building structure

Frequently Asked Questions

Learn more about Stronghold Engineering, from our services and safety commitments to industry recognitions. For specific inquiries or more details, contact us today!

At Stronghold Engineering, we provide a broad array of services including general contracting, design-build projects, seismic retrofits, tenant improvements, historical renovations, ground-up building construction, HVAC and electrical upgrades, as well as civil and electrical infrastructure projects. Additionally, we specialize in renewable energy projects, including photovoltaic, battery storage, and electric vehicle charging systems.

Our corporate office is at 150 W. Walnut Ave, Perris, CA 92571.

We are proud to work with a diverse range of clients, including governmental agencies, private sectors, and civic organizations. Notable clients include the National Park Service, the State of California Department of Corrections and Rehabilitation, and the County of Santa Clara.

Our core values are quality, safety, teamwork, integrity, and commitment. These values are the cornerstone of everything we do and guide us in all our projects and interactions.

Our largest project to date is the $208 million Transcanyon Waterline project at the Grand Canyon for the National Parks Service.

At Stronghold Engineering, we provide a full spectrum of renewable energy services. Our expertise includes consulting, site inspection, project design, procurement, and comprehensive installation. We also offer project management, complete build solutions, and operations & maintenance for renewable energy systems. 

The specific trades available for apprenticeships may vary. Typically, these programs could include skilled trades such as electrical and carpentry. For detailed information, it’s best to reach out to us directly. 

Interested subcontractors can start by visiting the Subcontractors section on our website. There, you’ll find necessary information about prequalification processes and how to initiate contact with us to explore potential collaborations.

Stronghold Engineering is proud to hold several prestigious certifications that highlight our commitment to excellence and safety in the construction industry. We are certified as a Women’s Business Enterprise (WBE) by the Women’s Business Enterprise National Council (WBENC) and as a Minority Business Enterprise (MBE) by the National Minority Supplier Development Council (NMSDC). Additionally, the Supplier Clearinghouse recognizes us for both certifications.

We maintain an EMR of 0.65. This rating is a testament to our strong focus on safety and our effective risk management practices in all our projects, consistently performing better than the industry average when it comes to safety.

Stronghold Engineering holds licenses in multiple states, allowing us to offer our services across a broad geographic area. Our current licenses include:

  • California: A, B, C-11
  • Nevada: A, C-2
  • Arizona: A, C-11
  • Oregon: General Contractor (GC)
  • Utah: Contractor with LRF

Additionally, we have recently completed projects in Texas, Kansas, New Mexico, Hawaii, and Colorado and are prepared to take on new projects in these states as needed.