For a monthly deal: In almost every area of Washington, the landlord doesn`t need a reason to ask you to move. They just need to let you know in writing in advance that they want you to deviate. In Washington, you can have two types of lease for one month and one lease with a fixed lease. A monthly rental agreement can be concluded verbally or in writing. While a fixed lease must be a written agreement. A fixed lease is a legally favorable document that binds both the tenant and the owner to the agreement of the rental property. The landlord cannot increase the rent unless the tenant agrees to it during the tenancy period. After a tenancy expires, the landlord must return the deposit within 14 days. .