ADUs are allowed in Unincorporated St. LucieTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated St. Lucie, FL
Is your property eligible for an ADU?
# of Properties
26,080
Owner-occupied
75%
Zoning districts
63
Avg Home Value
$364,204
Median Lot Size
0.25 acres
Avg Income
$76,770
Residential Types:
26,080 housing units
Single Family
94%
Other
6%
Zoning Districts:
51,317 parcels · 63 districts
PUD
25%(12,614)
RS-4
25%(12,585)
HIRD
20%(10,233)
AG-5
5%(2,370)
Other
26%(13,515)
ADU Rules
What can you build in Unincorporated St. Lucie, FL?
Unincorporated St. Lucie, FL follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Conditional Use Permit
- –Detached ADU: By Right
Detached ADU Size Limits
- –Maximum ADU building footprint in Town/Village districts by lot type: 625 sq ft (Live/Work, Rowhouse), 800 sq ft (Cottage, Sideyard, House), 1,000 sq ft (Estate).
Max Units
- –1 ADU per lot on Live/Work, Rowhouse, Cottage, Sideyard, House, and Estate Lots; 0 ADU per lot on Mixed-Use Building Lots, Retail Building Lots, Apartment Building Lots, Apartment House Lots, and Countryside Tracts.
Rental Restrictions
- –Guest house must not be rented under any circumstances; Workforce housing ADU may be rented only to qualified households
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.
St. Lucie County