Former Morgan Stanley CEO John Mack paid $13.5 million for a Manhattan carriage house in 2009; after renovating the 16,000-sq-ft Upper East Side mansion, it is now listed for $80 million

Europe Science Fri, 16 Oct 2026 09:32:36 GMT Moderate confidence — 73/100

Pic credit: City Realty/ The AgencyFormer Morgan Stanley CEO John Mack and his wife, Christy, have listed their palatial home at 165 East 70th Street, according to a report by The Wall Street Journal.
The historic neo-Italian Renaissance carriage house, built in 1910 and later transformed into a spectacular residence by the couple, is asking $80 million.
If it fetches the asking price, it would become the priciest residential townhouse ever sold in New York City.

Pic credit: City Realty/ The AgencyFormer Morgan Stanley CEO John Mack and his wife, Christy, have listed their palatial home at 165 East 70th Street, according to a report by The Wall Street Journal.
If it fetches the asking price, it would become the priciest residential townhouse ever sold in New York City.

The historic neo-Italian Renaissance carriage house, built in 1910 and later transformed into a spectacular residence by the couple, is asking $80 million.

Sources: Times of India