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 legal document that certifies the residence of a deceased person. Create an affidavit of domicile with stepbystep instructions. An Affidavit of Domicile is a document that acts as a written solemn oath that verifies where someone lived when they died.