A Washington lease agreement is a document that outlines the terms of a rental between a landlord and a tenant. Create an attorneydrafted Washington lease agreement with stepbystep guidance.Download to PDF or MS Word. The Washington (state) rental agreements are contracts and forms designed to aid in the process of renting residential or commercial property to a tenant. A Washington standard residential lease agreement is a oneyear rental contract between a residential landlord and their tenant. Set the terms for renting property. A Washington standard residential lease agreement allows a property owner to rent a home to a tenant for monthly rent. A Washington standard residential lease agreement is a legal document that landlords and tenants use to guide the rental of a property rental. A Washington lease agreement is a written rental arrangement between a tenant and a landlord of residential or commercial real estate.