Service you can trust.

Since Sebastian emerged into the construction market, we have been a leader in electrical, low voltage, and underground contracting. We also act as a telecommunications, MSP, and low voltage security provider. Navigate below to learn more about our integrated services.

We've been around for over 75 years and continue to grow. Get to know who we are, how our business has grown, and what we can do for you.

Providing quality telephone service to our community since 1946.

Sebastian has been dedicated to proving the best local and long-distance phone service, high-speed internet, and monitored security systems to our customers for 75 years. Our competitive pricing and breadth of service sets us apart from all other providers in the valley. 

Sebastian has been building communications networks since 1946. We design solutions for your communications needs at the best possible price. View our communications services for pricing details.

We also partake in California's Lifeline Program that provides discounted basic residential telephone service to low-income Californians.

When you need a high-speed connection to the world around you, Sebastian has you covered with internet speeds up to 200 Mbps. Our advanced Lightwave fiber optic network is superior cable, and it connects right to your doorstep. Whether you’re a casual user or a demanding downloader, you’ll have super-fast access for streaming video, web browsing, and all your internet needs.

Sebastian’s local, state-of-the-art monitoring center can respond to your alarm within seconds, to help keep your family and property safe and protected. Whatever your needs and whatever your budget, we can design and install a security system that’s right for you.

Secured by Sebastian.

We provide you commercial and residential options to keep you connected and secured. Our in-house IT team provides helpdesk support 24/7 for all your Sebastian managed services. We can design and customize all audio/video, communications, security, and IT solutions for your business. 

Utilize our CCTV, fire/burglar alarms, access control, and a variety of other systems to ensure the safety of your employees and building.

We are a managed service provider, meaning we can provide in-house IT support for your business amongst other IT products and services.

Our video conferencing, board room systems, and integrated control systems are all custom designed to fit your needs.

Our phone systems, high speed internet, service plans, and other communications services are designed to keep your home and business connected.

IT services designed for our customers.

Managed services enable Sebastian to proactively monitor devices and the IT network. Sebastian can identify and fix issues before they become disruptive. Sebastian handles all updates to keep you safe and in compliance with best practices (e.g. automated software updates). 

  • Strategic Consulting

  • 24/7 Helpdesk

  • Managed IT Services

  • Performance Monitoring

  • Risk Assessment

  • IT Best Practices

Qualified construction experts.

Our construction teams are organized for maximum efficiency from the top down. Sebastian eliminates the need for multiple subcontractors and provides a wide range of integrated services, so we can handle the entire job — and get it done right. 









Meet our satisfied clients.

We pride ourselves on the quality of our work and our clients can attest to it.
View some of the testimonies from our valued clients below.