See Evans v. Luster, 84 Wn. App. 447, 450, 928 P.2d 455 (1996), noting:

If a contract is illegal or flows from an illegal act, a court will leave the parties as it finds them. An agreement to violate a statute or municipal ordinance is void, except when the agreement is not criminal or immoral and the statute or ordinance contains an adequate remedy for its violation.