You can be a Washington resident if you are registered to vote in the state, have a state professional license or possess a business license in the state. "Fixed residence" means a building that a person lawfully and habitually uses as living quarters a majority of the week.They must reside in Washington for at least 183 days of a calendar year to qualify as resident for that year (this d. Establishing residency means more than merely having a Washington state address for a year. In most cases, a Washington resident is someone who lives in the state for one year immediately prior to starting their college or program.