The DOB says 46 stories and 478 feet for the Atelier. No one lies to the DOB.
Add another 20 or so feet to that (because the DOB does not count rooftop mechanical floors in their calculations) and the very top of the structure should be around 500 feet.
Btw, there is suppose to be retail space in the Atelier.
When you were there, were you able to see where this space was supposed to be at?
All I can tell is that huge white lobby from your pics.