San Martin, California · Est. 1977
Trinchero Construction delivers precision civil infrastructure for Santa Clara County's most demanding public works — earthwork, paving, wet utilities, and grading at every scale.
Who We Are
Founded in 1977 and led today by Donald G. Trinchero Jr., Trinchero Construction is a third-generation family business built on the same principle it started with: management shows up in the field, and every client gets the same meticulous attention to detail regardless of project size.
Serving Santa Clara, San Benito, Monterey, and Santa Cruz counties, we deliver precision civil infrastructure — from complex underground wet utilities to multi-million-dollar public works — using the latest GPS and laser-guided stakeless grading technology.
Core Capabilities
GPS/laser stakeless grading for mass earthmoving, dam construction, detention basins, and site preparation at any scale across California's South Bay.
High-volume municipal roadways, commercial parking lots, and public plazas engineered to exact compaction standards with long-term durability.
Sewer systems, water mains, French drains, and underground storm detention — surgical execution in confined urban corridors with zero compromise on safety.
Featured Project
Transforming a heavy-utility alley between 4th and 6th Streets in downtown Gilroy into a vibrant, pedestrian-first plaza — delivering comprehensive infrastructure and aesthetic upgrades under budget and on schedule.
Our History
What started as a single family's commitment to quality civil work has grown into the region's most trusted name in public infrastructure — without ever losing the hands-on leadership that defines us.
Donald G. Trinchero establishes the firm with a focus on civil infrastructure for the growing Santa Clara Valley.
Donald G. Trinchero Jr. assumes the presidency, expanding capabilities into mass earthwork and public utilities across four counties.
Early adoption of GPS and laser-guided stakeless grading technology — one of the first South Bay contractors to operate with precision telemetry.
Unanimous Gilroy City Council award for the Caltrans-funded downtown plaza revitalization. Third generation now active on-site alongside executive leadership.
Client Trust
Our workforce of knowledgeable people ensures we get the job done both timely and accurately. Management is hands-on and our repeat clientele receive the same attention to detail regardless of the size of their project.
Assured Aggregates goes above and beyond to service all of our trucking needs. They do everything they can to ensure that our orders are always accurate, complete and on time.
Trinchero Construction holds a Class A General Engineering license and a proven track record with Caltrans, the City of Gilroy, and South Bay municipal agencies. Let's build something that lasts.
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