Residency Requirements. The Registrar Office must determine your legal residency before you can register and pay fees for any semester or session.Domicile refers to the place you call home permanently. Your domicile is important for legal purposes such as paying taxes, voting, and claiming benefits. Paid out of an estate. Domicile. The one place that a person chooses as home and has the intention of returning to if this person ever leaves. 1. a dwelling place : place of residence : home 2. Law a : a person's fixed, permanent, and principal home for legal purposes Please note: Students also may be required to complete a Residency Affidavit. PRIMARY RESIDENCE DEFINITION: A Primary Residence is your one and only main residence where you or a qualified family member resides.