I have been contemplating this question for a while now.  

I'm admittedly not a fan of private REITs because of the fees and illiquidity, but if you really want to go the private REIT route I happen to think Fundrise's fees are more reasonable.I've got some concerns with their business plan and would rather invest in other public mortgage REITs like STWD and LADR, but Ian has dug fairly deep into their fee arrangements.  

This arrangement is also known as an interest-free or principal-only mortgage.47) Equity PartnershipBorrowing money at a set interest rate is cheaper, but when funds are tight a partner can be a better alternative than going into debt.

Once you have a green-light, then you will need to pull the necessary permits to do the work and arrange for the (seemingly endless) parade of inspections as your job progresses.

We talked about a lease-to-own and land contract arrangements.

Let me know how you would like to arrange it.

... take the pictures or arrange for them?

Does her insurance company know she's turned it into a communal living arrangement?

Please message me so that we can arrange a time to dig deeper into your personal situation.

I dont completely know how to arrange this to happen on top of making him aware that this is common and not illegal.