A "resident," as defined in RCW 82.87. Your intent to remain in this place indefinitely makes it your domicile and makes you the place's domiciliary.Washington State offers specific templates designed to simplify the process for legally domiciled adults. All domicile must be established at least one year immediately prior to the first day of the quarter the student is seeking residency. Once you have lived in Washington for a full year, you can submit your residency application. A nonresident student who enrolls for more than six hours per quarter shall be presumed to be in the state of Washington for primarily educational purposes. This guide will explain how to prove domicile when filling out Form I-864 ("Affidavit of Support"). Consular processing support without the high price tag. Claims Washington as a residence for obtaining a hunting or fishing license, eligibility to hold public office or for judicial actions.