Business Details
16 Years
experience
Your Trusted Construction Partner in Upland, CA
Founded in 2010 by Garrett John Gentry, our company was established to revolutionize the construction industry by prioritizing employee welfare and delivering turnkey solutions. With roots in a family-run construction business, we identified a gap in streamlined project execution and created a single-source provider for grading, concrete, and pipeline contracting. Our commitment to safety, customer service, and competitive pricing has driven sustained growth to $35 million annually while maintaining 100% customer retention since inception. We operate with over 300 equipment units across California and Arizona, serving diverse environments with precision. Our leadership team, including industry veterans like Vice President Bryan Copping and Project Manager Jim Zheng, ensures operational excellence.Safety remains our core value, enforced through OSHA 30-certified foremen and a dedicated safety department overseeing all projects. We treat employees as family, fostering loyalty that translates to exceptional service for clients. Community involvement in Upland reflects our belief in giving back while supporting 135 families through stable employment. This philosophy of 'Blessed to be a blessing' guides our approach to every project, ensuring employees return home safely each day while delivering results that exceed expectations.
Services
Grading
Concrete Paving
Pipeline Installation
Asphalt Paving
Structural Concrete
Underground Storm Sewer
Heavy Civil Work
Public Works
Curb & Gutter
Mass Excavation
Details
- Year established: 2010
Highlights and features
- We maintain 100% customer retention since founding in 2010.
- Our fleet includes over 300 equipment units for any project scale.
- Safety-first approach with OSHA 30-certified foremen on all sites.
- Employee-centric culture ensures dedicated, experienced project teams.
- Turnkey solutions eliminate need for multiple subcontractors.
Services
Grading
Our grading services include mass excavation, rough, fine, and finish grading to prepare sites for construction. Utilizing advanced equipment and experienced operators, we ensure precise elevation adjustments and proper drainage solutions. Projects across California and Arizona demonstrate our capability to handle terrains of all complexities while maintaining strict safety standards.
Concrete Paving
We specialize in structural concrete and heavy-duty paving solutions for commercial and infrastructure projects. Our services include curbs, gutters, and color paving applications that combine durability with aesthetic appeal. With in-house expertise and quality materials, we deliver long-lasting surfaces for high-traffic areas and specialized requirements.
Pipeline Installation
Our pipeline division handles underground storm sewer, water lines, and heavy civil work with precision engineering. From initial planning to final installation, we ensure compliance with municipal codes and environmental regulations. Our team manages projects of all scales, including public works infrastructure and industrial site utilities.
Asphalt Paving
We provide full asphalt paving solutions for roads, parking lots, and industrial sites. Our process includes base preparation, material delivery, and compaction to meet exact specifications. With rapid turnaround capabilities and attention to detail, we create smooth, durable surfaces that enhance safety and functionality.
Heavy Civil Work
Our heavy civil construction services encompass channels, canals, and public works projects requiring specialized equipment and engineering expertise. We collaborate with municipalities and contractors to deliver critical infrastructure improvements while minimizing community disruption through efficient project management.
People
Garrett Gentry
President
Founder of GJ Gentry General Engineeering, Garrett prioritizes employee welfare and safety while maintaining 100% customer retention since 2010. His vision combines family values with industry innovation.
Bryan Copping
Vice President & Project Manager Pipeline
Overseeing pipeline operations, Bryan brings decades of experience in municipal infrastructure projects and safety compliance to ensure successful project delivery.
Jim Zheng
Project Manager Concrete
Jim manages concrete operations with technical expertise in structural applications and heavy-duty paving solutions for commercial clients.
Gabriel Melgoza
Project Manager Grading
Gabriel leads grading projects with specialized knowledge in mass excavation and site preparation for complex terrains across multiple states.
Carina Chirino
Human Resource Manager
Carina supports our employee-centric culture by managing recruitment, benefits, and workplace programs that align with company values.
Questions
What construction services do you offer?
We provide grading, concrete work, pipeline installation, asphalt paving, and heavy civil infrastructure projects across California and Arizona.
How do you ensure job site safety?
Our OSHA 30-certified foremen and dedicated safety department enforce strict protocols to maintain a zero-accident workplace environment.
What areas do you serve?
We operate throughout California and Arizona, handling projects of any scale with our fleet of 300+ equipment units.
How long have you been in business?
Founded in 2010, we've maintained 100% customer retention while growing to a $35 million annual revenue company.
Can you handle large infrastructure projects?
Yes, our equipment and experienced teams manage projects from small repairs to major public works infrastructure developments.
