Use our Affidavit of Domicile form to verify the last home address of a deceased person to speed up the inheritance process. View the Affidavit of Domicile Form Instructions and Details in our extensive collection of PDFs and resources.Must be signed in the Presence of Notary. An Affidavit of Domicile is a document that acts as a written solemn oath that verifies where someone lived when they died. Fill in the name of the decedent at the top. 2.2. Complete Form ET-141 if it is claimed that the decedent was not domiciled in New York State at the time of death. How to fill out the Affidavit of Domicile Form Instructions? 1. Obtain the Affidavit of Domicile form. 2.