What I didn't know at the time that I started this thread was that the opinions about BTC run strong both ways: the bulls are excited, and the bears assert their positions about how foolish it is. 

I do because I am the owner of the property bearing financial responsibility.

For years, they’d used this site to stockpile soil from other projects, in lieu of moving it offsite (cost savings). 

For example, I’m doing three side by side duplexes and it’s costing me $135 psf, but I had to spend an extra $10k per foundation because of bad soil, and the smaller the property the higher the cost psfI’m working on a 28 unit with elevator, demo required, green roof, and it’ll cost me around the same psf as the duplexes.I’m doing three side by side triplexes which are full renovations, basement digout, all new facades, and that’s costing me about $106 psf for construction Non of these numbers include architecture, geotech, MEPS, environmental, utility plan, or finance costs

Possibly could be a load bearing wall, not sure. 

If you want this to be a real business, test out pricing levels to see what the market will bear.

Saying management shouldn't differ based on class of property is like hunting a bear using a fishing rod.

Offsets, root/soil intrusion and some build-up in the pipe.

Hard money can be a bear for a first-time flipper.

Deductions are a matter of legislative grace and the taxpayer bears the burden of proof, both of production and persuasion.