@Jonathan Cook Thank you!

Is she a smoker?

As the story goes, I received a letter from Cook County (A.k.a CrooK County) saying there is a violation against the property. 

It can be brutal in Cook county. 

From the left, there is an argument that it drives up neighborhood prices (I happen to believe this/worry about it for certain zip codes) and for the right, there's a reticence to embrace change and, consequent, fear of pot smokers and partiers.

Here is an example for Cook County:http://www.cookcountyassessor.com/assets/forms/divpetition.pdf

15 degrees is the temp threshold for cook county/chicago. 

I am guessing tenants will at minimum pay electric and maybe cooking gas.

Nowadays, water run about $100/month per apartment, and even here, for $50K it's not worth it, particularly if I have no problems to begin with.On the other hand, for a side by side duplex, the cost of re doing the plumbing may be minimal.I looked into separating gas charges for a co-worker, who rents an apartment, and the landlord splits the monthly $30.00 cooking gas bill with him.

By doing that, we’re saving quite a bit because the tenants were already paying their cooking gas.