An individual in a long term care nursing facility is likely to have diminished capacity.A little detective work may lead you to the facility, but that may not be helpful as laws will interfere with facility revealing if your party resides in their facility.You might find your owner but not be wise to get your purchase docs signed by this person. 

Although I stay away from the low income properties for the most part I know a lot of the guys in that space and could maybe give you some recommendations. 

Being a bit on the conservative side, you should expect utilities to be maybe $1500-2K per year.  

The harder part is getting and choosing comps.

In our area judges are overturning subject to deals when they are completely one sided and one party gets nothing and another party get something.

One party took extra long to see the place, so they overlapped with another appointment.

This deal almost died multipule times, with issues regarding third party approval of the short sale, and FHA required repairs in order to close, and each time I hit a road block, and my agent and myself were scratching our heads Upen was there to point us in the right direction. 

The  reality is you may REQUEST an extension, but it doesn't have to be honored, and of course both parties waste time and effort. 

These are documents the attorney has prepared which are defensible in court and which have only the parties, property addresses, etc. left blank.

I know there is a lot of buzz going on about using 3rd party crowdfunding sites for your deals.