RCW 19.445.050: Enforcement.

(1) The attorney general or a city, town, or county may enforce this chapter through a cause of action in a court of competent jurisdiction including declaratory relief, injunctive relief, or other legal or equitable remedy as appropriate to carry out the purpose and intent of this chapter.

(2) A city or town may enforce this chapter with respect to real property located in the city or town. A county may only enforce this chapter with respect to real property located in an unincorporated area of the county.

(3) Nothing in this chapter prevents a city, town, or county from enacting or enforcing an ordinance imposing a civil penalty, or authorizing other relief, for a violation of a local ordinance that is similar to the prohibition in RCW 19.445.020.