I'm an investor and realtor in South Florida, concentrating in Palm Beach County. 

There are students peppered around right now, but not concentrated (yet) - to Stephanie's point - mentioned earlier in the thread.  

In my world of private equity and LBOing businesses, these types of events can occur as you’re dealing with an actual business that sometimes is cyclical, has customer concentration, etc.

We also have a very concentrated banking industry {aka Big-5}.  

Hey guys,I live in the Fort Walton Beach, Fl area and I'm looking for a good lawyer and CPA with concentrations in the local real estate market.

Let's concentrate on rental properties and possibly do a deal together soon.

We can also see the "concentration" of rental properties per zip code (vs. all residences), which when combined with an "A, B, C, D Neighborhood" classification system (see this blog post for a simple explanation) can paint a pretty specific picture about what micro-markets might work for a given niche & strategy.

Or you could use a DST to absorb the debt very easily and 1031 into two free and clear properties and a dst.What this does is to allow you to 1031 into the lake home and concentrate the equity in it. 

As an investor, where do you concentrate your efforts?

The biggest difference is that all the expenses, income, and managing is concentrated in one property.