St. Pete ADU Zoning Map Explained: Can You Build?
The number one question we get isn't "how much?"—it's "am I allowed?" St. Petersburg has some of the most progressive ADU laws in Florida, but the zoning map (NTM-1 vs NTM-2) can be a headache to navigate. Here is the plain-English translation of the city code.
1. The "5-Foot Setback" Rule
This is the dealbreaker. For most detached ADUs, you must be at least 5 feet away from your rear and side property lines.
- Detached Structure: 5 ft from sides/rear.
- Garage Conversion: If your garage is already closer than 5ft (common in Historic Kenwood), you are usually "Grandfathered in" as long as you don't expand the footprint.
- Second Story: If building ON TOP of a garage, setbacks often increase.
2. Impervious Surface Ratio (ISR)
St. Pete cares about drainage. Your "Impervious Surface" (House + Pool + Driveway + ADU) generally cannot cover more than 60-65% of your total lot size.
Pro Tip: If you are maxed out, we can sometimes remove a concrete driveway and replace it with shell or pavers to "buy back" enough percentage to build your cottage.
3. Size Limits
Generally, your ADU cannot be larger than 800 sq ft OR 67% of the main house (whichever is smaller).
Don't Guess. Check Your Lot.
The city map is confusing. We have a direct line to the zoning office. Send us your address, and our team will perform a free "Feasibility Study" to tell you exactly what you can build.
Once you confirm your property is in a valid zone (NTM-1 or NS-1), the next step is hiring a licensed ADU construction team to handle the permitting and build.
Free Quote • 5-Star Rated • Licensed & Insured
We’ll reach out within 24 hours. No pressure no spam.
Proud members and featured across reputable local organizations.
bbb
Nahb
TBBA
CraftLine Remodeling Google Guaranteed
HomeAdvisor
Yelp
