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Thank you for visiting us. We encourage you to visit this site regularly as we will be constantly updating the news section. The purpose of this website is to provide an accurate background and educational resource for the community regarding the San Rafael Rock Quarry.

The San Rafael Rock Quarry has been operating for over 100 years. We are a state-designated resource and the only waterfront operation in Northern California that can transport materials via barge to specific project destinations. The Dutra Group purchased the Quarry in 1986, and since then we have contributed materials to countless local public works and private development projects. Located in the county of Marin just outside the city limits of San Rafael, the Quarry supplies materials and resources to an extensive list of clients and projects throughout the region. Building materials from the San Rafael Rock Quarry have a role in approximately 90 percent of Marin County projects.