I recently shut down the business, so now I have a commercial buildling that has appreciated in value by about 60% since I purchased it. 

Hello,  does anyone have any idea what a reasonable market rent price would be for group homes?

BP has various tools to help you analyze your deals (rentals, flips, wholesale, etc). : https://www.biggerpockets.com/investment-calculators7.

For me personally, I would leave it a loft so the renter could have a playroom for kids, office space, family room, etc.

This is a very common agreement, in your space your problem and they also should have insurance that if its extensive insurance would cover it. 

In hindsight, I would have held on a little longer and kept holding long-term rentals.Flipping is great, but it's a job too. 

I have a W2 job and just getting started with real estate investing.

Quote from @Emory Clayton: From what I can tell, and my personal experience, you will have to lower standards so the Section 8 applicants can qualify.I'm not a fan of Section 8 because they tend to be far more problematic than tenants that pay their own bills.

Excited to have you in the community and hear about your journey into real estate.

I’d like to keep it with me only having equity and just paying partner back set interest rate until initial down payment is returned plus interest.