Very interesting, I would have liked to have done something like that when I was a teen. To have your own little house is better than just your own room. The only problem I have with that house is the bathroom toilet and how that works, I would want to upgrade it to like any modern trailer would have.
I guess getting the license permit would be the first thing to do then the trailer to build it on. I worked at a building supply chain of stores called "Scotty's" for 8 years, it was much like the popular "Home Depot" stores are here in the US, I was the lumberyard supervisor for about 4 years, and I also worked the big warehouse, and I was in-charge of all the forklifts. I taught the employees how to drive them and all the instructions on how to drive them, and gave out the licenses, I was the main forklift driver there. Most days I spent unloading semi trucks and loading them.