In general, domicile means a residence in fact, coupled with the intent to make the place of residence one's home. Washington State offers specific templates designed to simplify the process for legally domiciled adults.A Washington domiciliary who intends to move at a future date is still considered domiciled in Washington. All domicile must be established at least one year immediately prior to the first day of the quarter the student is seeking residency. Hello, We will be starting our new fulltime adventure next month but researching where to establish our domicile. One option would be to use a relative's or friends address as your legal domicile. Another might be to use an attorney or business agents address.