Psomas Overview

An Industry Leader

Continually ranked by ENR as one of the top engineering firms in the nation, Psomas serves public and private sector clients in the transportation, water, site development, and energy markets.

Solutions To Ensure Your Success

Our unique approach begins with a deep understanding of our client’s business. We anticipate the opportunities and challenges ahead and develop solutions to ensure your project’s success.

Our History


In 1946 Tim’s father, George Psomas, started a small surveying firm in Southern California to meet the critical need for housing and public works improvement projects. Today, through geographic expansion, diversifications and acquisitions, the small surveying firm started by George Psomas has more than a dozen offices across the Western United States and is ranked one of the top engineering firms in the nation.

Innovation, Creativity, Sustainability

Our award-winning projects are produced through innovation, creativity and technical expertise. We are proud to be in professions that help build sustainable communities and improve the quality of life in our neighborhoods. This is so ingrained in the Psomas culture that our motto is “balancing the natural and built environment.”

Teamwork and Collaboration

We work as a team, through collaboration and brainstorming sessions, toward the common goal of providing the best project for our clients. Our culture of open communication and mentorship not only produces better projects, it also translates into a great working environment.

Next Section: Sustainability