AR HB1503

Municipalities must allow at least one accessory dwelling unit (ADU) by right on any lot with a single-family dwelling, without requiring public hearings, variances, or special permits

ADUs may be attached, detached, or internal to the main dwelling, but detached/attached units cannot exceed 75% of the main home's floor area or 1,000 square feet, whichever is less

Municipalities cannot require additional parking, owner occupancy, matching exterior design, familial relationships between occupants, or separate water/sewer connections for ADUs

Development impact fees for ADU construction are capped at $250, and application review fees cannot exceed $250 per unit

Any conflicting local policies, regulations, or ordinances in effect on or after January 1, 2026 are invalid; municipalities retain authority to regulate short-term rentals and may adopt more permissive ADU policies