1977
1500+
30+
Year Established
Projects Completed
Projects Per Year
SERVICES
Underground Utility & Infrastructure
We provide underground utility services for both residential and commercial projects across Northern California, including on site and offsite storm drain, sewer, fire, and water lines even into streets and roadways. We are OQ qualified with PG&E to trench and backfill for gas and electrical lines.
Earthwork, Grading & Offhaul
Thiessen specializes in grading, offhaul and other earthwork for residential and commercial developments. Our services also include erosion control measures and landslide repair, delivering solutions for hillside and drainage-challenged sites throughout the East Bay.
Foundations, Retaining Walls & Structural Concrete
With over 30 years of experience, we are experts in structural concrete, including foundation construction and repair, and retaining walls. We’re highly experienced in hillside construction, including deep piers, complex shoring, stepped footings, and reinforced concrete solutions tailored to challenging terrain.
ABOUT
Thiessen Construction has been a trusted name in Northern California construction since 1977. Originally operating under license #361077, we’ve completed over 1,500 projects across the region. Today, we continue that legacy under license #1083908, bringing the same reliability, expertise, and fairness we’ve built our reputation on for more than 30 years.
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Areas of Expertise:
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Commercial site development
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Custom homes
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Large-scale foundations & deep pier systems
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Retaining walls & structural concrete
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Below-grade concrete, including basements
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Waterproofing & drainage systems
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Storm drain, sewer, and water line installation
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Joint trench systems in public roadways
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Underground utility work (PG&E OQ Certified: 02-14, 02-15, 05-07)
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Erosion control & hillside stabilization
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Grading, demolition, and offhaul
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Landslide repair & slope restoration
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Public agency coordination & compliance
CLIENTS
CONTACT
Inquiries
For any inquiries, questions or commendations, please call: (925) 485-7824 or fill out the following form:
Contact Us
Office
Employment
To apply for a job with Thiessen Construction, please e-mail your resume, or drop it off in the office mailbox.
Get a quote: (925) 485-7824