California residency is required of a person in order to be issued a commercial driver's license under this code. An Affidavit of Domcile is a sworn statement that you file with your county testifying that you intend to domicile in a new state.Hi there, I have been a life time resident of the State of California. I have been full-timing for over 10 years and only leave the state on short trips. Welcome to the Golden State! If you're new to California, learn how to get your driver's license and register your vehicle. This article is a detailed exploration of questions about residency, domicile, and all their ramifications. Learn how California residency laws affect taxes, domicile, and expats. Discover steps to establish or terminate residency for tax purposes. Drivers license, three pieces of mail to a California address.