About Us

Koch & Koch, Inc. is a WMBE General Engineering and Electrical Construction company based in Penn Valley, California. We were founded in 1991, under the name Koch Construction. Originally focused in residential construction, our passion has continued to grow, leading us to commercial and public works projects spanning 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.

Our Values

Koch & Koch, Inc. is dedicated to providing quality construction.  We strive to practice long term relationships with our clients based on safety, quality, timely service and anticipation of their needs. To help fulfill this mission, we treat all employees fairly and involve them in the quality improvement process to ensure responsiveness and cost-effective work execution. Safety is something we bring to the front of every project, therefore every member of Koch & Koch, Inc. is safety trained and competent.


With over 28 years of construction experience and hundreds of projects under our belt, Koch & Koch, Inc. has the experience and equipment needed to complete your project with efficiency and quality.

Our Mission

Our mission is to maintain the highest level of integrity and professionalism in our relationships with our suppliers, subcontractors, professional associates and customers.

Green Initiative

We believe that embracing change brings bountiful results. In 2015, we began our green initiative; after installing over 100 solar panels, our shop and office are now powered exclusively by solar energy. All vehicles are compliant with current emissions standards. Koch & Koch, Inc. will continue to implement and lead in environmentally safe practices.

Notable Awards
  • Project of the Year 2013: Auditorium Drive Lift Station
  • Project of the Year 2013: N. Market Force Main Extension & Auditorium Drive Lift Station Replacement
  • Outstanding Energy Project 2016: Well N39 Rutland Pumping Plant
  • WMBE
  • SBE
  • DIR – Department of Industrial Relations
  • NCCA – Nevada County Contractors Association
  • BBB – Better Business Bureau

Our Services

Horizontal Directional drilling


Structural Concrete

Excavation & earthwork


Structural steel

Pipe Fusion