Services We Offer
We provide the following valuable geotechnical engineering services for residential projects:
Geotechnical Investigations (Soil Reports)
Geotechnical Services During Construction
Percolation Testing
Corrosion Soil Screening
Analytical Soil Sampling and Testing
Expert Residential & Commercial SWPPP Services
All services come with a signed and stamped professional engineering report.

Geotechnical Soil Reports
We specialize in providing fast, accurate, and reliable soil reports tailored for residential developments, including:
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Single-Family Residences: Custom homes and new builds.
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Home Additions: Ensuring your new expansion integrates safely with your existing foundation.
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Accessory Dwelling Units (ADUs): Detached or attached backyard homes and cottage units.
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Retaining Walls & Slopes: Engineered solutions for hillside properties, grading, and erosion control.

Geotechnical Services During Construction
Our construction-phase geotechnical services for residential projects ensure strict adherence to design specifications through rigorous field verification and materials testing. Geotechnical engineers and certified technicians perform real-time evaluations of subgrade preparation, verify design bearing capacities within footing excavations, and conduct density testing on structural fill to confirm compliance with ASTM standards. By providing continuous observation during grading, foundation concrete placement, and retaining wall backfilling, we mitigate the risks of differential settlement and expansive soil distress, ensuring structural integrity and regulatory compliance.

Percolation Testing
A percolation test, commonly referred to as a perc test, assesses the soil's water absorption rate, which is essential for planning a septic drain field or infiltration basin. The outcomes of this test are crucial for the proper design of a septic system. Essentially, the test measures how quickly a specific volume of water seeps into the subsoil of a drilled hole with a known surface area.

Soil Analytical Sampling and Testing
Sample the soil for environmental contaminants including heavy metals, fuels, etc. Seal, label, and enter samples into a chain of custody for transportation to a state-certified laboratory for analysis. After the analysis is complete, we will provide a final technical report summarizing methods and results of the investigation.
Testimonials
"We needed a quick soil report for a backyard ADU (Accessory Dwelling Unit) project. Larger firms wouldn't even call me back for a job this small, but AK Geotech treated us like a priority. Adam showed up on time, did the soil boring, and delivered a clean foundation recommendation report ahead of schedule. Professional, fast, and highly knowledgeable."
David M.
San Jose, CA
"As a builder, I need engineering reports that pass the city review the first time. Working with this firm is a breath of fresh air. Because you work directly with the owner, there is no waiting around for corporate approval. The soil logic is always airtight and the reports are prompt,"
Matt S.
San Francisco, CA
"Most big engineering firms wouldn't even take a look at our small patio expansion. He treated our small project with total respect. He gave us practical soil advice and a quick turnaround so we could start building."
Teresa J.
Mill Valley, CA
"When our architect said we needed a liquefaction study for our home extension, we had no idea what that meant. Adam took the time to explain the earthquake risks in plain English and designed a reinforced foundation plan that keeps our family safe. Excellent, down-to-earth service."
Julie L.
Hayward, CA
OUR PROCESS
How We Work
Site Review
We review project details and site information.
Field Investigation
On-site exploration and soil sampling.
Laboratory Testing
Detailed testing and analysis.
Engineering Analysis
Data-driven engineering evaluations.
Final Report Delivery
Clear, accurate reports delivered on time.
Frequently asked questions
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