I sent an email to find out what the heights of The Monarch will be to certain points on the building. I also got some info about its design concept.
First, I learned a little bit about the design. The east and west sides of the tower at the top will have "butterfly wings" folding up from the mainroof. This is where the name "The Monarch" comes from. These will hide the mechanical penthouse which encloses the elevator motors.
The Monarch heights are:
323 feet to the top of the "wings". This is the official height of the building.
312 feet to the top of the mechanical penthouse.
300 feet to the mainroof.
287 feet to the highest occupied floor, (the 29th floor). That height is to the 2nd level of a 2-story unit on the 29th floor.
These heights came from RTKL Associates, Inc. which is the architect of the building. The heights came from the blueprints.
The renderings. Nothing new here, just posting for reference.