Commercial Low Voltage Installation in Fresno, CA
Low Voltage Installation Services in Fresno and Across California
Structured Cabling Systems
Lay the foundation for your business’s communications and data transfer with our structured cabling services, ensuring high performance and scalability.
We offer:
- Data Center Cabling: Precision-designed cabling solutions for data centers that facilitate efficient data management and future growth.
- Voice and Data Cabling: Comprehensive voice and data cabling services to support your telecommunication needs, ensuring clarity and reliability.
- Fiber Optic Installation: High-speed fiber optic installation services for superior bandwidth and communication speed across your business operations.
Security and Surveillance Cabling
Secure your premises with specialized low voltage cabling for security and surveillance systems, ensuring clear transmissions and reliable operations.
We offer:
- CCTV System Wiring: Dedicated wiring services for CCTV systems to provide uninterrupted surveillance and heightened security.
- Access Control Wiring: Customized wiring solutions for access control systems to ensure secure and selective access to different areas of your facility.
- Intrusion Alarm Wiring: Professional installation of wiring for intrusion alarms to protect your assets and provide immediate alerts.
Audio/Video Systems Installation
Create an immersive audio and video experience with our installation services, perfect for conference rooms, lobbies, and entertainment spaces.
We offer:
- Commercial Audio Systems: Installation of commercial-grade audio systems that deliver clear sound for presentations, announcements, and ambiance.
- Video Conferencing Systems: Set up of advanced video conferencing systems to facilitate seamless remote communication and collaboration.
- Digital Signage Solutions: Implementation of digital signage solutions for dynamic advertising, information display, and customer engagement.
Network Infrastructure
Build a robust and reliable network with our comprehensive infrastructure services, designed for optimal connectivity and performance.
We offer:
- Wireless Network Installation: Deployment of wireless networks that provide wide coverage and secure connections for all your business needs.
- Network Switching Systems: Installation of network switches to connect multiple devices on a computer network, using packet switching to forward data to its destination.
- Rack and Stack Services: Organized and efficient rack and stack services for your network and server components, ensuring proper airflow and ease of maintenance.
Types of Low Voltage Work We Install
Low voltage covers every system in a building that runs on low-voltage power or carries data, voice, video, or signaling rather than line power. These are the systems Sebastian installs for commercial, institutional, and public-sector clients:
| System | What It Includes | Where It's Used |
|---|---|---|
| Structured data cabling | Copper horizontal cabling, patch panels, racks, and termination for workstations and devices | Offices, schools, clinics, government buildings |
| Fiber optic cabling | Fiber backbones between floors, buildings, and campus sites, including underground runs | Campuses, multi-building sites, data rooms |
| Voice and VoIP | Cabling and infrastructure for phone systems | Any facility with a business phone system |
| Wireless networks | Wireless access point cabling, mounting, and coverage planning | Offices, warehouses, campuses, public venues |
| Security and surveillance | CCTV, access control, and intrusion alarm wiring | Entrances, perimeters, restricted areas |
| Fire alarm and nurse call | Low voltage fire alarm wiring and nurse call systems | Healthcare facilities, schools, public buildings |
| Audio and video | Conference room AV, commercial audio, digital signage, video conferencing | Boardrooms, lobbies, training rooms |
| Data rooms and racks | Rack and stack, cable management, and network switching | IT rooms, server closets, data centers |
Turnkey Low Voltage Design and Installation Packages
Site survey
Walk the building or site to document existing pathways, rooms, and systems.
Design and submittals
Cabling layouts, rack elevations, equipment selections, and submittal packages for owner or agency review.
Installation
Pathways, cabling, terminations, and device installation, coordinated with the electrical and general contractor schedule.
Testing and labeling
Each cable run is tested and labeled so the system can be maintained and expanded later.
Documentation and closeout
As-built records and test results turned over at completion.
Low Voltage Cabling for Public Agencies and Institutional Projects
Public agencies, school districts, and institutional owners in Fresno County and across California procure low voltage cabling differently than a private business does. Bids are more document-heavy, contractors have to be registered and qualified before award, and submittals are reviewed before work begins.
