@Erik Pedersen Its definitely extremely risky to buy without viewing the interior but they why these properties often sell at a significant discount.

Just about everything I'm seeing needs cosmetic work on the interior: finishes, kitchen, bathroom, etc.Port Richmond is the next town over, away from center city.

By Nov 2018 .Mortgage was for 64000 current owners 24000.Property would have a value of a minimum of 190 though I know he is a hoarder and the interior will need a lot of work and some work on exterior.

Once I have finished all the interior unit doors over a week or two, I then do the exterior doors.

Looking at the interior pictures, seems to be in decent shape also. 

No money dedicated to moving or eliminating interior walls. 

I'm currently in a similar situation where there's no pictures of the interior but one side of the duplex is rented.

Add some updated (but cheap) exterior lights and interior LED lights (either recessed or swap out bulbs)If bedrooms only have 1 dome light, could consider adding a nice big fan/light combo. 

All units are interior so you have to walk through halls to get to the units.

@Michael Breedlove  As you are an owner occupant, you may be able to get a home equity loan, but I would not expect a very high appraisal given your recent purchase and they are typically conservative drive-by appraisals (so your interior work will not be considered).