Big Time Banker John J. Mack Lists Duplex Penthouse

SELLER: John J. and Christy Mack
LOCATION: New York City, NY
PRICE: $22,500,000
SIZE: 3,650 square feet, 4 bedrooms and 4.5 bathrooms (plus a staff suite)

YOUR MAMAS NOTES: Back in the fall of 2009, former Morgan Stanley CEO John J. Mack and his wife Christy (reportedly and allegedly) coughed up $13,500,000 for a tired but still stunning 33-foot wide Beaux Arts style carriage house with private garage on the Upper East Side owned by high society horticulturist Bunny Mellon who used the 100-plus year old building as a storage facility for her pricey gew-gaws and doo-dads.

Whatever upgrades and renovations Westchester County-based Mister and Missus Mack made to the comely carriage house must be complete—or nearly complete—because they've recently tossed their duplex penthouse pied-a-terre atop an historic pre-war condo building on East 63rd Street on the market with an asking price of $22,500,000.*

The floor plan included with online marketing materials shows the approximately 3,650 square foot penthouse has four bedrooms and 4.5 bathrooms, plus a prison cell-sized staff room with attached bathroom.

The main living spaces are on the lower level and include a 26-foot long room with fireplace that Mister and Missus Mack use as a living/dining room combination. The original dining room is set up in listing photos as a library/den that connects directly through to narrow but recently renovated kitchen.

A long corridor off the entrance hall connects to a small guest/family bedroom with large private bathroom and a large master bedroom with decorative fireplace, three closets and a bidet-equipped bathroom.

Upstairs there are two more guest/family bedrooms, both with two closets and private—not to mention properly windowed—en suite bathrooms. Also upstairs are laundry facilities, a 27-plus foot long all-glass solarium with city views and built-in wet bar and an approximately 625 square foot private terrace furnished with what appears to be a whole lotta high-priced patio furniture designed by Richard Schultz.

Listing information suggests the Mack's duplex spread was decorated "in the spirit of" the very proper and 5-star Dorchester Hotel in London. As far as we can tell that means it's all a bit frou-frou, decidedly traditional and a wee bit stuffy but very correct if not exactly exciting.

Property records show Mister and Missus Mack's property portfolio also includes an 8,512 square foot house on 3-plus acres in Rye, NY, at least five bay and ocean properties—three with houses, two vacant—in the upscale seaside community of Wilmington, NC.

*For the record, property records show this penthouse owned by a corporate entity that links directly back to a residential address in Rye, NY owned, according to property records, by Mister and Missus Mack.

exterior photo: Nicholas Strini for Property Shark
(interior) listing photos and floor plan: Sotheby's International Realty