Mark Thomas

Civil Engineers

Mark Thomas provides sound and innovative engineering solutions and responsive customer service for public works projects. Our civil engineers have delivered hundreds of roadway, highway, drainage, utility, and infrastructure projects for California agencies.

Structures Engineers

Mark Thomas structural engineers deliver top-tier transportation, flood control, and water/wastewater structure projects. This includes the design of new bridges, bridge replacements and rehabilitations, retaining walls, soundwalls, flood walls, water reservoirs, pump station housings, and other structures.

Landscape Architects

Mark Thomas provides fully integrated and comprehensive landscape architecture services. Our projects are site-responsive and community-focused, ensuring that the characteristics of the natural and built environments blend together holistically to reinforce community identity and enhance the user experience.

Planners and Urban Designers

At Mark Thomas, we prepare master plans that range in scale from local facilities and parks to regional transportation networks. We bring a real world design perspective to each master plan to identify realistic and implementable strategies.


Our land surveying division is one of California’s most well respected surveying service providers. We provide large and small landnet surveys, ALTA/ACSM surveys, project control surveys, topographic design surveys, right of way engineering and survey support services, utility mapping, and construction staking. Our survey staff can provide legal descriptions, appraisal mapping, Resolution of Necessity drawings and Right of Way Record mapping.


Our projects are successful when teams work together to develop creative solutions to challenges – integral to the Mark Thomas culture is an environment where teams can flourish and do their best work. Our core values include collaboration, creativity, flexibility, respect, and fairness; we apply these to our work every day. At Mark Thomas, we support and encourage each other, because when one person grows, we all grow.