You can report the sale: • In person at any vehicle licensing office (vehicles only). Nope no notary required.In Wa the owner can just sign the title and hand it to you. Does a bill of sale have to be notarized in Washington? Most states in the US do not require a notary or public official to witness and authenticate the signing of a bill of sale. What forms must I fill out? The Washington Bill of Sale form is a legal document that facilitates the transfer of ownership for items such as vehicles, boats, or personal property. A bill of sale in Washington does not require notarization if you plan to register your vehicle or vessel in person. A Washington bill of sale is a form that documents the sale or trade of an item from one person to another.