

ADUs are allowed in Siloam SpringsTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Siloam Springs, AR
Is your property eligible for an ADU?
# of Properties
6,075
Owner-occupied
59%
Zoning districts
17
Avg Home Value
$44,197
Median Lot Size
0.24 acres
Avg Income
$79,119
Residential Types:
6,075 housing units
Single Family
86%
Other
14%
Zoning Districts:
7,832 parcels · 17 districts
R-2
63%(4,963)
R-3
13%(1,053)
C-2
7%(573)
P-D
4%(295)
Other
12%(948)
ADU Rules
What can you build in Siloam Springs, AR?
Siloam Springs, AR 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
Max Units
- –A-1: up to 1 ADU per lot; R-E, R-1, R-2: 0 ADUs per lot; R-3, R-4, M-H, R-O: none specified
Owner Occupancy
- –Owner must inhabit the primary dwelling on the lot.
Parking
- –No ADU-specific parking requirements; citywide rule: two off-street spaces per dwelling (may be reduced up to 30%; off-site parking within 300 ft via covenant; Downtown Parking District exempt if ADU is a separate unit).
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.
Check my propertyHow can we help you?
Get matched with trusted local builders
Understand what's allowed on your property
Learn the key rules and size limits for ADUs
Is your property eligible for an ADU?
ADU rules in other Arkansas municipalities
Rules change at the town line. Check the municipality your property is actually in.
Benton County