Alachua County Zoning
ADU Rules for
Gainesville, Florida
Gainesville actually eliminated "Single Family Zoning" in 2022/23 to allow denser housing. Very ADU friendly.
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Updated for 2026
Zoning Code
Single-Family
Local ordinance code.
Max Unit Size
850 sq ft
Living area allowed.
Setbacks
7.5ft Rear / 7.5ft Side
Req. distance from lines.
Important Local Restriction
Parking is the main bottleneck. You must provide 1 off-street spot for the ADU.
Common Questions in Gainesville
Answers based on the Single-Family zoning text and local building department data.
How much does it cost to build an ADU in Gainesville?
While costs vary by finish level, the average permitted value for accessory structures in Gainesville is currently around $1,200. Prefab modular units may be cheaper, while custom concrete block construction will be higher.
What is the maximum size for a guest house in Gainesville?
Under the Single-Family zoning ordinance, detached units are typically limited to 850 sq ft. However, state law SB-48 may allow for larger units if they meet specific setback requirements.
What are the setback rules for Gainesville?
You generally need to maintain a distance of 7.5ft Rear / 7.5ft Side from your property lines. Corner lots and historic districts may have stricter overlays.
Can I rent out my ADU in Gainesville?
Yes. Rental demand in Gainesville is rated as 'Extreme (Student)'. While long-term rentals are allowed by right, short-term rentals (Airbnb) may require a separate license depending on your specific neighborhood zoning.
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We calculate the exact construction cost vs. rental income for your specific address in Gainesville.
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