Electrical Sub Panels
February 11, 2015

Residential Electrical Sub-Panel Installation in San Jose and Surrounding Areas
If you’re planning a home improvement project that involves your electrical system, Dollens Electric is here to help. Whether you’re adding a new room, installing a high-powered appliance, or your existing panel is full, a sub-panel can be the right solution.
We’ve been working in homes throughout San Jose, Santa Clara, Milpitas, Campbell, Cupertino, Los Gatos, and nearby areas for over two decades. Our team takes care of everything from planning and permits to installation and inspection.
Call Dollens Electric (408)929-6100
What Is a Sub-Panel?
A sub-panel is a smaller electrical panel connected to your main service panel. It distributes power to a specific area of your home or to equipment that needs its own dedicated circuits.
You might need a sub-panel if:
Your main panel has no more room for additional circuits
You’re adding a garage, ADU, or second unit
You’re installing a hot tub, EV charger, or new HVAC system
You want to better organize power for a certain part of the house
Sub-panels don’t increase the total power coming into your home, but they do allow for better circuit management and safer expansion.
When Do You Need a Sub-Panel?
Our process is simple:
We inspect your current system and determine if a sub-panel makes sense
We plan the installation, taking into account your future needs
We pull the required permits and schedule inspections
We complete the job to code and with attention to detail
We follow through until everything is up and running correctly
Every installation meets California Title 24 and NEC 2023 standards. We keep the work area clean, and we respect your home.

Excellent communication and professional!
Highly recommend!
Jason seemed to know the possible cause for the problem when I told him that the parts of the house were losing power gradually, and he was right!! He came out on the same day and fixed the problem (burnt crimp in junction box in the garage) within an hour!! Excellent!
They give an accurate read on what needs
to be done. They are a safety-first company
that shows up energetic & work...
They answered all our questions, let us know and talk through our options and didn't do any additional work without letting us know and approve the price difference for our requests, rather than telling us at the end of the job.
A+ work!
Update - Jason and Josh again came through for me. In the midst of a heat wave, they were able to come to the other end of the county and fix an electrical problem at my mother's house. Got the outlets for the portable AC and lift chair back working and made the wiring safer to boot.
Original - Could not ask for better. Jason installed a new 40 amp circuit and an EVo charger for our car. (No more slow 110 charging. Yeah!) While working in our breaker panel he noted a dangerous situation left by a previous contractor who upgraded our air conditioning.
(Side note kind of disappointing the inspector didn't notice that the other contractor put in a bigger breaker on a wire that was too small. Luckily the wire insulation had just started to bubble and it didn't catch fire.)
Within a week they were able to fit us in to replace the faulty circuit as well as rewire our garage lighting to eliminate some creative but scary runs of extension cords and re-purposed outlets. Now I have bright lights and when I look up, I don't see wires draped everywhere.
We connected with Jason of Dollens Electric through our equally excellent general contractor Dan Mackey. (Who by the way had nothing to do with the faulty circuit or the creative garage lighting.)
Lastly a thank you to Jason's son Josh who got to do the crawling under the house.
Availble Rebates
If you’re upgrading your electrical panel to support a solar system, heat pump, battery backup, or EV charger, you may qualify for rebate programs in the South Bay:
San Jose Clean Energy EcoHome Program – Up to $2,000
Visit the EcoHome Rebate PageTECH Clean California – Up to $2,000 for electrical upgrades with heat pump systems
See Program DetailsPG&E EV Charger Rebate – Up to $700 for income-qualified households
Check EligibilitySGIP Battery Storage Rebates – Varies by system and utility
Learn More
If you’re not sure where to start, we can help you find out what you’re eligible for and guide you through the process.
Why Choose Dollens Electric?
Licensed, bonded, and insured (C-10 contractor)
In business for over 20 years
Experienced with San Jose and South Bay permit offices
Clear communication and upfront pricing
Focused on safety, function, and long-term reliability
We treat your home like it’s our own. Whether the job is big or small, we’re committed to doing it right.
Have questions? Ready to schedule an inspection? Give us a call. We’re happy to talk through your project and let you know what to expect.
Dollens Electric at
(408)929-6100
We accept most major forms of credit cards, including Visa and MasterCard.
3-year parts warranty and a lifetime warranty on craftsmanship.
Serving: San Jose, Santa Clara, Milpitas, Campbell, Cupertino, Los Gatos, and surrounding areas