Wondering.. do I need to get any permitting or anything to add electrical to the room, flooring, closet, and make a small room?

It is so portable you could take it on trips and set it up at every hotel you stay in.

Living room was converted to a master bed with walk in closet and and bathroom with heated floors and walk in shower.

Should be evaluated by specialist.11) Water staining present on the ceiling in family room in main house where the roof seam meets between the main house, and un-permitted area12) A few closet doors have been damaged and need to be replaced.13) Another window needs to be serviced because it won't shut14) Need to add fire alarms to bring up to code15) Looks like the kitchen needs to be re-done16) Bathroom repair- fix some slight leaks, a couple toilets, re-do caulking in tubs, re-do flooring and base moulding17) Recommends replacing water heater, and HVAC.

Remove coat closet for big fridge with ice maker.Respect for tapers.

Living room converted to a master bed with walk in closet, bathroom with heated floors and walk in shower.

Sewage , they need the portable tanks to empty into the septic tank on different days .  

New construction of the basement with a beautiful master suite and walk in closet, as well as a family room and laundry.

Inside a Closet: Drill baby drill all day long.

If the 203k route doesn't work, my next suggestion would be to throw drywall up and call it a closet and close on a 5 bed 2 bath.