My question is, are there any rules preventing me from working exclusively with investors?

I am licensed and Real Estate has been my full-time career for the past two years, my partner recently left her nursing job and is helping me scale the business now that we are planting roots here. 

It's better to prevent any "targeting" in the first place! 

It can also be used in a wall near pipes to keep them from freezing if freezing is a problem, but it will provide heat that keeps the building warm and will prevent freezing. 

There's a similar property that just went under contract and there's potential to make a good hunk of change with the one I'm looking at, but didn't know if anyone had experience with a ROW preventing a sale or  being able to get a good market value for it.Also the adjacent lot the ROW is shared with does not appear to be inhabited.

Either you sell at a higher price and give him the controlling unit or somebody else sells and you're left holding the bag.This guy wants the whole building to take it private and convert to apartments.Somebody else will stand in his way and prevent that, but their life will be miserable. 

I currently live in northern California and I'm very ready to get out and put down roots elsewhere.

There are self rental rules in the Internal Revenue Code to prevent this. 

Also very interested in networking with anyone (attorneys, CPAs, agents, brokers, property managers, investors) to begin laying down some professional roots in the RE space :)

I told him he's in violation of the lease.My insurance agent told me to include me as an additional insured in the tenant policy to get notified and prevent problems related to cancellations.