Preston Companies, based in Milpitas, CA, has been a leader in underground engineering since 1970. With a focus on excellence, they offer a wide range of services including storm drains, water, sewer, fire protection, natural gas, excavations, and more. Their subsidiary, Preston Pipelines, specializes in premium underground electrical systems that are crucial for keeping communities running smoothly.

They provide services for public utilities, telecom, joint trenching, security, and more. At Preston Companies, quality, integrity, and service are top priorities. With an experienced leadership team and a commitment to hands-on partnership, they bring extensive expertise to complex projects.

Their services include excavating and installing underground wet and dry utilities, soils testing and management, and fill site management. Preston Pipelines, founded in 1970, has built a reputation as an industry-leading general engineering utility contractor. They have a wide range of capabilities and specialize in underground utility installation for both simple and complex industrial projects.

With their experienced personnel and cutting-edge equipment, they ensure precise and accurate installations every time. From storm drains and sanitary sewers to water and wastewater plants, Preston Companies has the expertise and resources to tackle any underground engineering project