The Preston Process


Streamlined From Bid to Completion

The Preston Pipelines TEAM is Talented, Energetic, Ambitious, and Motivated, striving to efficiently and effectively meet your underground construction needs.

We have one of the most experienced teams of estimators in the underground construction industry. The estimating team serves as the catalyst for acquiring work. From concept to final installation, every job is thoroughly analyzed for design, constructability, and materials costs. Once an estimate is completed and prepared for submittal, the bid is reviewed for cost-effectiveness by the Preston Pipelines estimating team.

After a job is awarded to Preston Pipelines, the operations department swings into action. With highly competent project managers and a team of project engineers supported by qualified administrative assistants, the work is studied and planned to completion. The job is assigned to one of the project managers who, together with the foreman in charge of the actual construction, carefully reviews all the job details. Area superintendents continually monitor projects as well as employee training and adherence to Preston Pipelines’ core values of safety, quality, and customer satisfaction.

During completion of the underground work, the accounting department works with the Preston Pipelines project manager to fit the extra work orders and quotes into the project and progressively bill a customer. Once the project is complete, the accounting department ensures that payments are made as agreed.

Preston Pipelines crews always use first-line, state-of-the-art equipment employing the latest technology for all phases of an underground installation. With experienced foremen, pipe layers, laborers, and operators, projects get completed precisely as bid.

Preston Pipelines also has a well-equipped, state-of-the-art maintenance facility to keep equipment breakdowns to a minimum. Once a job begins, our equipment is maintained on the job site to ensure minimal down time. When larger repairs are needed, Preston’s six-bay shop is equipped with every part needed to complete the repair and get the excavator, loader, or other equipment back on the job.



Corporate Office

133 Bothelo Avenue
Milpitas, CA 95035
(408) 262-1418
(408) 262-1870 fax

Sacramento Office

3780 Commerce Drive
West Sacramento, CA 95691
(916) 386-1500
(916) 386-7531 fax

Central Valley Office

12687 South Manthey Road
Lathrop, CA 95330
(408) 262-1418
(408) 262-1870 fax