Sure people get notices but they get calls, door knockers and agents in addition to direct mail by the truck loads especially if there is equity. 

I've found they were a lot better when they gave a range vs an actual number.

My home was one of the last to actually get a true 2 family C of O our of hundreds of homes in the developmentI was told in the beginning to NOT rent the apartment out because it can be a liability if the tenant finds out that there is no C of O, and then I can get in trouble if they report it.

It's required actually by the IRS.

At which point where's almost no principal paydown, etc. so if the market just stays flat you actually *lose* money when you exact the strategy.  

Has anyone heard of this actually being an issue?

I would absolutely talk to zoning to see if what you are wanting to build will actually be allowed.

So this is obviously my first post, I actually have been following Biggerpockets for quite a while.

New investors sometimes spend a lot of time trying to learn how to set up their business, assemble their team, set up their systems... all of which are great and necessary eventually, and they make you feel busy, but none of them actually make you money.

Thanks Alex, actually an area Northeast of Downtown called Near North or Ryon... rapidly gentrifying area, think a cheaper Heights.