This bill establishes new regulations regarding the authority of owners' associations in common interest communities to limit occupancy by unrelated persons. Specifically, it prohibits associations, including apartment owners' associations, unit owners' associations, and homeowners' associations, from adopting or enforcing any restrictions on the number of unrelated individuals that may occupy a unit or lot. The only exceptions to this rule are occupancy limits on short-term rentals, as defined in RCW 64.37.010, and any lawful limits related to occupant load per square foot or health and safety provisions established by applicable building codes or local ordinances.

The bill adds new sections to chapters 64.32, 64.34, 64.38, and 64.90 of the Revised Code of Washington (RCW) to codify these restrictions. Additionally, it includes a provision that the new regulations will expire on January 1, 2028, unless further action is taken. This legislative change aims to enhance housing accessibility and prevent discrimination based on familial status in common interest communities.