Except for occupancy limits on short-term rentals as defined in RCW
64.37.010 and any lawful limits on occupant load per square foot or generally applicable health and safety provisions as established by applicable building code, city ordinance, or county ordinance, an association of apartment owners may not adopt or enforce a restriction, covenant, condition, bylaw, rule, regulation, provision of a governing document, or master deed provision that regulates or limits the number of unrelated persons that may occupy an apartment.