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Excellence in underground engineering since 1970. Specialties: storm drains, water, sewer, fire protection, natural gas, excavations and more.

Explore Company

Premium underground electrical systems that keep communities running. Specialties: public utilities, telecom, joint trenching, security and more.

Explore Company

Excellence in underground engineering since 1970. Specialties: storm drains, water, sewer, fire protection, natural gas, excavations and more.

Explore Company

Quality. Integrity. Service.

The Preston Companies bring extensive expertise and hands-on partnership to complex projects. Our services include excavating and installing underground wet and dry utilities, soils testing and management, and fill site management.

About Preston

Infrastructure and Public Works

Building California’s Infrastructure For 50+ Years

We have worked on municipal infrastructure projects of every size, and bring extensive capabilities and proven success. Our schedule sequencing process enables us to predict possible issues ahead of time, and we complete all work with minimal impact to surfaces. Our long standing relationships with engineers and inspectors in multiple jurisdictions allow us to find just the right resources required. Our skills consist of removal, replacement, upgrading, demolition, directional drilling, open-cut, trenchless boring, and traffic and pedestrian safety.

How Can We Help?

We take the time to learn about your specific needs and pain points to develop solutions that will have the greatest impact. Select a role below and see how Preston can support your needs!

Let’s Connect

Whether you have an inquiry about our services, pricing, needing engineering expertise, or anything else, our team is ready to answer all of your questions.

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How We Help You

We take the time to learn about your specific needs and pain points to develop solutions that will have the greatest impact. Select a role below and see how Preston can support your needs!

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