The forms include the title (if applicable), a signed trailer bill of sale form, and a valid Ohio driver's license or state identification. An Ohio Trailer Bill of Sale is a document that provides legal proof of the change of ownership for a carrying platform.To apply in person, you will need to visit any Ohio County Clerk of Courts Title Office with your valid photo ID and payment of title fees. The Trailer is to be sold free and clear of any liens, encumbrances, or mortgages. Include make, model, year, VIN, and trailer condition details. If the trailer weighs less than 4000 lbs in the state of Ohio ownership can be transferred with a bill of sale and the certificate of origin.