I also have a clause in my lease to permit HVAC maintenance 4x per year, I change the furnace filter. 

Have drawings and maybe permits going.

(As an aside, this program also permits a child to buy for a parent.)But if you just want to buy to rent to your child, you can certainly do so.

She’s also saying that Mobile Home has an un-permitted addition this extra room is a covered porch turn into storage space which is allowed.

If they see ANY construction going on they'll put a stop order on your door and make you pull a permit and their inspection process is terrible.

In my area you can look up building permits online.

If zoning permits you to build another detached structure, you should definitely do that.

To find contractors you can use online avenues like thumbtack, angieslist, Facebook groups, BBB, or go old school and directly network; hang out around the permit office or Home Depot and ask for cards/contact info.

The city of Chicago is a pain when it comes to permits. 

Throw my skin in the game with my plan after meticulously working all the details.. labor contracts permits and the such when the time is right5.