Of course, every owner's situation is unique and factors like the legal entity involved, purchase date, adequate passive income that can be offset with the cost segregation study, etc., will need to be considered.

So, all parties over 18 need to sign the lease.If they are going to sign the lease, why wouldn't you screen them?

Anything beyond that makes me wonder if he might stay too involved.

Sounded like there was heavy paperwork involved.  

The founder appears to have been involved in businesses outside of real estate: ‘My dream is a locally made grooming products business’ | People | nashvillepost.comSo it does not appear there is a lot of track record there, but those are questions I would ask.

“How” they live together is more involved.

I've done a couple of direct loans, but for the most part, I work with a mortgage broker who brings deals to me.

Of course, growing has inherent risks involved.

Companies that know what they're doing don't get involved with the race to the bottom. 

Understand the fees involved and calculate the total cost for an entire year of management so you can compare the different managers.