Trump began his career at his father's real estate company, Elizabeth Trump and Son. the company focused on middle-class rental housing in Brooklyn, Queens, and Staten Island. One of Trump's first projects, while he was still in college, was the revitalization of the foreclosed Swifton Village apartment complex in Cincinnati, Ohio. His father had purchased it for $5.7 million in 1962. Trump became closely involved in the project. With a $500,000 investment, he turned the 1200-unit complex with a 66 percent vacancy rate to 100 percent occupancy within two years. In 1972, the Trump Organization sold Swifton Village for $6.75 million. Trump has developed many real estate projects. They include Trump International Hotel and Tower in Honolulu, Trump International Hotel and Tower in Chicago, Trump International Hotel and Tower in Toronto, and Trump Tower in Tampa. In Fort Lauderdale, Florida, one Trump construction project was put on hold in favor of another (Trump International Hotel and Tower in Fort Lauderdale). Meanwhile, Trump Towers in Atlanta is being developed in a housing market having the nation's second-highest inventory of unsold homes. In its October 7, 2007 Forbes 400 issue, "Acreage Aces", Forbes valued Trump's wealth at $3.0 billion. Since 2011, his net worth has been estimated from $2.9 billion to $7 billion.