County of Harris. §. General Bill of Sale – This form would be used, generally, between two private parties to prove the sale and purchase of the personal property.Bill of Sale to a Motor Vehicle. A bill of sale is a legal document that outlines the purchase of property between a buyer and seller. It commonly includes both parties' information. The Texas bill of sale form verifies the elemental facts of the sale of personal property in exchange for a predetermined compensatory amount. I agree to make payments according to the Payment Schedule in this contract. If more than one person signs as a buyer, I agree to keep all the promises in this. Download one of our bill of sale forms to transfer ownership of an item from one person to another. They've been Houston's trusted used car dealership since 1979 with a great selection and inhouse financing options.