'Domicile' generally refers to where you live – your residence that you intend to keep for the foreseeable future. A Declaration of Domicile is a legal document that identifies your principal home in Florida, with tax and asset protection benefits.Maintain a place of abode at: Address. Have you ever heard of a "Declaration of Domicile? " A Declaration of Domicile is a legal document that helps establish Florida residency. An Affidavit of Domicile is a legal document that declares your intention to make Florida your permanent and principal home.