Graniterock is a California-based construction materials and contracting company. We are a family business, owned and operated by the same family since our founding in 1900.

With its flagship quarry in Aromas, California, Graniterock is one of the Monterey and San Francisco Bay Area’s premier suppliers of high-quality aggregate, sand, concrete, recycled aggregate, hot mix asphalt and other building materials.

The Company’s Construction Division is a leader in heavy civil infrastructure projects, known for executing high-quality paving, excavating, grading, cold-in-place recycling, concrete finish work and underground utility services. We proudly hold California Contractor’s License Number 22.

The Company operates its own Transportation Division, including rail services, to deliver products to job sites across the state.