3. Stanley Kroenke
Net Worth: $7.4 billion
Forbes 400 position: 58
Stan Kroenke, next on the list of most successful real estate billionaires in America, grew up in a small town in Missouri, helping his father with his lumber company. His critics claim that his wealth is largely due to his marriage to Ann Walton, the Wal-Mart heiress, but the truth is Kroenke was rich before he met her. The marriage didn’t hurt, though, since he got to develop the land near Wal-Mart centers around the country. He also owns several major sports franchises, including Los Angeles Rams, Denver Nuggets, Colorado Avalanche, Colorado Rapids and UK Premier League football club Arsenal.