ADU rules in Arkansas
Representative cities: Little Rock, Fayetteville.
ADU permit rule
Permit requiredCase by casecity authority
Fee basis
Valuation-based; Little Rock minimum building-permit fee $50 (work over $5,000 or requiring inspection).
Typical timeline
Varies
Setback
—
Area threshold
Not size-exempt
Exempt if
None — an ADU always requires a building permit where local zoning allows it.
Go / no-go
case-by-case
Arkansas has no statewide ADU law. ADUs are allowed only where the local zoning ordinance permits them (e.g., Fayetteville allows ADUs). When permitted by zoning, a full building permit is required.
ADU official sources: Arkansas State Fire Marshal — Fire Prevention Code · City of Little Rock — Planning & Development
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Frequently asked questions
Do I need a permit to build an ADU in Arkansas?
Per Arkansas rules, an ADU is "yes" for a permit and the authority is "city". Arkansas has no statewide ADU law. ADUs are allowed only where the local zoning ordinance permits them (e.g., Fayetteville allows ADUs). When permitted by zoning, a full building permit is required. Always confirm with the issuing building department.
How big can an ADU be in Arkansas?
Size limits for an ADU in Arkansas are set by local zoning — verify with your city building department.
What are the ADU setbacks in Arkansas?
Setback rules vary by city in Arkansas; confirm with the local planning or building department.
How much does an ADU permit cost in Arkansas?
Fee basis: Valuation-based; Little Rock minimum building-permit fee $50 (work over $5,000 or requiring inspection).