History of our firm:
Dees & Associates was founded in 2004 by Rebecca Dees as a sole proprietorship. The firm was incorporated in 2005, with the main office located in Santa Cruz, California. Rebecca Dees is the sole shareholder.
Rebecca (Becky) Dees graduated from San Jose State in 1993 with a BS in civil engineering. Becky graduated with honorable mention and in the top 10% of her class. During her time at San Jose State, she was vice-president, and later secretary, of the Civil Engineering Honor Society, Chi Epsilon, and a member of the engineering honor society Tau Beta Pi.
While attending college, Becky worked part-time as a laboratory and field technician at Haro Kasunich & Associates, a geotechnical and coastal engineering firm in Watsonville, California. She continued working for Haro Kasunich & Associates for fourteen years as a project manager, radiation safety officer, laboratory supervisor, and supervisor of the Caltrans construction testing program.
Statement of Qualifications
Dees & Associates, Inc. provides a full range of geotechnical engineering services, including:
Subsurface investigation by test borings, test pits and cone penetrometer
Field and laboratory testing of soil Engineering analysis, including: bearing capacities, settlements, slope stability, liquefaction, seismic site-specific response, lateral earth pressures, pile capacities, debris flows, lateral spreading, and pavements.
Development of geotechnical design criteria and recommendations for residential, commercial and public buildings; and for roadways, dams, bridges, land development, landslide and debris flow mitigation, groundwater control, pavements, and site drainage.
Construction observation and testing services for quality control, in-place density testing, foundations, drainage, erosion control, tie-backs, helix anchors, geosynthetics, and earthworks.
Forensic analysis of geotechnical failures.
Expert witness testimony.
Our team is dedicated to serving the needs of our clients in Santa Cruz County. Our objective is to provide our clients with the necessary means and assistance to develop appropriate and cost-effective solutions for their projects. Our engineering staff has over nineteen years of experience serving Santa Cruz County, and is dedicated to saving our clients time and expense while providing engineering excellence and professionialism.
Our clients have included:
County of Santa Cruz
City of Santa Cruz
Santa Cruz County Counseling Center
Cal Poly State
Swanton Ranch
Sash Mill
Norman Bei
Fitz Fresh
Easy Access Developers
VHM Christian School
Community Foundation
Hamilton Swift Land Use and Development
Stephen Graves & Associates
Paradise Park
Contact Info
Rebecca (Becky) Dees
501 Mission Street, Suite 8A Santa Cruz, CA 95060
Tel: 831-427-1770
Email: dees@dslextreme.com
Website: www.deesgeo.com
Recommended by SCCG member Peter Guiley












As a Building Designer, I have always recommended Becky Dees & Assoc. to work with my clients. She runs her business professionally and is respectful of the customer. Her reports are vey comprehensive, complete and easy to understand. She is happy to help you work thru any “challenges” on the project. I highly recommend using her services for your soils reports!
Dees and Associates has been, for many years, my first choice when I need Geotechnical Engineering services. I always know I can count on Becky for responsive service, intelligent and cost-effective foundation design recommendations, and good value for my clients.