The declaration must be signed in front of a notary public and the document notarized. A legal document acknowledging that a couple is engaged in a domestic partnership or in a relationship and living together.Form must be legible, and both partners must sign the application before a Notary Public. They can fill out a Domestic Partnership Registration Affidavit. Do we complete the Domestic Partnership Registration Affidavit in advance? Domestic Partnership ordinance (both partners must sign). 7. Have the document notarized and submit with fees and utilizing a delivery method below. Part II, Chapter 15 of the North Port City Code.