Building California's
Future Infrastructure
Golden State Contractors delivers Design-Build, Commercial Construction, Electrical Infrastructure, Renewable Energy, Life Safety, and Government Contracting solutions throughout California.
Core Business Divisions
One contractor. Seven integrated divisions. End-to-end delivery from architecture and engineering through construction, commissioning, and long-term support.
Design-Build
Architecture, engineering, construction management and turnkey delivery from a single integrated team.
Commercial Construction
Tenant improvements, office, industrial, retail and infrastructure projects across California.
Government & Public Works
Municipal, educational, utility and prevailing-wage public works construction.
Electrical Infrastructure
Commercial, industrial and utility electrical, power distribution and building automation.
Renewable Energy
Solar, battery storage, EV charging and net-zero building solutions at every scale.
Life Safety & Security
Fire alarm, mass notification, access control and surveillance — backed by Alert One legacy.
Residential Design-Build
Custom homes, ADUs, remodels, smart-home, solar and EV charger installation.
Why Choose GSC
Alert One, Inc. DBA Golden State Contractors brings three decades of California construction expertise — combining a B General Contractor license with a C10 Electrical classification under one roof.
- 30+ Years Experience
- Licensed, Bonded & Insured
- Design-Build Expertise
- Architecture & Engineering Resources
- GC + Electrical Contractor
- Renewable Energy Specialists
- Government Contract Experience
- Life Safety Expertise
- Turnkey Project Delivery
- California-Focused Team
Industries Served
Let's plan your next California project.
From concept and engineering through construction, commissioning, and long-term support — GSC delivers turnkey solutions.