Are there any verbal agreements or arrangements between the current Landlord and Tenant?

These are the people you want to get to know and form a relationship with, @Timothy Johnson.Brokers are intermediaries and make or arrange loans between parties.

Lack of affordability in homes will drive people to either rent or become creative with their living arrangements. 

You can certainly arrange that!

You set up the lease with payroll, and you get your money twice a month if you like, even in a temporary duty arrangement!

However, I think arranging the sale of real estate in expectation of a fee without a license isn't right or legal.Crazy idea - How about calling the Ohio REA in Columbus and asking them?

Hello Fellow BP Family,     I have arranged an amazing seller financing deal, for a property with 24 rooms prior medical facility.

If anyone might be interested feel free to reach out and we can arrange a zoom call and get something going. 

That way if he’s putting in half the money and you’re putting in half the money it will be a fair and equitable arrangement for all parties.I would also reduce everything to writing including the worst case scenario in the event something goes badly so that there are no disagreements or misunderstandings moving forward.

I'm wondering if an interesting arrangement of apartments and shops might be in the cards for that strip?