About Us

Andreasen Engineering, Inc. is a well-established professional engineering firm that was founded over 72 years ago in 1952. Based in Upland, California, we are dedicated to providing engineering excellence and maintaining a client-focused approach. We are actively involved in serving clients not only in the local community but also throughout the Inland Empire in Southern California. As a member of the American Council of Engineering Companies (ACEC) and a certified Small Business with the State of California, Andreasen Engineering, Inc. upholds professional standards and is recognized as a small business entity. With a focus on innovation and precision, Andreasen Engineering, Inc. offers a wide range of engineering solutions to meet the needs of various clients in various fields, including Civil, Mechanical, Electrical, Plumbing, Fire-Fighting, and T-24 Net Zero Consulting. Our main goal is to view each client as a partner and work closely with all stakeholders to ensure successful project outcomes. We have an impressive list of notable projects, including Reeves Center, Mayflower Center, Pepper Tree Square, Norms Restaurant, Fairplex Sheraton Hotel, Fairplex Child Development Center, Weigand Veterinary Clinic, Claremont Ford, Claremont Mazda, Casa Colina Rehabilitation Hospital, Inland Valley Human Society, and Upland Village Center. At Andreasen Engineering, Inc., we aim to openly share project information with each stakeholder to ensure that no detail is overlooked. We may consider showcasing specific client testimonials or case studies on our website to highlight our successful partnerships. We follow industry best practices and high standards to execute each project flawlessly, managing the entire project life cycle from start to finish. Our commitment to excellence and project management is evident in our work, and we may consider highlighting our project management process or showcasing before-and-after project transformations on our website to further demonstrate our capabilities.