Mark Schwartz, chairman of Goldman Sachs Group Inc.’s Asia-Pacific operations, bought a rare free-standing mansion on Manhattan’s Upper West Side for $14 million.

The deal for the 12,000-square-foot (1,115-square-meter) home on Riverside Drive closed Aug. 8, according to records made public by New York City’s Department of Finance.

The four-story house at the corner of 107th Street is the last fully detached single-family mansion in Manhattan, according to the property listing by Tod Mercy of the Corcoran Group brokerage. It was built in 1909 by William Tuthill, the designer of Carnegie Hall, and was commissioned by Morris Schinasi, a Turkish tobacco baron.

Schwartz, 59, agreed to pay 3.7 percent more than the last asking price of $13.5 million, according to property-listings website StreetEasy.com.

The 12-bedroom, 11-bathroom house, surrounded by private gardens and overlooking the Hudson River, “is an exquisite French Renaissance jewel box executed in pristine white marble, boasting deep-green roof tiles and bronze grills on the balconies and at the main entrance,” according to the Corcoran listing.

Mercy, the broker, didn’t return a call seeking comment. Schwartz, who is based in Beijing, didn’t immediately respond to an e-mail after normal business hours.

Schwartz left New York-based Goldman Sachs in 2001, returning in June 2012. In the interim, he served as chief executive officer of Soros Fund Management and later chairman of MissionPoint Capital Partners, according to his biography on the bank’s website.

Schwartz first joined Goldman Sachs’s investment-banking unit in 1979 and became chairman of the Asia business and a member of the company’s management committee in 1999, the same year that Goldman Sachs went public.

The seller of the mansion was the estates of Hans and Beverly Smit. Hans Smit was an emeritus professor at Columbia Law School who died in January 2012 at the age of 84, according to the university’s website. His wife, Beverly Smit, a teacher at the Spence School, died five weeks later, according to a notice published in the New York Times.