John Mack and his wife Christy purchased the site for $13.5 million in 2009 and spent six years renovating the structure, which previously served as a horse stable. The redesign converted the former horse showers into a kitchen and incorporated original hoof-scraped ramps as wall paneling.
Wednesday, October 21, 2026
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John Mack Lists $80M Townhouse to Beat NYC Record
Culture8 days ago
A former chief executive of Morgan Stanley has put his bulletproof Upper East Side mansion on the market to potentially set a new Manhattan price high. The property is currently the priciest townhouse for sale in New York City with an asking price of $80 million, which would surpass the current city record of $77.1 million. The residence spans roughly 16,000 sqft over six floors and includes six bedrooms.
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