Sebastian is set up for that process. We hold a California contractor license (CSLB License No. 940822) and are registered with the California Department of Industrial Relations for public works, and our team has completed low voltage, fiber, and cabling work for public and institutional clients, including the Fresno State communications loop and a downtown Fresno municipal building.
For a closer look at what agencies should specify and verify before a cabling bid goes out, see our guide to Fresno County low voltage cabling procurement, along with how to hire a qualified government electrical contractor in Fresno.
One Contractor for Low Voltage, Electrical, IT, and Security
- Commercial electrical work for rack power, dedicated circuits, and panels
- IT and managed network services once the infrastructure is in
- Access control and security systems on the same cabling plant
- Commercial AV systems for conference rooms, lobbies, and venues
- Underground contracting for fiber and conduit between buildings
Low Voltage Projects in Fresno and the Central Valley
- Fresno State Communications Loop, Fresno: Fiber, structured cabling, and underground work upgrading the east communications loop, improving wired and wireless connectivity for that part of campus.
- Jamestown Dialysis Center, Jamestown: Fiber, data cabling, low voltage fire alarms, and nurse call, alongside all electrical systems.
- 700 P Street, Fresno: Low voltage design and installation of access control, CCTV, and fire alarm systems.
- Sun-Maid Headquarters, Fresno: Structured cabling, data racks, access control, CCTV, and AV.
- Hillside Elementary School, Madera: Structured cabling, underground trenching, electrical, and site lighting for a new school.
Low Voltage Contractor Serving Fresno, the Central Valley, and California
Sebastian’s low voltage crews work throughout Fresno, Clovis, Madera, Kerman, and the Central Valley. Our Sacramento and Foresthill offices support projects in the Sacramento region and the Placer and El Dorado County foothills, and we take on institutional and multi-site projects elsewhere in California.
Low Voltage FAQ
What does a low voltage contractor do?
What is the difference between low voltage and structured cabling?
What license does a low voltage contractor need in California?
Does Sebastian install fiber optic cabling?
Fiber optic cabling installation is part of Sebastian’s low voltage work, including fiber backbones between floors and buildings and underground fiber runs between campus sites, as on the Fresno State communications loop project.
Can Sebastian bid on public works low voltage projects?
Does Sebastian provide turnkey low voltage design and installation?
What areas does Sebastian serve for low voltage installation?
Low Voltage and Cabling Resources
When It’s Complicated, The Answer Is Simple. Sebastian!
Our low voltage crews work alongside our electrical, IT, and security teams, so cabling, power, and the systems that depend on them are designed and installed as one project.
What Clients Say About Us
Sebastian was able to determine the issues and make recommendations for solving those problems. We would most definitely recommend Sebastian to other colleges or businesses because of their well-rounded yet technical knowledge base, outstanding customer service, and continuing evolution of technology awareness.
Sebastian is one of the best companies I have worked with from a customer standpoint.
Sebastian is a well-recognized and highly recommended local company and a leader in the technology industry. Sebastian employees were all very gracious, friendly and technically competent. They were very quick to address our concerns.
Sebastian did a great job and I would use them again to run or fix fiber optic cables. Their team was very professional and did very clean work.
Karlene was a pleasure to work with and kept me updated during the entire process until the job was complete. I’ve worked with others in this industry and none compare to her experience or her professionalism!!
We are extremely appreciative and impressed not only with the work Sebastian has completed at Fresno State so far this year, but also the flexibility and commitment. We continually hear great things about Sebastian and are very excited to work with us on a new campus wide Access Point project.
Recent Projects
Request a Low Voltage Project Survey
The most accurate way to scope a low voltage project is a site survey. We’ll document your existing pathways, rooms, and systems, confirm what the project needs, and give you a proposal based on the actual building, or a response package if you’re working from a bid document.
To schedule a survey, request a proposal or call (559) 316-5179.



