Illegally it takes not much to open an RV park with whatever rules you want.

BYOP Bring Your Own Power for example. Let one guy live electricity free ifn' he wants, his neighbor can have solar, reasonable generator.

Have a honeywagon that services people's dump tanks, just roll weekly to each can and dump it, no need for digging. HW then takes waste to above ground septic tank, like how they clean the shitters in national parks, gigantic vacuum guy comes in [vacuuum sound]

RV FOR LIFE, this also means the war on 3/4 trucks and towing itself, Cash For Clunkers for exmple, has been ongoing. But, americans can strengthen the national RV and towing power, we can fix our trucks, make better ones. Let the new stuff die, the houses the new trucks, all garbage. Stick to the old ways.