Here's a question I have, and it may be a bit naive, but how would anyone know?
If you're in an RV, you may be moving around periodically and if asked, then you are on vacation or travelling.
If you live in a tiny house on wheels, the answer would be the same, or it's a workshop/MIL suite/spare room for visitors, etc.
If you live in a tiny house that is stationary, I'd imagine you'd do everything to not draw attention to yourself and if anyone asked, then it would definitely be a storage shed, workshop, etc? How would anyone be able to dispute that? Would they have to get a search warrant to go in to see what's inside?
In my case, I could easily say I am living with my parents or Brother as their land is next to each other, but I do not want to draw any attention to myself but what would happen if some official came out? I wouldn't have to allow them inside, would I? If not, then what would I worry about?