It takes a professional management team, supported by dedicated and experienced field personnel to earn the trust that equates to over 150 public and private projects completed each year. Customer service, quality performance, and integrity have established our reputation as a leading Underground Contractor in the San Francisco Bay Area. Preston Pipelines has completed a variety of jobs ranging from housing tracts to golf courses and recreational facilities to commercial campuses to industrial complexes and public and private infrastructures. Preston Pipelines has the capability to complete the simplest installation to the most complex industrial installation with state of the art equipment and the most competent work force in the industry.