Every state and county has a place where the undesirable people stay.

, but you have  to remember - you are weeding out tons of undesirables by having an application fee at all.  

Basement masters are pretty much undesirable.  

Developers ended up creating entire communities that reeked of cheap construction and undesirable locations.

Quote from @Edwin De leon:What do you mean by "  negative cash flow or super high cash flow on the riskiest MFs " are you referring to poor undesirable areas when you are telling me ............... " that it can range from negative cash flow to super high cash flow on the riskiest MF's " Yes or No also when you say super high cash flow on riskiest of MF's ... give examples of what you are referring too for riskiest of MF's not clear on this at all LOST As a general rule, nicer areas tend to have lower cash flow than undesirable areas.

You're buying properties that are currently undesirable, and making them desirable.

Without reading everyone's posts, here's my two cents:2% rule is more for 4 units and up (at least in my area, Central Maine) OR 1-4 units that are cheap, in undesirable locations. 

These circumstances center around property that’s so low priced, needs so much work, so unattractive to home buyers, or so undesirable a location, that COMPETENT realtors are not interested in listing the property, oR acknowledge that an offer is not likely in a reasonable period of time.  

You are paying for them to make 2 trips, one to hang and mud the drywall and the second is to prep for paint.

The more you put on the eviction they will drag you through the mud line by line