Hi John! While we can’t provide legal advice, here is a general guideline to follow:
Firstly, you cannot legally force an eviction by changing the locks. Unfortunately, you will have to initiate an eviction by first serving the notice to vacate on the premises and then filing a lawsuit in the Washington District Court where you reside. Make sure you check the WA rules for how much time to give in your Notice to Vacate.
Good luck!
