For more information, contact customer service at 360.902.3770. Forms are available online at dol.wa.Access bill of sale form templates and learn how to transfer ownership of vehicles, boats, firearms, and other high-value personal items in Washington. The forms include a property description, purchase price, date of sale, and other terms of the transaction. Gov or at any vehicle licensing office. Create a Washington bill of sale to document the transfer of ownership for vehicles or other personal property. What information is required to complete a Washington bill of sale?