This looks like many things but here are some idea starters for you:- Ensuring that payments are automated for receiving rent, paying mortgage, paying utilities- Ensuring the lease version used is up to date & calendar notifications are on for renewal periods- Tenant screening process is defined and followed- Turnover process is clear and team is in place- etcIf you need a CPA suggestion, I love Samantha Kelley.

That said, I also pay an annual "seat" license to my PM in addition to the 10% of gross rents. 

A good deal could be that the upcoming vacancy presents the owner a unique opportunity to reposition and add value the property (basically finding a tenant that pays higher rent and therefore raise the NOI). 

even suburban submarkets are red hot right now in miami like leisure city, homestead, florida city you can still get infill lots one of the last few places in miami dade county right now. rezoning and variances you can do even better. if you are limited on capital ground up construction and land might be something to consider in miami in these submarkets.

Do you group paper receipts into folders for each property/entity and then pay bills once a month, for example?

@Justin R. how much are you willing to pay for a montly subscription per door, or are you expecting this for free?

@Kurt BeadlingWhat were you willing to pay?

learn a lotFortunately, I found RentSpree let me run credit report using tax ID, and back ground search.

It's a bet on the future appreciation, maybe generates enough income in the meantime to pay taxes and insurance, chances are no cash flow. 

You need representation that has a lot of experience to avoid common issues like early terminations, performance of that location for tenant, etc..Rule #1 is make sure you are happy with market rents for the building (not what current tenant is paying).