If you're planning to domicile in Texas while you're a full-time RVer, there are many steps you should take to establish your domicile. Domicile can be tricky - luckily, we have experienced attorneys!Texas, South Dakota, and Florida are the three most popular states to use as your domicile if you are a full-time RVer. An Affidavit of Domcile is a sworn statement that you file with your county testifying that you intend to domicile in a new state. Interested in establishing your domicile in Texas? Take a look at the steps below to understand what tasks and forms should be completed. You don't have to establish residency but if you're living in another state temporarily, yes they expect their portion. Basically, it's a place to call home (kind of).