It’s a 2/1 750 sf house built in the 1920s with  a concrete wall foundation and partial basement.   

Hey @Marc Shin, you definitely need more art on the walls and color.

When it comes to taxes, the key to successful planning is documentation; retain all records of spending, as all those costs can be deducted.”

Since you retain control of your money, how does one consistently maintain 30-50% cash on cash return? 

I want to learn as much as I'm able to retain as quickly as possible. 

Windows would be my next check-point (less than R1) and then wall insulation: I would not be surprised if they have no insulation inside, but you can do blow-in, which only requires a small hole.A home looses heat in two ways: heat conduction (which you can slow down with insulation) and drafts, which in old houses is usually the biggest culprit.

I sold the other Class C while it was vacant - I saw the writing on the wall so decided to cut my losses. 

Kitchen cabinet handles were placed upside down, cabinet doors were installed backwards, electrical line for thermostat was ran on the inside of the bedroom exposed, trash swept into newly installs vents from the furnace, cracked tub, wall switches were installed sideways in some rooms, wall outlets were installed upside down on some walls, list goes on.

It is common for rental property investors to feel the pain when a property turns over but keep in mind that is why we retain security deposits for you. 

The effect of this process is that the portfolio is constantly improving by retaining the best properties and jetison the under performers.I've bought and sold over 1,000 properties, and people always ask me "How many doors?"