In the late ’60s Donald bought 785 acres of swamp and marshland in northeastern Miami-Dade County, on which he built a mall, office buildings and condo towers in what’s now the town of Aventura. The high-end mall–housing Emilio Pucci, Cartier , Fendi and the like–is today one of the highest-grossing shopping centers in America, with sales of $1,642 per square foot. (The national average is $474; sales per square foot for malls in Miami have risen 36% since 2008, according to the International Council of Shopping Centers.) Erin Carlyle , FORBES STAFF Real estate: markets, luxury homes, and cities. This story appears in the July 20, 2015 issue of Forbes. Subscribe Elle McPherson (L) and Jeffrey Soffer during Pritzker Architecture Prize 2015 at New World Symphony on May 15, 2015 in Miami Beach, Florida. Photo Credit: John Parra/Getty Images for Pritzker Architecture Prize HOUSEHOLD NAME? Maybe not, but in Miami Jeffrey Soffer is a local celebrity who hobnobs with the global variety. Married to former Sports Illustrated swimsuit model Elle Macpherson (below), Soffer, 47, has hosted Kate Hudson on his yacht and is friendly with Gwyneth Paltrow. Meanwhile, thanks to his hefty stake in Turnberry Associates, the real estate development company founded by his father, Donald, Soffer–who’s co-CEO with his sister, Jackie–debuts as a billionaire. In the late ’60s Donald bought 785 acres of swamp and marshland in northeastern Miami-Dade County, on which he built a mall, office buildings and condo towers in what’s now the town of Aventura. The high-end mall–housing Emilio Pucci, Cartier , Fendi and the like–is today one of the highest-grossing shopping centers in America, with sales of $1,642 per square foot. (The national average is $474; sales per square foot for malls in Miami have risen 36% since 2008, according to the International Council of Shopping Centers.) ADVERTISING The family also owns the legendary celeb-hub Fontainebleau Miami Beach, an immense hotel with a trendy nightclub and two Michael Mina restaurants. Soffer owns 72% of the hotel and a sizeable chunk of Aventura Mall, plus stakes in the family’s other hotel, office and residential properties in Florida; FORBES estimates his net worth at $1 billion. (Jackie’s smaller Fontainebleau holding brings her net worth to less than $700 million.) Turnberry’s biggest current project, in partnership with New Jersey’s LeFrak developers, is turning a 183-acre former city dump in North Miami into a community with 4,390 condos, shopping, a movie theater with table service, and more. Also in the offing: the Turnberry Ocean Club condos in Sunny Isles Beach just east of Aventura–not yet built but already marketing two 54th-floor penthouses for $35 million each. Donald Soffer, 81, who recently married his fifth wife, Michele, at the Fontainebleau, has fathered seven children. One son, 32-year-old Rock Soffer, just a few years ago discovered that he was part of the billionaire family. He now works in the family business and has an office in Aventura.