WA state residential landlord tenant act, RCW chapter 59.18, landlord's right to increase rent

As far as I know, there is no community in WA that has rent control. As long as the landlord follows any needed notice requirement, the landlord can charge as much for rent as a tenant is willing to pay. Do you have any agreement with the landlord that limits the amount of the rent increase? You may want to check around to see if the amount the landlord is demanding is competitive. If the amount is too high, you can try to negotiate with the landlord.