Washington Bill of Sale of Personal Property (Sold as Is). The following should be entered to complete the document: Buyer's Legal Name; Seller's Legal Name; Purchase Price; Item Description; Signature of Both Parties.Listing forms are available from your local county assessor's office. The listing must identify all taxable property located in the county as of noon on. Download Washington General (Personal Property) Bill of Sale Form template, modify and send for signing using BoloForms Signature. Download the Washington Bill of Sale form to securely document the transfer of property and ensure a smooth, legally compliant transaction. Personal property tax is due on most property used in conducting business. Access bill of sale form templates and learn how to transfer ownership of vehicles, boats, firearms, and other high-value personal items in Washington. Fillable Washington Personal Property Bill of Sale (Sold As-Is). In Washington State, both real and personal property are assessed for tax purposes.