Accessory Structures in Pinellas County, FL (2026)

4 county-level rules, plus city-specific rules for 7 cities in Pinellas County, Florida.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Pinellas County. If you live within an incorporated city, that city's own rules apply: see the city list below.

ADU Rules

Unincorporated Pinellas County caps accessory dwelling units at 1,000 square feet (750 in coastal storm or flood hazard areas), allows only one per lot, and generally requires the primary or accessory unit to be owner-occupied.

Pinellas County ADU Size And Occupancy Rules

Some Restrictions

Pinellas County Land Development Code § 138-3210(c)(1)

The accessory dwelling unit shall not exceed 1,000 square feet, or 750 square feet if the property is within the Coastal Storm Area or flood hazard areas established in Land Development Code Section 158-23... There shall be only one accessory dwelling unit per lot or parcel of ownership. Either the primary dwelling unit or the accessory dwelling unit shall be owner-occupied.

Full ordinance details →Official source ↗

ADU Owner Occupancy

Pinellas County requires that either the primary house or the accessory dwelling unit on a single-family lot be owner-occupied before an ADU can operate, per Code § 138-3210(c)(1)c. The county waives that rule only if both units are deed-restricted as affordable housing at or below 80 percent of area median income for at least 20 years.

Pinellas ADU Owner-Occupancy Requirement

Some Restrictions

Pinellas County Code § 138-3210(c)(1)c, (d)

c.Either the primary dwelling unit or the accessory dwelling unit shall be owner-occupied. This requirement may be waived if both the primary dwelling unit and the accessory dwelling unit qualify as affordable to households at 80 percent or below of the median family income as defined consistent with the provisions of Chapter 420 Florida Statutes, and are under a Land Use Restrictive Agreement ...

Full ordinance details →Official source ↗

Shed & Carport Rules

Unincorporated Pinellas County treats a storage shed as a stand-alone, non-inhabitable structure up to 200 square feet. Sheds 12 feet tall or less can sit as close as 3 feet from the side or rear line, or right on the line with a 6-foot opaque fence, and up to two are allowed per home outside a few rural zones.

Pinellas County Storage Shed Setback Rules

Some Restrictions

Pinellas County Code § 138-3505(c)

(c)Setbacks standards for storage sheds apply as follows in residential districts:(1)For the purposes of this subsection and standards therein, storage sheds are described as stand-alone, non-inhabitable structures that are up to 200 square feet in size.(2)Two storage sheds may be permitted as accessory to a residence. This shall not apply to properties in the R-A, R-E and R-R districts or as p...

Full ordinance details →Official source ↗

Tiny Homes

Unincorporated Pinellas has no general tiny-home ordinance. Tiny homes are permitted only inside a special-exception redevelopment of a legally nonconforming mobile home park in a community redevelopment area predating January 30, 1990, subject to Florida Building Code standards.

Pinellas County Tiny Homes Limited To Redevelopment

Significant Restrictions

Pinellas County Code § 38-100(a), (d)(3)

(a)...legally established nonconforming mobile home parks (in any zoning district) located within a community redevelopment area and in existence prior to January 30, 1990, may be redeveloped as a special exception use...(d)The following housing construction types shall be allowable in order to provide for more affordable housing choices:...(3)Tiny homes, subject the standards of the Florida Bu...

Full ordinance details →Official source ↗