About Us

Since 1927, we have provided land surveying and engineering services that have set the stage for countless California roadways, structures, communities, and flood control and wastewater systems.

Through thousands of completed projects, we've established a consistent record of success evidenced by a customer base of 80 percent repeat clients. Some of our clients have been with us for months, others for more than 40 years. In surveys, we're told that they stay with us because they can count on our senior managers to stay actively involved in their projects and our attention to detail makes projects run smoothly.

The nearly 200 staff members of Mark Thomas & Company, Inc. serve California from the firm's San Jose headquarters and through branch offices in Alameda, Contra Costa, Fresno, Monterey, Orange, Sacramento, San Mateo and Santa Clara counties.