It sounds like you have an un-permitted unit, which is essentially always a risk since there has been no notice to the AHJ that it exists and they can therefore initiate a code case to have it removed in most cases.

A lot of Chicago workers are moving to this area to escape IL taxes and politics.

Secondary financing is generally permitted, and the realities of the marketplace usually require the seller to carry financing for most buyers.

Zoning and Permits: Make sure to check the zoning laws and permit requirements for building an ADU in the area. 4.

all materials, all labor costs to others, Not you, utilities, interest payments, permits, licenses, auto/truck expenses, tools needed are all deductable. 

Developers will not be able to get these bonus building permits without providing such TDR credits.  

If so, were permits pulled & were they installed by a professional5.Are any of the homes rented to students6.Is there a flat roof7.are there asbestos shingles8.

We then reach out to those contractors and onboard them like any other contractor - so we ensure insurance is up to date, workers comp in place, licensed etc.  

Having watched many prior co-workers get paid, cash their check at the casino, and promptly deposit it all into a slot machine I can tell you with pretty good certainty that casinos don't have a positive effect on disposable income and good use of the existing income in the area surrounding :)Are there solid local employers OTHER than the casino in a 15-minute drive? 

If you are a hard-worker, feel free to send me a PM, I might have know someone looking for a faster learner I can introduce you to.