If you dig into the guys who are pulling down large numbers of doors in a year, they are doing it out of state and they have money partners. 

I will be paying about 45k per door for these units and they will be paying me $3000/yr each or $18,000.

My early goals were to buy so many houses at $200 a door.  

Scale and iron build up will excellerate wear and tear on anything that water touches including dishwashers, water heaters shower doors etc.  

@Sam Shueh its 720 sqft 2/1 the interior just nees TLC, needs new cabinets, and tile in the kitchen and carpet, paint, the whole interior,couple lighting fixtures, It has a finsihed basment which could bump this property to a 3bed if they buyer wants the house was built in 1952 exterior looks really nice, the owner pays a fee to have everything serviced the roof will probably need to be changed in about 2 or 3 years, foundation is solid, garage is solid no cracks or signs of leaking.

Has 3br/2ba with large den/fireplace and carport that could be enclosed easily for a garage.

@Mary Jo There’s no difference between occupying your own and renting the one right next door.

I would bet you’ll be lucky to get 100 bucks a door realistically when all the corrections are made and it’s running .

If you really are going to get rents closer to 30k, you'll be at roughly 8k/yr or roughly $100/door per month. 

4 Car Garage!