The city scanned the required plans themselves, not just the usual cover page, and they're pretty interesting. See at http://a836-acris.nyc.gov/Scripts/DocSearch.dll/Detail?Doc_ID=2009122800476002
Note differences between the full-floor apartments, apparently for custom work done for those in contract.
The PH is enormous, with six or seven kids' rooms (I lost track,) a LR and three rooms for guests, two-room staff suite, and on and on.