

ADU rules for Decatur
Accessory Dwelling Unit (ADU) Rules for Decatur, AL
Is your property eligible for an ADU?
# of Parcels
25,310
Zoning districts
36
Avg Parcel Value
$234,068
Median Parcel Size
0.29 acres
Zoning Districts:
26,661 parcels · 36 districts
R-2
34%(9,153)
R-3
13%(3,501)
R-1
10%(2,599)
R-4
7%(1,922)
Other
36%(9,486)
ADU Rules
What can you build in Decatur, AL?
Decatur, AL follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not addressed in the local bylaw
- –Detached ADU: Not addressed in the local bylaw
Max Units
- –0 ADUs per lot
Parking
- –2 spaces per dwelling unit; no maximum; ADU spaces must be in addition to the primary dwelling's spaces; B-5 Central Business District off-street parking provisions do not 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 Alabama municipalities
Rules change at the town line. Check the municipality your property is actually in.
Limestone County