We are in the midst of an exciting period of growth for our property management company.

I would equate it to managing yourself when you are not set up to manage properties.There is scalability in this...Now to play the Devils advocate if you get autopayments set-up you can always figure out how much interest was paid each year and what your payoff is so just decide how competent you are in that and be honest with yourself, there is nothing wrong in outsourcing parts of your business.

What are some of the main things you look for in a great Property Management company?  

At 4 it's getting complicated, and thinking of 10+ makes me angry in advance.How do you manage having internet service at multiple locations?  

I've read in a book that Real Estate Investment in Japan is often referred to as a "Scientific Investment" because it can be managed with profitability that is close to the simulation of earnings based on prior calculations of yields.

She did sign a rental agreement via AirBNB and my property manager.

Talk to brokers local investors and property managers.

What is generally needed to become HUD certified property management company? 

I own & manage 27+ STR & MTR.  

This includes details about the current market trends, investment opportunities, challenges faced, property management considerations, and any other factors that may be pertinent to someone considering real estate investments in these areas.I am open to any advice, suggestions, or recommendations.