I am in Pinellas County as well and lately Holiday and Crystal River has been a hot spot. 

Charleston is still crazy hot and any decent detached SFH is selling for $250k distressed or $400k+ on market.

Quick Insights:Hot Areas: Some Memphis spots are heating up for ROI – it's not just BBQ that's hot around here!

The boat & RV is usually the first to go.But we are certainly in interesting times right now as RV's & Campers seem to be in hot demand with some places having a hard time keeping them in stock and on the lot if it's a good deal.  

Both are older homes, the 3/3 was renovated in the 80s.2/1 home is prime candidate for a tandem house out back or teardown and convert to Rowhome zoning, (properties were recently rezoned just across the alley tandem homes, ADU already zoned ok) 3/3 is newer, on a double lot, but my thinking is that I could hold these for a while, go through the rezoning process and sell both if/when the neighborhood continues to get hot enough for more density building, possibly work with a contractor friend of mine to get going in this direction, or try to do construction of tandem home behind 2/2 and then adu behind 3/3 home.Are there any resources for spreadsheets or analysis specifically in this realm/that I could show my financiers to calculate the projections on this?

You'll also get bombarded with solicitations for 'hot leads' and 'done for you marketing'... these shiny objects don't always pan out and you should be cautious when considering anything that makes lead generation seem 'easy'.Tons more to consider as you get started.

So you may go through more people before you find someone hot for the unit to vet.

The U.S. is in much better shape and we still have a hot job market with high consumer spending.

Heat, and Hot water is included in the rent. 

Either that, or the "hot prequalified leads" gig, where they skim- off the cream from the results you just paid FAR to much for!)