Phillippi Engineering, Inc. (PEI) is an innovative, cutting-edge civil engineering and land surveying company in Vacaville, Calif. One of the largest firms in Solano County, we use state-of-the-art equipment and are committed to serving our clients with honesty and integrity.
Since 1983, PEI has provided premier engineering services to a diverse range of clients across Northern California. Our engineers have extensive experience with land development and public works projects. That experience, combined with integrity and creative problem solving, is how we've been able to produce exciting projects year after year that enhance our community.