Our local planning commission passed rules on 'food truck parks' such as they have to provide restrooms.

I wanted to find out if I can convert it into a room ,extend the ac into that area ,electric outlets and then if possible add a restroom with shower.

Hi @Donald Howaniec thanks for your reply, we had hired an inspector, he didn't say anything like "permit" , we started thinking about added toilet/restroom then I came to know about permit things, there is already a room in basement, I have doubt they pulled permit for it, because it's made in very temporary way. so now I am started thinking when inspector will come for toilet inspection, can he raise question on room, if he raise question on room then previous owner will be responsible or us?

Especially since you're looking at some tent sites, make sure you know what the requirements are for restrooms, showers, etc.  

A good template for small units is one, maybe two offices that are 150-200 SF each, a restroom, maybe a kitchenette, and the rest can be warehouse/workshop space.

restrooms kitchen ect?

I spent a couple years while in the military on a team to renovate the building my unit was using (25,000 sq.ft. building with offices, restrooms, etc.).

I think that is a selling point for any one regardless of age, to have a restroom on the same level as the bedroom

The chemistry between him and other roommates isn’t quite there (such as cleaning habits and sleeping habits).he doesn’t clean up after himself in the restroom or kitchen very well and decides to cook late at night and play piano at 1am.

The existing infrastructure includes an RV park with 16 hook-ups, complemented by an impressive 81,000 square feet of diverse buildings, featuring a state-of-the-art 54,000 square foot indoor arena, a 26-stall indoor horse stable, a 40-stall covered barn, public restrooms, and a 3,500 square foot, 20-foot ceiling insulated metal building.