Trinchero GPS-guided motor grader on a South County earthworks site

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.

0+ Years in South County
3rd Generation Family-Owned
0 Counties Served
GPS Stakeless Grading Fleet

Project Record

Proof Built Into the Ground

Not a portfolio deck. Real projects — named, scoped, completed — across South County and the Central Coast.

$2.97M Gourmet Alley · Downtown Gilroy

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 Works
100s of Miles Underground Utilities · 4 Counties

Storm 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 Utilities
GPS Stakeless Fleet · Trimble GCS900

Full 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 Earthwork

Scope 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

01
Earthwork & Grading
Mass grading, cut and fill, slope shaping, and finish grade for residential, commercial, and public projects across South County.
  • GPS machine-control earthwork
  • Mass grading & pad prep
  • Slope stabilization
  • SWPPP erosion control
02
Underground Utilities
Storm drain, sanitary sewer, domestic water, recycled water, and dry utilities from concept through final trench compaction.
  • Storm drain systems
  • Sanitary sewer
  • Domestic & recycled water
  • Dry utilities / conduit / fiber
03
Site Development
Full site package from rough grade through final paving, curb, gutter, and public improvement construction.
  • Curb, gutter & sidewalk
  • AC paving & base
  • Public improvements
  • Site demolition & clearing
Technology Advantage

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.

±0.1 ft
Grade Tolerance
48 hr
CAD to Grade Model
GPS
Stakeless Operation
Real-Time
Cut/Fill Reporting
"

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.

LK
Larry Kent
Project Manager
South Valley Development

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.

SWPPP Certified ● OSHA Compliant ● Fully Insured ● Licensed CA C-12 / A Contractor ● EMR ● Gold Shovel Standard

Capabilities · Est. 1977 · Licensed CA C-12 / A

Full-scope civil.
One accountable crew.

From first cut to final surface — complete heavy civil packages across Santa Clara, San Benito, Monterey, and Santa Cruz counties. One contract, one crew lead, one standard.

Mass GradingEarthwork & Site Development

GPS-guided stakeless grading, mass excavation, and building pads held to ±0.1 ft tolerance. Cut and fill balanced in real time, verified against the CAD model.

GPS Stakeless Fleet
UndergroundUtilities & Drainage

Wet and dry utility systems, storm drain, and engineered French drain installations — placed by crews who have run underground lines through this ground for four decades.

Storm & Drainage
PavingRoads & Surface Treatment

Roadway paving and surface treatment engineered for South County soil movement — from rural connector roads to finished commercial frontage.

Roadwork
StreetscapePublic-Realm Concrete

Pedestrian-grade concrete, plazas, site lighting coordination, and street furniture — ADA compliance built in from the first form, not patched in at closeout.

ADA Throughout
Public WorksAgency-Ready Delivery

SWPPP-certified, OSHA-compliant delivery for cities, counties, and public agencies — documentation, compliance, and schedule discipline included by default.

Municipal
PrecisionField Technology Program

CAD to grade model in 48 hours. Real-time cut/fill reporting from the cab. Zero physical stakes on site — fewer delays, tighter tolerances, cleaner handoffs.

Field Data
4 Counties
Santa Clara · San Benito · Monterey · Santa Cruz
Crews That Live Here
Morgan Hill · Gilroy · San Martin

Project Record · City of Gilroy · Commercial Public Works

Gourmet Alley.
$2.97M of downtown, rebuilt.

Clean California Plaza public infrastructure in the heart of downtown Gilroy — scoped, built, and delivered on schedule for the City.

$2.97MContract Value
On ScheduleDelivered as Committed
ADACompliant Throughout
Public WorksCity of Gilroy
Underground French Drain System
Engineered subsurface drainage beneath the full plaza footprint
Pedestrian-Grade Concrete Paving
Finished public surfaces built for daily downtown traffic
Site Lighting & Street Furniture
Full public-realm fit-out coordinated with city standards
ADA Compliance Throughout
Accessibility engineered into every surface and transition

How It Was Delivered

  1. 01
    Site Preparation & Protection
    Downtown work zone established with pedestrian and merchant access maintained through construction.
  2. 02
    Underground Drainage
    French drain system trenched and placed beneath the plaza — the invisible work that keeps the visible work standing.
  3. 03
    Concrete & Paving
    Pedestrian-grade surfaces formed, poured, and finished to city specification, ADA transitions built in.
  4. 04
    Lighting, Furniture & Closeout
    Site lighting and street furniture installed; project documentation delivered and accepted on schedule.

Contact / Intake · Response Within 1 Business Day

Ready to
Break Ground?

Tell us what you're building. A senior crew lead — not a junior estimator — reviews every scope request.

408-375-6444
Direct Line · Ask for Steve
San Martin, CA
Serving Santa Clara · San Benito · Monterey · Santa Cruz
1 Business Day
Scope Review Response — No Runaround

SWPPP Certified · OSHA Compliant · Fully Insured · Licensed CA C-12 / A Contractor