Mobile Home, Off-Highway Vehicle or Vessel. As a seller, there are certain things you should know before selling a vehicle, including the process to transfer the title.License plate; Decal; Registration certificate. A certificate of title is the proof of ownership to a motor vehicle in the state of Florida. License plates belong to you, not the vehicle. When you sell a vehicle, within 30 days, you must complete the Notice of Sale section on the back of the Certificate of Title or HSMV 82050. 10 votes, 37 comments. Hello! Motor vehicle dealer – Any dealer registered with the Department of Revenue (Department) to sell motor vehicles.