A.J. Diani Construction was founded in 1949 by Mr. A.J. Diani, a World War II Navy Construction Battalion Veteran. The son of Swiss immigrants, "AJ" spent his childhood on a dairy farm in the Santa Maria Valley of California's Central Coast, where he learned the value of hard work at a young age. The company grew through hard work and a commitment to project quality and client satisfaction.

Historically, A.J. Diani Construction offered a diverse and comprehensive line of general engineering services, general building construction and Enviromental Remediation. In 2005, the company reorganized to provide construction services through a family of corporations, thus the Diani Companies. In 2006 the Diani Companies sold its highway operation division to Granite Construction Company, a large national heavy civil contractor and construction material provider. Today, the Diani Companies offer management and craft teams who possess specialized skills to support design build projects, construction management, general building construction, environmental remediation and restoration, and landfill operations.
The employees of the Diani Companies are committed to Mr. Diani's legacy. The values, expertise, and commitment to client satisfaction have not changed. Diani Companies are dedicated to meeting our client's production schedule, budget, quality and safety goals. In the footsteps of Mr. A.J. Diani, the Diani Companies continue to value the importance of relationships with its clients, project partners, regulatory agencies and the community to ensure that every project is a success.
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