Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.

It is increasingly more difficult to pay of even one mortgage when you are cashflow negative, let alone multiple.

To say this community has no value is quite a negative judgment to make without sufficient information to make it. 

Mostly people with minimal RE experience are adding a single ADU and they often make that choice based on cash flow without taking into account the negative equity position.  

I contacted Buildium and they confirmed they do not offer credit card tracking, but offered a workaround which was to set up a credit card as a bank account, and when there is a balance it's just always negative in the bank account, and this would allow you to track individual purchases like it was a checking account.  

I have not had a single one of the negatives people seem to think is above.

, misc.You are in different reality if you believe you are not negative on that property

I only own 2 properties that are rented out at the moment.  

Like you we had 3 teams of two door knockers  2 for safety one women one man.. and we door knocked every NOD in our 2 mil MSA  all to boil it down to if we were very lucky to get 2 to 3 deals a month.. now we were a little different I only would buy very high equity deals.. and we leased back .. because as you state 99% don't want to leave.. 

Which of course is actually a negative for participating in speculative madness.