In 1987, Rosen moved to New York City. He apprenticed at a real estate brokerage firm selling properties to German investors.
Real estate holdings
In 1991, he founded the partnership RFR Holding LLC with his childhood friend Michael Fuchs. Although the real estate market was in a downturn at the time, they had access to capital, initially using properties they each owned in Germany as collateral. Later they leveraged their access to German investors. Their strategy was to purchase large, vacant office buildings in need of an upgrade and hire quality architects to refurbish them to high standards. In the 15 years after RFR Holding was established in 1991, Rosen acquired a large portfolio of office buildings, including the Seagram Building, purchased for $375 million from the Teachers Insurance and Annuity Association in 2000, and Lever House. In 2006, Rosen partnered with Ian Schrager, a longtime friend and co-founder of Studio 54, to transform the 123-year-old Gramercy Park Hotel by using minimalist architect John Pawson. In 2014, they put the hotel on the market for $260 million, after completing a 4-year $200 million renovation. In 2006, Rosen announced plans to develop the site at 610 Lexington Avenue in NYC into a glass hotel and condominium tower to be designed by Sir Norman Foster.
Lever House Art Collection
is a collection of works commissioned by Rosen for display at the Lever House. It is curated by Richard Marshall, an art historian and associate curator for the Whitney Museum in New York. The Lever House Art Collection was inaugurated in 2004 featuring a work by Jorge Pardo. Other works have included: Bride Fight by E.V. Day, Hulks by Jeff Koons, and Hello Kitty by Tom Sachs.
Outside the United States
Rosen and partner Fuchs hold a large real estate portfolio in Germany, especially in Frankfurt, his natal city. In early 2007, they bought the headquarters building of the European Central Bank. The company also owns the Swift Haus Jungfernstieg in Hamburg. This portfolio is administered by their office in Frankfurt.
Personal life
Rosen has been married twice. In 1991, he married Elizabeth Mina Wechsler in a Jewish ceremony at The Pierre in Manhattan. Before their separation in 2000 and divorce in 2004, they had two sons, Gabriel "Gaby" and Charles "Charlie". In 2005, Rosen married Dr. Samantha Boardman, a psychiatrist and socialite. Boardman is the daughter of D. Dixon Boardman, who founded the hedge fund Optima Fund Management, and Pauline Pitt, a banking heiress. Boardman graduated from Harvard University and Cornell University medical school. She converted to Judaism. Together, they have had two children Alexander and Vivian.
Personal residences
Rosen resides on the Upper East Side of Manhattan with his wife and their two children. The family summers in Southampton, New York where they have a $21.5 million home. In 2011, Rosen bought the A. Conger Goodyear House in Old Westbury, New York on Long Island for $3.4 million. The house was designed and built in 1938 by Edward Durell Stone in the International Style for Anson Conger Goodyear, the first president of the Museum of Modern Art. He completed a several-year renovation of the property. Rosen keeps many of his important pieces of art there, including The Virgin Mother, a 13-ton, 33-foot-high bronze sculpture by Damien Hirst of a pregnant woman, with peeled skin and exposed fetus. In 2012, Sheikh Hamad bin Jassim bin Jaber Al Thani, the former Prime Minister of Qatar, reportedly bought Rosen's 71st Street New York townhouse for $47 million. Rosen is also reported to own a $36 million vacation home in Saint Barthélemy. Rosen is known for his annual dinner party at the W South Beach during Art Basel. It has drawn a mix of celebrities and business leaders.