I am planning on going after a few retail centers at Auction that look good.

All the properties i own here in my opinion are already significantly lower priced by the tax assessors compared to retail value.

First you need to do some homework, find out what the home is worth in its current state, if it is distressed, how much to get it rental ready or for a retail sale?

I have always thought about growing my real estate portfolio and have massive passive income (thanks to Grant Cardone 10x and thanks to Brandon for bringing him to the podcast).

It would have to be enough to compensate them for relocation expenses, plus something extra to incentivize them to move.Apartment complexes do this all the time when someone wants to tear down the complex and put up a retail center, office building, etc.

I personally am not a big fan of multifamily, duplex, triples, apartments and the like, but do have interest in possibly trading my best SFRs for 5 unit office warehouse or retail strip in Forsyth County for better yield and passive income.

Specifically I focus on retail and larger multifamily properties.

When I semi-retiree from my corporate job in two years I may look into retaking the classes and getting my license then since I might have time to play the retail side of things. 

@Alex Stepanov it's unfortunate that you are getting this kind of treatment from local agents.Yes, we are very busy in our extremely active market but I couldn't image treating anyone like you've be so far.I know in our office of 65 retail agents, most [all] don't like to deal with investor because they "low ball" and only buy low end properties and the commission is very low.Your reasonable ROI goal of 7% can be done easily.Have you selected a property manager yet?  

Retail/Flip, yes.