That said, I do assess late fees as soon as a tenant is late, so they know not to take me for granted.

My question is regarding all the banking/financial matters like collecting HOA fees or levying assessments.

Of course the $ amount is based on the area and the govt. assessed value of the home.  

Keep us posted as to your progress.

Ed-Just surveying the market, I see crypto currency making moves everyday, just interesting to watch the progression of this progressive currency.

To be more successful, you simply have to work on the other elements to progress your REI pursuit.

I was looking at a property today and the MLS has it listed as a Triplex, fully rented.I looked it up on the county tax assessors website and the last time it was assessed it has a property type "SINGLE FAM RES, HALF PLEX". 

My friend is 81 and progressing toward retirement.  

@Lyall Storandtyour assessment is spot on.

There are dozens of other factors in your criteria but you get the point for multi-family.If you're doing single family look for areas that have good school districts, large populations, high list-to-sales price ratio, low days on market, path of progress, etc...You don't need algorithms.