5. Richard LeFrak
Net Worth: $6.7 billion
Forbes 400 position: 73
Richard LeFrak has been born to a family that has been involved in real estate since 1883. Under his management, the LeFrak family company has been elevated to the new heights and he personally has become one of the largest landlords in the tristate area. One of his biggest achievements is the development of Newport, which he started with his father in 1986. Although he had a better head start than most of the other people on our list, LeFrak is deservedly considered one of the most successful real estate billionaires in America.