JackieIs there any way they can go and visit the current PM and also meet the new PM, or even ask the new PM to go by the office of the current PM to see if they can see if they are still in business?

If you have no experience in commercial real estate, much less mobile home park management, this is an intricate business not well-suited for out-of-state when you are getting started.

Quote from @Benjamin Finney: I'm curious what real estate investors and private money lenders like myself use to inform their businesses strategy and predict future market conditions.

I am a 23 year old who recently graduated from college with a business degree focusing on real estate finance and development.

Tough environment to focus on studies. 

I found a really nice brick building with 12 apartments, 3 commercial business units and some garages.

How's the wholesaling business going?

Bossier partner managed property and repairs while we managed business structure and banking account setup.

For instance, if you're in some of the well known markets that multi-family does very well in ( Boston, Columbus, Etc. ) , multifamily could be a great starting point for your investment business. 

As for valuing the property, keep in mind that the properties are valued based on NOI, just like any business.