And if it were set up where everything went through a title company so the buyer pays the title company, they manage the buyer's loan (from me), and the title company ensures my mortgage is paid without my direct involvement... what parts of the transaction would feel risky or not worth the headache to you? 

Are you needing a long term or bridge loan?

DSCR loan How did you add value to the deal?

I would upgrade properties every 12-15 months as allowed by low down payment loans if my significant other wasn’t risk adverse and opposed to moving.

If they can afford to stay, chances are they need to refinance and get the X name off the loan.   

Minimum loan amount is $250k.

Or, depending on the property you could go non-QM with like a DSCR loan and close in an LLC or partnership.

They will go up to 100% loan to value or LTV (or used to). 

I'm a Realtor with a couple properties listed in Boise, ID and a neighboring town for my investor/client that are currently rented as co-living or rent-by-the-room and getting killer income. (7.3% - 9.5% Cap rate) So far, every inquiry has been baffled by the concept of co-living or rent-by-the-room and immediately ask if they're being run as a halfway-house (which they are not).

I do not have any loans through Flagstar Bank, but I would talk to them prior to moving it into the LLC.