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.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. My name is___________________________________________. I am of sound mind, 18 years of age or older, and competent to give this affidavit. The UPS Store at 5090 Richmond Ave offers notary public services in Houston, TX at your convenience. Download the Texas residency affidavit for free. Fill in the template, sign and notarize online with PandaDoc. In order to complete an online notarization in Texas, you'll need the following: An original, unsigned document (Don't sign it before uploading! Complete the notarization properly.