After Olivier Sarkozy bought a combined townhouse at 226-228 East 49th Street in the Turtle Bay neighborhood of Manhattan in April 2014, and shortly before he married Mary-Kate Olsen in November 2015, the couple kicked off what was supposed to be an ambitious, top-to-bottom renovation.
But things didn’t go according to plan. The renovation stalled, the couple divorced earlier this year, and now Mr. Sarkozy, a banker who is the half brother of the former French president Nicolas Sarkozy, is selling.
“They never lived there,” said Michael Bolla, an agent at Sotheby’s International Realty who is listing the property. He said that Ms. Olsen, the former actress and fashion designer who founded The Row with her twin sister, Ashley, is not an owner.