General Affidavits are written statements of fact used to support your case or verify facts that are sworn to be true in front of a notary public. Discover a stepbystep guide to creating a general affidavit with Bryan Fagan, PLLC.Understand the legal requirements. A properly completed, notarized general affidavit form can be useful in legal proceedings. Here's how to make sure your affidavit is valid in Texas. (Personalized Seal). 100 Dolorosa Room 123 San Antonio, TX 78205 Phone: 210-335-2678 Fax: 210-335-3998 Monday - Friday AM - 5: Customer: how do you file a general affidavit in bexar county? Furthermore, Texas law mandates that the general affidavit must be signed in the presence of a notary public or other authorized official.