Koch & Koch, Inc. is a WMBE General Engineering and Electrical Construction company based in Grass Valley, California. We were founded in 1991 under the name Koch Construction. Originally focused on residential construction, our passion has continued to grow, leading us to commercial and public works projects throughout California. From small jobs to multimillion-dollar projects, we establish relationships with our clients and provide a one-stop shop experience.

We work primarily on State—and federally-funded public works projects, including water and sewer pipelines and systems, pumping stations, site work, underground excavation, and metal buildings.

Koch & Koch, Inc. continues to operate as a family-owned and operated company.

Koch & Koch, Inc. is a Women and Minority Business Enterprise.

Koch & Koch, Inc.

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Koch & Koch, Inc.

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