Domicile refers to the place you call home permanently. Your domicile is important for legal purposes such as paying taxes, voting, and claiming benefits.(e). "Primary residence" means a residential dwelling unit that a person physically occupies and lives in on a day-to-day basis. 1. a dwelling place : place of residence : home 2. Law a : a person's fixed, permanent, and principal home for legal purposes A "household" refers to all persons occupying a housing unit as their primary place of residence. The following is a list of some documents that may be recorded if they meet all requirements, and a description or definition of each document.