Projects

Our Work

Siegfried is one of Northern California’s largest multidisciplinary design and engineering firms, offering civil, structural, and geotechnical engineering, landscape architecture, surveying, and partnering and public outreach services. With offices in Stockton, Sacramento, Modesto, and San Jose, we’re proud to be a trusted partner for clients, employees, and communities alike.

Our integrated teams work closely across disciplines, streamlining costs and maximizing function—whether we’re enhancing regional healthcare facilities, designing innovative educational campuses, improving stormwater and pipeline infrastructure, supporting industrial and manufacturing developments, or modernizing infrastructure and transportation networks.

From designing athletic facilities and planning thoughtful residential communities to shaping engaging retail and hospitality environments, we approach every project with creativity and technical expertise—always seeing the whole picture, not just the individual parts.