I can see that from investors. It would be nice for a family to have the option of staying in a condo if they decide to have more than 1 child. When I had a condo I was a bit wary when the investor units outnumbered owner occupied units.
I am surprised it would be the end of Nov. At their current pace, I think the building, or at least the lower floors, should be ready well before Dec. It could be some other milestone/permit/etc. that they have to meet first.
BTW, any non-construction related discussion will probably be moved to the "Real Estate" thread. See the the link at the top of this thread.