Bill Summary: HB 6521

• Requires municipalities to allow one accessory dwelling unit (ADU) by right for all single-family dwellings without additional lot size, coverage, frontage, or space requirements beyond those for standard single-family homes, effective October 1, 2021.

• Establishes detailed zoning standards for ADUs including interior door requirements for attached/interior units, adequate parking provisions, water/sewage requirements, owner occupancy options, minimum 750 square-foot size limits, and prohibition on requiring familial relationships between occupants.

• Reduces affordable housing set-aside development deed restrictions from 40 years to 30 years and allows set-aside development owners to receive 25% of property appreciation after 5 years of occupancy, with additional percentages available for longer occupancy periods.

• Prohibits real estate brokers from entering into "list-back agreements" that give brokers exclusive listing rights for future sales or rentals of properties following initial transactions; any such agreements are void and unenforceable.

• Increases penalties for unlicensed real estate broker activity from $1,000 to $10,000 fine and establishes working groups to study rental unit accessibility for communities of color and Section 8 voucher holders.