Domicile can be tricky - luckily, we have experienced attorneys! 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. You need a street address. Places like the Mail Box store. The first thing you will need to do in order to establish RV permanent residence in any state is acquire an address in the state. Domicile is generally defined as the place to which you intend to permanently return, even after temporary absences. In short, you have one, and only one domicile; however, you may have many residences—in theory you could have a residence on every street, everywhere. You should be able to gain residency in either one without an issue. OTOH if you want to save a bunch of money then make Nevada your domicile.