Secure your transaction with our notarized bill of sale template. Some of the information provided on the form is about the seller, the buyer, and the property being sold.This form will require notarization. For notaries commissioned or recommissioned on and after January 1, 2016, the seal must also contain the notary public's Secretary of State ID number. How to fill out the Texas Vehicle Bill of Sale Form? If the property being sold is of significant value, the parties may wish to seek out a notary public to witness their signing. County of Harris. §. Notaries Public ; 2301. Application for Appointment as a Texas Notary Public - General application and bond form to become a Texas notary. Information. All sections of this form must be properly completed in order for this document to be accepted.