(707) 575-5608 dave@kochconstruction.net

About Us

Koch Construction Company » About Us

Founded in 1935, Building Trust Ever Since

As a second-generation contractor, Dave Köch has worked on projects of almost all shapes and sizes. His father founded his original business in 1935, and the family has maintained deep roots in construction ever since.

Building a solid network of clients, vendors, and subcontractors, Dave proudly carried on his father’s legacy of quality construction and fair pricing. For over 40 years, he’s steered Köch Construction Company to be a reliable leader among General Contractors in the Sonoma, Napa, and Marin county area



  • President of Köch Construction Company, Inc. – 1983 to present
  • Developer of Various Commercial, Residential and P.U.D. Projects
  • V. P./Secretary for Callahan & Köch Construction Associates, Inc., 1971 to 1983

Building a Legacy Since 1935

When you choose Köch Construction, you partner with experienced professionals dedicated to turning your construction dreams into reality. Our reputation is built on trust, quality, integrity, and reliability. Discover the Köch difference—contact us today.

Where We Build

Köch Construction serves wineries, retail outlets, manufacturers, and more in these California counties:

  • Sonoma County
  • Napa County
  • Marin County

Including the beautiful cities of Santa Rosa, San Rafael, Napa, and Novato.

Not sure if we can help you? Browse our Services or get in touch for more information.


Our Specialties

Köch Construction’s expertise extends to these areas:


With affiliations with industry associations and community organizations, we remain deeply connected to our local community. We are proud of our partnerships like,

  • Past President – North Coast Builders Exchange (NCBE) July 1998 – July 1999
  • Board of Directors – NCBE 10 years
  • Past Regional Director of Building Industry Association (BIA)
  • Member – National Federation of Independent Business
  • Member – Santa Rosa, Windsor Chamber of Commerce
  • Member – Associated Builders and Contractors (A.B.C.)
  • Windsor Rotary
  • Windsor Boys and Girls Club (committee chair)
  • Boys and Girls Club of Central Sonoma County (board of directors)

Our Latest Work

Experience our latest achievements in construction and renovation projects. Browse through our portfolio, which showcases quality craftsmanship and innovative solutions for residential and commercial spaces.

Merry Edwards Winery
Sonoma Design Apparel
Mini Storage
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