ADUs are allowed in RiversideTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Riverside, AL
Is your property eligible for an ADU?
# of Parcels
1,385
Zoning districts
11
Avg Parcel Value
$187,512
Zoning Districts:
1,373 parcels · 11 districts
R-1
53%(727)
R-5
20%(271)
A-1
9%(128)
B-3
9%(117)
Other
9%(130)
ADU Rules
What can you build in Riverside, AL?
Riverside, 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 attached/internal ADU size is the lesser of 1,200 sq ft or 50% of the primary dwelling’s floor area.
Detached ADU Size Limits
- –Maximum size of 1,200 sq ft for a detached ADU (backyard cottage)
Max Units
- –1 attached or converted ADU + 1 detached new construction ADU or MADU + 1 JADU
- –Two-unit developments on an undivided single-family lot: up to 2 ADU/JADU units total; urban lot splits: max 2 dwellings per resulting lot (ADU/JADU count toward 2)
- –Multifamily: conversions: at least 1 ADU and up to 25% of existing multifamily dwellings; new detached ADUs: proposed MF max 2; existing MF max 8 and not to exceed existing units; MADUs not permitted.
Owner Occupancy
- –ADUs have no owner-occupancy requirement.
Parking
- –0 spaces per ADU/JADU; no replacement parking required if a garage, carport, or covered parking is converted to an ADU or demolished; no parking required for the ADU/JADU.
Rental Restrictions
- –Short-term rentals (<30 days) prohibited; ADUs, when rented, must be for terms longer than 30 days; room rentals are capped at 2 occupants per single-family property (up to 4 with a room rental permit) across the primary dwelling and any ADU/JADU.
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.
St. Clair County