacksonville, FL report shows which districts allow ADUs by-right vs. by special permit, the approval path and timeline, and the overlay/flood constraints that quietly kill ADU projects here. First town report is free.

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More about Jacksonville, FL zoning

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This summary is AI-generated from public municipal sources and is not legal, engineering, or land-use advice. Always verify zoning with Jacksonville, FL officials before making decisions.

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