Motor Vehicle, Mobile Home, Off- Highway or Vessel Description. Year. Florida law requires sellers to file form HSMV 82050.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. DEpending on the County, you also have to fill out the bill of sale form and tag return and send to the County Tax Office. Did you just buy a Florida vehicle from a private party? Let us help you fill out your title for transfer!