4. Stephen Ross
Net Worth: $7.4 billion
Forbes 400 position: 58
The owner of Miami Dolphins that ranked 4th on the list of most successful real estate billionaires in America started his real estate career by working as a tax lawyer and designing affordable housing deals for the wealthy looking to benefit from tax exemptions offered by the federal government. Later on, he started investing on his own. While affordable housing remains a big part of his company’s portfolio, he has since expanded his business and got involved with more upscale projects. In 2008 he bought Miami Dolphins but has since failed to secure taxpayer funds to build a new stadium, which has led to rumors that he is planning to relocate the team.