Learn about the affidavit of domicile, its role in probate, and how to notarize it online with a legal document notary. This affidavit is made for the purpose of securing the transfer or delivery of property owned at the time of the decedent's death to a purchaser.How Do I Fill Out an Affidavit of Domicile? Complete the enclosed Affidavit of Domicile attesting to the decedent's state of residency, and have the completed form notarized. An Affidavit of Domicile is a concise legal document affirming a deceased person's primary place of residence at the time of death. - Notarized Affidavit of Domicile. - Completed Waiver of Probate. An Affidavit of Domicile is a document that acts as a written solemn oath that verifies where someone lived when they died. An affidavit of domicile is a legal document that certifies the residence of a deceased person.