KSN serves Stockton, West Sacramento, and the greater Central Valley

Civil Engineers and Land Surveyors since 1956

Kjeldsen, Sinnock, and Neudeck, Inc. is a full service civil engineering and land surveying company with offices in Stockton and West Sacramento, specializing in the planning, design, surveying and mapping of public works infrastructure, transportation, water resources, commercial, industrial, and institutional projects. 

As one of the premier civil engineering firms classified as a Small Business Enterprise (SBE) in the Central Valley, KSN provides comprehensive professional services to public and private clients throughout California's Central Valley. Our staff of highly qualified professionals includes an exceptionally high percentage of Registered Civil Engineers and licensed Land Surveyors. KSN has been recognized for our unique and innovative work on a broad spectrum of award-winning projects. We are well respected within the engineering profession and with public agencies for the high quality of our work product and reliability in delivering large and complex projects on schedule and within budget.

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