Eureka   (707) 443-5054   |   Ukiah   (707) 462-0222   |   Santa Rosa   (707) 525-1222


Engineers, Designers, Planners, Geologists, Geotechnical Engineers, Surveyors, Environmental Scientists, Special Inspectors, and More

Eel River view

LACO provides professional consulting services for development, infrastructure, and geo-environmental projects to advance the quality of life for generations to come. We have offices in Humboldt County, Mendocino County, and Sonoma County, and have served Northern California since 1954. Your goals and concerns are our priority, and we have the resources, expertise, and perspective to help you succeed. 


We offer the following services:



"Our office appreciates LACO's dedication to working with our various stakeholders to develop scientifically defensible best management practices and supportive recommendations. Based on their technical expertise and professionalism, we recommend LACO for your projects."Andy Casarez, Agriculture and Vineyard Conservation Coordinator, Sonoma County Department of Agriculture