RCW 36.70A.698: Accessory dwelling units—Off-street parking—When prohibited.

(1) Except as provided in subsection[s] (2) and (3) of this section, through ordinances, development regulations, zoning regulations, and other official controls as required under RCW 36.70A.697, cities may not require the provision of off-street parking for accessory dwelling units within one-quarter mile of a major transit stop.

(2) A city may require the provision of off-street parking for an accessory dwelling unit located within one-quarter mile of a major transit stop if the city has determined that the accessory dwelling unit is in an area with a lack of access to street parking capacity, physical space impediments, or other reasons supported by evidence that would make on-street parking infeasible for the accessory dwelling unit.

(3) A city that has adopted or substantively amended accessory dwelling unit regulations within the four years previous to June 11, 2020, is not subject to the requirements of this section.