Collect a physical check (possibly using a lockbox). 

The full cycle takes at least 2 years and requires not just physical rehab but also improvements of the tenant base.

Because they don't actually send out a physical green card anymore,  it's all a matter of re-inspection and a PDF file being emailed, mailed or faxed.  

It seems less real than physically giving someone cash.

There are many things to consider to make a great remark like the location, its physical condition,  the demand in that area, and the first impression. 

Have a deposit, but won't be able to get a physical W9 until August. 

He seems a little desperate and kinda bugging me with over friendliness which I imagine is because of his physical challenges, I'm guessing but he seems friendly and skilled enough and we'd be working together replacing doors and refinishing/painting that formica covered composite wood stuff the boxes are made of and replacing the (horizontal) particle board.

Costin Iorgulescu talk to your tax adviser, but I would not hold physical real rental properties inside a SDIRA.

There are very unique opportunities like working with government to build and provide housing, or create a business that renovates rentals for individuals with physical disabilities... flats with wider doorways, handicap accessible bathrooms, lower counter tops, etc. 

I do not feel comfortable with buying a property that I physically haven't seen.Brian