ADUs are allowed in St PetersburgTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for St Petersburg, FL
Is your property eligible for an ADU?
# of Properties
94,935
Owner-occupied
68%
Zoning districts
38
Avg Home Value
$512,930
Median Lot Size
0.19 acres
Avg Income
$88,653
Residential Types:
94,935 housing units
Single Family
97%
Other
3%
Zoning Districts:
108,848 parcels · 38 districts
NS-1
28%(29,949)
NT-1
18%(19,397)
NSM-1
16%(16,970)
NT-2
11%(12,361)
Other
28%(30,171)
ADU Rules
What can you build in St Petersburg, FL?
St Petersburg, FL follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum size of 800 sq ft
- –Maximum size of 67% of the principal dwelling’s floor area
Detached ADU Size Limits
- –Maximum detached ADU size of 800 sq ft.
- –Maximum detached ADU size limited to 67% of the principal dwelling’s floor area.
Max Units
- –1 ADU per single-family lot; duplex and multifamily: none specified
Parking
- –No ADU parking required if ≤600 sq ft, within 1/8 mile of a high-frequency transit route, alley location, all SFH parking alley-accessed, and no front-loaded driveway; otherwise at least 1 space reserved for the ADU, placed to the rear with alley/side-street access.
Rental Restrictions
- –Short-term rentals prohibited for both detached and internal ADUs; no other rental term limits stated.
ADU State Law
What can you build in Florida?
- –Florida does not have a statewide ADU mandate. There is no state-level requirement for cities or counties to allow ADUs.
- –ADUs in Florida are regulated entirely at the local level. Some jurisdictions allow ADUs broadly, others allow them with strict conditions, and some prohibit them altogether.
- –Florida Statute 163.31771 is optional. It allows local governments to adopt ADU ordinances for affordable housing, but it does not require any jurisdiction to allow ADUs, and local governments may adopt ADU rules outside of this statute.
- –County and city rules may differ. In unincorporated areas, county zoning controls whether ADUs are allowed; within city limits, municipal zoning codes apply.
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
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ADU rules in other Florida municipalities
Rules change at the town line. Check the municipality your property is actually in.
Pinellas County
BelleairBelleair BeachBelleair BluffsBelleair ShoreClearwaterDunedinGulfportIndian Rocks BeachIndian ShoresKenneth CityLargoMadeira BeachNorth Redington BeachOldsmarPinellas ParkRedington BeachRedington ShoresSafety HarborSeminoleSouth PasadenaSt Pete BeachTarpon SpringsTreasure IslandUnincorporated Pinellas