Pinellas County Zoning
ADU Rules for
St. Petersburg, Florida
St. Pete is one of the most ADU-friendly cities in FL. You can build garage apartments in almost any neighborhood zoned NT.
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Updated for 2026
Zoning Code
NT-1, NT-2
Local ordinance code.
Max Unit Size
750 sq ft
Living area allowed.
Setbacks
5ft Rear / 5ft Side
Req. distance from lines.
Important Local Restriction
Alley access is required for parking in many zones. Check if your lot has a paved alley.
Common Questions in St. Petersburg
Answers based on the NT-1, NT-2 zoning text and local building department data.
How much does it cost to build an ADU in St. Petersburg?
While costs vary by finish level, the average permitted value for accessory structures in St. Petersburg is currently around $1,300. Prefab modular units may be cheaper, while custom concrete block construction will be higher.
What is the maximum size for a guest house in St. Petersburg?
Under the NT-1, NT-2 zoning ordinance, detached units are typically limited to 750 sq ft. However, state law SB-48 may allow for larger units if they meet specific setback requirements.
What are the setback rules for St. Petersburg?
You generally need to maintain a distance of 5ft Rear / 5ft Side from your property lines. Corner lots and historic districts may have stricter overlays.
Can I rent out my ADU in St. Petersburg?
Yes. Rental demand in St. Petersburg is rated as 'Very High'. 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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