ADUs are allowed in Unincorporated JeffersonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Jefferson, AL
Is your property eligible for an ADU?
# of Properties
560
Owner-occupied
43%
Zoning districts
223
Avg Home Value
$181,298
Median Lot Size
1.03 acres
Avg Income
$71,150
Residential Types:
560 housing units
Residential
100%
Zoning Districts:
161,254 parcels · 223 districts
A-1
26%(42,591)
R-1
13%(20,328)
R-4
10%(15,526)
R-2
9%(14,173)
Other
43%(68,636)
ADU Rules
What can you build in Unincorporated Jefferson, AL?
Unincorporated Jefferson, AL 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 in-home apartment size: 40% of the principal dwelling’s square footage.
Detached ADU Size Limits
- –Maximum 40% of the principal structure’s square footage
Owner Occupancy
- –ADU occupancy restricted to the owner's family; affidavit required.
Parking
- –1 space/ADU; on-lot parking required; no remote parking for ADUs; general residential parking applies county-wide
Rental Restrictions
- –Renting to non-family is prohibited; short-term rentals are prohibited.
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 Alabama municipalities
Rules change at the town line. Check the municipality your property is actually in.
Jefferson County
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