Geotechnical engineer in Berkeley, California
Berkeley builds right up against the Hayward Fault and onto steep, historically landslide-prone hills — so slope stability and seismic design drive most projects above campus, while soft ground governs toward the bay.
The ground in Berkeley
The Berkeley Hills are underlain by Franciscan bedrock and older volcanic and sedimentary units, mantled by colluvium that can move on steep slopes. Below the hills, expansive clays are widespread, and the ground softens toward West Berkeley and Aquatic Park where bay mud and fill appear. Expansive soil and hillside stability are the recurring themes.
Faults & seismic setting
The Hayward Fault runs along the base of the Berkeley Hills and straight through the UC Berkeley campus, placing much of east Berkeley inside an Alquist-Priolo Earthquake Fault Zone. Fault setbacks and strong ground-shaking design are central to hillside work here.
What we do in Berkeley
- Hillside additions and new homes above campus
- Slope stabilization and landslide repair in the Berkeley Hills
- Expansive-soil foundation and slab design
- Retaining walls for stepped hillside lots
- Fault-zone evaluations within the Alquist-Priolo zone
Areas we serve in Berkeley
- Berkeley Hills
- Claremont
- Elmwood
- Northbrae
- West Berkeley
- Thousand Oaks
Permitting & review
The City of Berkeley requires geotechnical review for hillside and fault-zone properties. We produce investigations that satisfy Berkeley's building and safety requirements, including Alquist-Priolo fault studies where the property is affected.
Services for Berkeley projects
- Slope StabilityYou need slope stability analysis for any project on or below a hillside, for new grading and retaining walls, and after signs of movement — cracked hardscape, tilting walls, or scarps. Most hillside jurisdictions require it as part of the geotechnical report.
- Seismic HazardSeismic hazard assessment is required for essentially all new construction in the Bay Area and for many additions and retrofits. It is especially critical on bay mud, artificial fill, and near mapped fault zones, where liquefaction and lateral spread drive the design.
- Foundation EngineeringFoundation engineering follows the site investigation and precedes structural design. You need it for new construction, vertical additions that increase loads, and any project on soft, expansive, or filled ground where a generic footing detail would be a liability.
- Site InvestigationYou need a site investigation before design on any structure that transfers load to the ground — new buildings, additions, retaining walls, and hillside projects. Most Bay Area jurisdictions require a geotechnical report for permit submittal, and lenders increasingly ask for one before closing.
Geotechnical engineering in Berkeley — common questions
- Is my Berkeley property in the Alquist-Priolo fault zone?
- Much of east Berkeley near the hills is. If it is, the City may require a fault-rupture study before permitting. We locate the fault trace relative to your project and, where needed, recommend a setback so you can build safely.
- Do Berkeley Hills homes need slope-stability analysis?
- Typically yes for additions, new construction, or grading on the slope. We evaluate the hillside's stability, groundwater, and any landslide history, then recommend foundations and drainage that keep the site stable.
- How do you handle Berkeley's expansive clay soils?
- We test the soil's expansion potential and design for it — often with deepened footings, moisture control, or a structural slab — so seasonal swelling and shrinking doesn't crack foundations or flatwork.
Nearby service areas
Building in Berkeley? Let's talk about your site.
Send us the location and what you have planned. You'll get a straight answer on what the ground can carry — and a fixed-fee proposal within 24 hours.