Engineers in Lancaster, CA

AESI provides an in-depth experience of the region that outside companies simply don't have. From an understanding of local permitting processes and technical regulations to founded working relationships with decision makers, AESI achieves project goals efficiently and effectively. More than a highly

We're engineers with a practical, no-nonsense approach for your project. We thrive on producing solutions for our clients that satisfy your needs and meet the most demanding standards. Individuals at all stages of our organization connect with customers to supply services that fulfill your requirements.

Penfield & Smith has been delivering exceptional services to both private and public customers throughout the Central Coast and Southern California for over 60 years. The company's roots go back to 1946 when Penfield & Smith was set up in Santa Barbara. As the demand for our services in other areas grew,