Quality. Integrity. Service.
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.
PrestonElectric
Premium underground electrical systems that keep communities running. Specialties: public utilities, telecom, joint trenching, security and more.
DirtMarket
Leader in soils management and movement. Specialties: reviewing, sampling, testing, consultation and coordination of import/export, disposal and more.
Our Companies
PrestonPipelines
Excellence in underground engineering since 1970. Specialties: storm drains, water, sewer, fire protection, natural gas, excavations and more.
PrestonElectric
Premium underground electrical systems that keep communities running. Specialties: public utilities, telecom, joint trenching, security and more.
DirtMarket
Leader in soils management and movement. Specialties: reviewing, sampling, testing, consultation and coordination of import/export, disposal and more.
Our Clients
AWARDS
Preston Pipelines Recognized for Safety Excellence in UCON’s 2024 R.E.A.L. Safety Awards
We’re proud to share that Preston Pipelines Infrastructure has been recognized with two 2024 R.E.A.L. Safety Awards from United Contractors.
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.
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.
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.
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.
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.