30 Years of No. 1 Companies

Timothy Rice
3 of 29

1983: Sigal Construction
Washington, D.C.

1982 Revenue: $47.5 million
Three-Year Growth: 20,214%

Sigal was founded in 1977 by Gerald Sigal, a civil engineer who received his degree from New York University. Initially, the company focused on renovations and interiors, but in the early 1980’s expanded its scope to base building in the Washington, D.C. area. Gerald Sigal told Inc. magazine in 2006 that though he has received plenty of offers to sell the company, he plans to keep it private. “This is what I've always wanted it to be: a family business," he said. "I couldn't be happier."