San Martin, CA · Est. 1977 · 3rd Generation
We Grade
South County
By Memory.
47 years of earthwork in Morgan Hill, Gilroy & San Martin. Every cut, every bore, every foot of underground utility we've placed is in the hands of crews who still live on these roads.
Project Record
Proof Built Into the Ground
Not a portfolio deck. Real projects — named, scoped, completed — across South County and the Central Coast.
Clean California Plaza public infrastructure: underground French drain system, pedestrian-grade concrete paving, site lighting, street furniture, ADA compliance throughout. Delivered on schedule for the City of Gilroy.
Commercial Public WorksStorm drain, sanitary sewer, domestic water, and dry utilities installed across Santa Clara, San Benito, Monterey, and Santa Cruz Counties. Every trench grade-cut with the same crews for four decades.
Wet & Dry UtilitiesFull machine-control fleet running Trimble GCS900. 48-hour CAD-to-grade model turnaround, ±0.1 ft tolerance. Eliminates staking rework and accelerates mass grading for large residential and commercial pads.
Technology-Led EarthworkScope Qualification
Tell Us Where You Are
We scope fast. Select your path — we'll match the right crew lead to your project type before we talk numbers.
Core Capabilities
End-to-End Site Development
- GPS machine-control earthwork
- Mass grading & pad prep
- Slope stabilization
- SWPPP erosion control
- Storm drain systems
- Sanitary sewer
- Domestic & recycled water
- Dry utilities / conduit / fiber
- Curb, gutter & sidewalk
- AC paving & base
- Public improvements
- Site demolition & clearing
Trimble GCS900 GPS Grade Control System
Stakeless machine control means no grade stakes to disturb, no survey crews blocking production, no rework. We model your CAD files and run them directly on the blade — 48 hours from file to first pass.
Trinchero has been our go-to grading contractor on South County projects for over a decade. Their crew knows this clay like nobody else — they read the ground before the plans do.
Ready to
Break Ground?
Submit your project details and we'll assign a senior crew lead to your scope review.
Response within 1 business day — no runaround, no junior estimator.