Wall Street titan’s $80M bulletproof UES mansion could set Manhattan townhouse record

Key Points:

• John and Christy Mack have listed their converted Upper East Side carriage house at 165 East 70th Street for $80 million, potentially setting a new record for the highest townhouse sale in Manhattan history.
• The 16,000-square-foot mansion, originally a 1902 stable designed by C.P.H. Gilbert, underwent a six-year transformation led by Christy Mack, preserving its limestone facade and integrating historic elements like virgin chestnut wood from the original ramps.
• The home features extensive luxury amenities including a private wellness club, a 13-seat screening room, a 6,319-bottle wine cellar, six fireplaces, three terraces, a private garage with curb cut, and state-of-the-art security measures such as a bulletproof front door.
• Purchased for $13.5 million in 2009 when it was a distressed garage, the property was fully renovated with modern comforts like radiant heating throughout, a snowmelt sidewalk system, and updated HVAC, making it a turnkey, highly functional residence.
• The Macks are selling as they plan to retire to North Carolina, and the listing agent emphasizes that the home combines historic charm with practical luxury, offering a rare combination of features rarely found in Manhattan townhouses.