Question: what happens if landlord doesn't return deposit in 21 days?
Answer: RCW 59.18. 060 says that a landlord cannot be held responsible to cover the costs of damages caused by tenants or their guests. ... Tenants may still pursue the return of their deposit if the landlord did not get a written response to them within 21 days, or if the landlord did not perform a written checklist upon move-in.