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Based in Northern Virginia, KSI is a leading developer of award-winning, mixed-use residential and commercial properties across the Washington Metropolitan area. In 2006, KSI was named one of the area's largest private companies by the Washington Business Journal and is one of the nation's largest Top 20 multifamily developers. KSI has developed more than five million square feet of commercial space and more than 50,000 homes. Current projects include urban and transit-oriented developments, multifamily housing, commercial and mixed-use developments and golf courses. Robert C. Kettler, a third-generation builder and developer, founded KSI in 1977.