No. 3: Bo Menkiti

Age: 30*

Location: Washington, D.C.

2006 revenue: $640,000

Employees: 10

Year founded: 2004

A Harvard MBA, Menkiti sold his home in the capital's Columbia Heights neighborhood to launch an urban-real-estate development, brokerage and sales firm aimed at first-time buyers in the underserved middle market. In less than three years, his team has developed 33,000 square feet of residential and commercial property and brokered more than $60 million worth of real estate in the region. What's next for Menkiti? Developing a 30-unit affordable-housing building from the ground up.

*Was 29 at time of selection

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Source: Inc.com

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