The house was already a STR, but I spent ~$10k for light refurnishing, touch up painting and deep cleaning to make the listing more attractive.

Or maybe even just focus on properties with a very light rehab?

The truth is majority of light rehabs in Chicago are done without permits so you will be bidding against people on the property who aren't pulling permits and have a very different total rehab cost.

According to the US Energy Information Administration, oil production in the US has tripled from 2008 to 2020.

We had a home energy assessment evaluate first to get a 0% interest loan for the work. 

But I did want to say, the calculator at https://pvwatts.nrel.gov/ was spot on for predicting how much energy I harvest (in Ohio).

Many fourplexes also need light cosmetic remodels which might make these be a perfect fit if you're up to the challenge.

Light rehabs with lower holding periods can work at higher all-in %'s since your exposure to risk (via timeline) is reduced and your holding costs are reduced on quicker flips where conversely, you may need more room for a full gut to the studs rehab as your timeline of holding period will be much larger (as well as your risk factors). 

I receive many pricing guidance requests for Freddie & Fannie Multifamily loans, so I figured I can shed some light on how I as a banker price loans.

No lights, no TV, no phone.