A Washington lease agreement is a document that outlines the terms of a rental between a landlord and a tenant. Residential Rental Forms.A Washington lease agreement is a written rental arrangement between a tenant and a landlord of residential or commercial real estate. Discounted set of the following forms: 13.5A Rental Agreement, Dwelling Unit Only, Page 1 13.5B Rental Agreement, Dwelling Unit Only, Page 2. A standard residential lease agreement is a fixed-term rental contract between a landlord and a tenant who pays monthly rent for the use of the property. Utilize this agreement template when renting an apartment in Washington. It covers all legal aspects like lease term, rent amount, and apartment rules. Set the terms for renting property. For utmost convenience and reference, we offer fillable and printable Washington, DC residential lease agreement forms available online.