St. Petersburg Setbacks & Height Limits — Residential Zones

Fact-checked against the current St. Petersburg Land Development Regulations on September 20, 2026.

St. Petersburg's residential dimensional standards are in Chapter 16 of the City Code. The rules differ between Neighborhood Traditional (NT), Neighborhood Suburban (NS), mixed-residential, and other districts, and many setbacks change with building height.

Neighborhood Traditional (NT) Height

The current NT standards distinguish the beginning of the roofline from the top of the roof peak:

The previous version said NT building heights “typically do not exceed 24 feet.” That was misleading: 24 ft is the maximum beginning-of-roofline height for the primary building, while the roof peak may reach 36 ft under the current table.

Setbacks in NT districts are also height-sensitive. The required front, side, and rear dimensions can increase as the applicable portion of the building gets taller.

Neighborhood Suburban (NS) Height

The current NS table uses the same general maximum-height framework:

The minimum setbacks vary by NS district and by building height. For example, for an NS-1 primary building with a beginning of roofline at or below 24 ft, the current table lists:

• building front yard: 25 ft or M;
• interior side yard: 7.5 ft or M;
• street side yard: 12 ft or M;
• principal rear yard: 20 ft or M.

Here M refers to the code's method for established/predominant setback conditions where applicable. Taller building portions require larger setbacks.

Accessory Dwelling Units

St. Petersburg's local code expressly allows accessory dwelling units in specified districts and conditions. For example, the current NT-1 text states that accessory dwelling units such as garage apartments are allowed subject to minimum lot size, setbacks, parking, and other applicable requirements.

Florida Statutes §163.31771 does not require St. Petersburg to allow ADUs in every single-family zoning district. The statute says a local government may adopt an ordinance allowing ADUs in single-family residential areas. The earlier page's statement that state law “requires” citywide permission was incorrect.

For local eligibility and dimensional rules, use the St. Petersburg ADU rules page together with the current Chapter 16 text.

Established Neighborhood Pattern Rules

St. Petersburg's code sometimes uses established neighborhood conditions when determining a required setback. That is why values shown as “X ft or M” should not be reduced to one universal setback for every parcel in the district.

Historic, waterfront, flood-related, airport, and other special conditions can add further review.

How to Check a Property

1. Confirm the exact zoning district in the City's zoning map.
2. Open the current Chapter 16 section for that district.
3. Determine the building height by the code's roofline and roof-peak measurements.
4. Use the setback column corresponding to the proposed building height.
5. Check established-neighborhood, accessory-structure, historic, waterfront, and other special rules.
6. Confirm parcel-specific questions with Planning & Development Services.

Official Sources

• St. Petersburg Code — Neighborhood Traditional Single-Family Districts
• St. Petersburg Code — Neighborhood Suburban Single-Family Districts
• Florida Statutes §163.31771
• City of St. Petersburg Planning & Zoning

This guide is informational only. Current Chapter 16 standards and parcel-specific conditions control. Verify current requirements before design, permitting, purchase, or construction decisions.