Hammering Man no Longer Hammers Alone

You won’t see it from the street, but the Wamu/SAM conjoined construction project along 1st and 2nd Avenues will have a 17th-floor roof garden. A hard hat said it will be “a park-like setting, complete with a stream, and full-grown trees.” I wonder if we'll see deer running through.
SAM’s plate is way full these days with three projects underway simultaneously. How do they have time to do their art and stuff when they're in the construction biz?