Im also aware that things can fluctuate in Baltimore from block to block.

Had I known, I would've bought an entire block!

If the blower wheel is plugged up full of hair, get an HVAC tech out to clean it.Go around the house to all of the air vents, and make sure the flaps in them are open (use the little handle/lever/knob that sticks out of the grille), and that they don't have a rug or furniture or something blocking them off.Sometimes people will turn the thermostat down and then close the vents to try to regulate the temperature - if this goes on long enough, the evaporator (A-coil, inside coil) can get ice on it, which really blocks the air flow. 

Totally agree with you.Real estate investing is extremely local - down to the street or block level.

I am looking to get a reference for a contractor or two that can add a bathroom to a block house in Tampa.  

I was thinking a 2/1 on concrete pilings, no basement. 

One of the big stumbling blocks I see with flippers is - they don’t evaluate well and purchase at too high a price.

Closing costs includes contractor, concrete inspector, plumbing inspector, lender fee, mortgage broker fee, and any other crap that needs be.

I have an hour each morning blocked out to run comps for investors.

It’s not going to be perfect, and would just go off general averages, however, ai highly doubt those averages are refined enough to get down to niches, such as a home on the lake vs a home four or five blocks away will likely have vastly differeing occupancy rates.I use its general averages as an indicator of whether or not I want to even bother with an area, if I decide to I then go in and find direct comparable homes and gather data from those ones specifically to create a much more accurate projection.