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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

Quality. Integrity. Service.

Three Businesses. One Promise.  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.

Our Companies

PrestonPipelines

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

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PrestonElectric

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

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DirtMarket

Leader in soils management and movement. Specialties: reviewing, sampling, testing, consultation and coordination of import/export, disposal and more.

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Our Companies

PrestonPipelines

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

Learn More

PrestonElectric

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

Learn More

DirtMarket

Leader in soils management and movement. Specialties: reviewing, sampling, testing, consultation and coordination of import/export, disposal and more.

Learn More

Our Clients

AWARDS

Preston Companies Recognized as 2025 Bay Area Best Places to Work for the Fifth Consecutive Year

We’re proud to share that Preston Companies has been named one of the Bay Area’s Best Places to Work for the fifth year in a row! This year, we ranked #4 in the 100–199 employee category, climbing two spots from 2024.

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NEWS

Empowering Progress: Preston Attends GWIC 2025

At Preston, we believe that a strong, inclusive industry is built on the contributions of diverse voices and perspectives. That’s why we were proud to have six of our own attend this year’s Groundbreaking Women in Construction (GWIC) conference in San Diego, California, a powerful event dedicated to advancing women in the construction industry.

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PEOPLE

Preston Pipelines Strengthens Estimating Leadership with Key Promotions

Preston Pipelines is proud to announce two key leadership promotions within its estimating department, reinforcing the company’s commitment to excellence in project planning and execution.

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PEOPLE

Women in Construction Week 2025 | Angela Gonzalez

Preston Companies is participating in Women in Construction (WIC) Week by showcasing some of the powerhouse women at Preston.

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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!

Industry Expertise

We go above-ground, below-ground and beyond to meet our customers’ needs. We’ve earned a reputation for excellence and service in the following industry sectors:

Working Here

A Modern Family Approach. Collaboration, communication and transparency define every Preston team.

Working Here

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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