In order to be timely, payment of taxes must be postmarked on or before January 31st. IMPORTANT: This rendition covers property you owned on January 1 of this year.The Bexar County Clerk's Office Recordings Division files, records, and maintains Real Property Records, Personal Property Records, Notice of Trustee Sales. Complete list of Texas Comptroller Property Tax Forms and Applications click here. Texas Comptroller Property Tax Publications click here. I would recommend contacting the county appraisal district to further assist with what you should include when filling out the rendition form. Is it difficult to file a BPP rendition? Acquisition of Property and Existing Facilities. If two people own the property, both need to sign before a notary. 7. Acknowledgement: You do not need to fill out anything in this box.