You have a lot of professional investors, but it is quite fragmented, and mostly concentrated on the lower end of the market. 

If you do not need the cash flow to live, you should concentrate on the wealth building.  

The subject property has a heavy concentration of students and student rental activity.

I would concentrate on doing that the old fashioned way, likely to be quicker really.

ASU uses things like Orbit transit shuttles among other offerings which snake around different areas giving you higher concentration of students around them. 

If you want the possible higher income from a duplex, then any of the four major cities in Tennessee are going to have great opportunities and I would concentrate on university areas.  

Concentrate on achieving your goals like your life depended on it.

@Isaac ElYou should concentrate on homes that owners abandoned rather than pestering people for the reasons I cited, that has no reason to sell the home to you.As you are in NY State, the state developed a registry of Zombie homes that you can obtain information on the owner: Zombie homesMost of the properties are in foreclosure or pre-foreclosure, though for insurance reasons the banks still keep it in the owners name.

Is it that one entity/person owns a high concentration of units?

@TonyMarcelle, if you're looking for the pathway to making it in notes, concentrate on brokering *performing* notes.