Financial Institution, proceed to section B below. 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.An Affidavit of Domicile is a concise legal document affirming a deceased person's primary place of residence at the time of death. 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. How Do I Fill Out an Affidavit of Domicile?