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Michael Dell, Dell, Inc.

2010 Tax Assessor’s Value: $18.5 million
Location: Austin, Texas
Beds/Baths: 8 bedrooms, 8 full bathrooms, 13 half bathrooms
Square feet: 33,000

Michael Dell is the CEO of his namesake company, Dell, Inc. The second-largest PC manufacturer in the world, it sits at number 41 on the Fortune 500 list, and according to The Austin American-Statesman, almost half of the revenue taken in by the city of Round Rock, Texas, comes from sales taxes generated by the company’s headquarters, which are located there.

Dell lives in a residence befitting a man who has brought so much revenue to his state. Built in 1997 at the height of the tech boom, his 33,000-square-foot Austin mansion is located on 20 acres of land, and in addition to its 8 bedrooms and 8 full bathrooms, it has 13 half bathrooms, indoor and outdoor swimming pools, and a conference room.

Photo: Bing Maps || Inset: Justin Sullivan | Getty Images