Get caught with your pants down on paper first, it costs less. 

I trust my agent but I also would like to be able to verify what they told me was true especially when it cost me more money.

If you are in the actual SubTo community, there is no way they haven't been spam calling you and grouping you so you should have access to that inside of the Facebook page or paid groups.But, seconding @John Clark, if you are new as an investor, choosing SubTo is going to cost you a lot and get you a little.

You could even team up with other investors to split the costs. 

I would not get an attorney involved unless you just want to prove a point. it will probably cost you a few thousand and I am sorry but the attorneys involved  , your attorney and theirs will settle out of court. 

In the end, there could be a cost to any way you sell the home, I would just look at all options to see what fits your needs the best. 

They won’t give me just a quote for what it would cost for the same work in the first estimate.Am I obligated to replace or repair the AC?

Hands off ADU addition will cost significantly more than $100k.  

Hi @Irving Rivera - I think the old saying that "You get what you pay for" holds true in real estate investing too.I think Chicago neighborhoods like Garfield Park are great IF you have the right team and MOST IMPORTANTLY THE RIGHT TEAM COSTS $$$. 

However, there is a tax deferral strategy that could accelerate your depreciation, keeping more money in your pocket today, known as cost segregation.A Cost Segregation study is an IRS approved federal income tax tool that increases near term cash flow by utilizing shorter recovery periods for depreciation to accelerate return on investment.