Motor Vehicle, Mobile Home, Off- Highway or Vessel Description. Year. The buyer and seller must sign the bill of sale, which can be used to register with the state.Create Document. PDF. Learn about Florida Bill of Sale requirements. Get forms and templates to document the sale of items such as cars, boats, horses, firearms, and more. Use our free Florida bill of sale form in order to legally buy or sell personal property like vehicles in the state of Florida. Keep copies of the bill of sale (FLHSMV recommends having it notarized), certificate of title or other type of transaction document showing it was sold. This document serves as proof of ownership and allows the seller to report the sale to the DMV. The form includes the details of the vehicle.