Great to hear that there are places that aren't draconic about having a mobile home on private property. I live in the mobile home/RV Capitol of the world, Elkhart, Indiana. Very few private property lots here for moved. Gotta be in a park. $600/month lot rent.
When you think you may want a permanent structure, Google Bini homes. Concrete construction. Costs start around $3,500, and their Quonset but shape help make the sounder than a stick and brick home.