RCW 59.08.030

Complaint.

Such proceedings shall be commenced by the filing of a complaint executed under oath by the owner or landlord or his or her authorized agent. It shall be sufficient to state in such complaint a description of the property with reasonable certainty, that the defendant is in possession thereof and wrongfully holds the same by reason of failure to pay the agreed rental due, or the monthly rental value of the premises.
[ 2010 c 8 § 19003; 1941 c 188 § 3; Rem. Supp. 1941 § 814-3.]