A residency affidavit is a sworn, notarized statement confirming your residence address. You might need one for a driver license or identification card renewal.Making affidavit is simple and easy, Just follow below steps, Step 1: First and foremost, prepare draft affidavit in word format. Simpler, smarter, safer. Our mobile notary services for Salt Lake City Utah is available 24 hours a day, 7 days a week, 365 days a year. You complete a Certificate of Service or Proof of Service form that describes how and when you served the papers. The purpose of an affidavit of domicile is to verify a deceased person's permanent residence. In Utah, a small estate affidavit is not filed with the courts. A proof of residency affidavit serves as a formal declaration confirming an individual's address.