Rehabbing the entire building, bathrooms, kitchens 2 of the units were pretty good, plumbing electric, painting, etc.

Water heaters don't cost that much and are pretty easy to install.

That's a ballpark, obviously since expense margins can be higher or lower depending on the park and most parks aren't 100% occupiedStill typically requires a calculator, but like Bill said, it's pretty quick. 

I'm am pretty new here to Bigger Pockets.

This is pretty common on tax sale properties.   

But if its a double your pretty much stuck with the water bill.

That's pretty cool that your county's site has that option.

I'm pretty new to the area, but I will have to go check out the bike path sometime this week and see what you're talking about. 

Only to see the bank then list it with an agent for much less than they bid at the foreclosure sale They seem to be pretty inefficient

I'm pretty sure no one is handing out deals in Brooklyn, so it's concerning that I cannot figure out why this particular building is cheaper.Thanks again,Max