An ADU is a whole second home's worth of electrical, and most Livermore panels were never sized for it. Get the load wrong and the permit stalls, the inspector red-tags the job, or the breakers start tripping once someone moves in. We size, wire, and permit ADU electrical so it passes the first time and runs clean for good. Licensed, family-owned, and local to the Tri-Valley.
The electrical is what ties your new unit into the home's power safely and legally. Here is what we handle on an ADU, from the first load calculation to the final inspection.
A new ADU can push an older 100-amp panel past its limit. We run the load calculation, upgrade the main service to 200 amps where it is needed, and leave both the house and the new unit with room to spare. See our residential electrical work.
Your ADU gets its own subpanel fed off the main service, so the unit has dedicated power and its own breakers. We size it to the real load, usually 125 amps for an all-electric unit, so nothing fights the main house for capacity.
Kitchen, bath, laundry, HVAC, lighting, and outlets: we wire the whole unit to the California Electrical Code, with each circuit sized for what it actually runs. That is what keeps breakers from tripping once the ADU is lived in day to day.
ADU electrical has to be permitted and inspected in Livermore, and that is where a lot of projects stall. We pull the permit, build to code and Title 24, coordinate the PG&E connection, and stay on it through final inspection so sign-off is not the thing holding up your move-in.
Every ADU wires a little differently. Whether you are converting a garage or building new in the backyard, we handle the electrical that fits the unit and the way it ties into your home.
A standalone backyard unit needs its own feeder run from the main service, often trenched underground to the ADU. We size the feeder and subpanel for a full detached accessory dwelling unit.
Converting a garage means bringing the existing circuits up to living-space code and adding the outlets, lighting, and dedicated circuits a home needs. One of the most common ADU electrical jobs we wire in Livermore.
An attached unit ties into the existing house but still needs its own subpanel and its own circuits. We keep the two living spaces electrically separate, safe, and up to code.
A junior ADU built inside the existing home carries its own electrical requirements, even when it shares the main service. We wire the JADU to meet California's rules for the added kitchen and living space.
We will run the load calculation and tell you straight, before you spend a dollar.
From the first plan review to power-up, here is how an ADU electrical project runs with us, so you know what happens and when.
We review your ADU plans and run a load calculation on your existing service to see whether you need a panel upgrade, a new subpanel, or both.
We handle the panel upgrade or subpanel install and pull the electrical permit with the City of Livermore, drawn to the California Electrical Code and Title 24.
Once framing is ready, we run every circuit, outlet, switch, and fixture, plus any EV-ready or solar-ready conduit, then call for the rough inspection.
After finishes, we set the devices, coordinate the utility connection, and see the unit through final inspection so your ADU powers up ready to live in.
Most ADU delays trace back to electrical that was not planned to code from the start. We scope the panel, the subpanel, and every circuit against the California Electrical Code and Livermore's rules before we pull a single wire, so there is nothing to fail when the inspector shows up. And while the walls are open, it is the cheapest time to rough in EV-ready and solar-ready wiring for later.
Not always, but many Livermore homes with a 100-amp panel need an upgrade to safely carry an accessory dwelling unit. We check your existing service against the load of the new unit and tell you whether a panel upgrade or just a subpanel is the right call.
Yes. Electrical work for an ADU in Livermore requires a permit and an inspection. We pull the permit, build to the California Electrical Code and Title 24, and handle the inspection so your accessory dwelling unit is signed off properly.
A typical all-electric ADU runs on a 125-amp subpanel, though the right size depends on the unit's appliances, heating, and whether you want EV charging. As your ADU electrical contractor in Livermore, we size the subpanel to your actual plans.
Yes. Garage conversions are one of the most common ADU projects we wire in Livermore. We bring the existing garage circuits up to code for living space and add the panel, outlets, lighting, and dedicated circuits the finished unit needs.
We do. Most of our Livermore ADU electrical jobs are coordinated with a homeowner's general contractor or ADU builder. We schedule the rough-in and final around the rest of the build so the electrical keeps the project moving.
Still have questions about your ADU wiring in Livermore? Call (855) 530-0002 or request a free quote.
We handle ADU electrical throughout Livermore, including the 94550 and 94551 area, along with the nearby Tri-Valley communities of Pleasanton, Dublin, and San Ramon. Wherever you are adding a unit across the Tri-Valley, our licensed team can size and wire it right.
Bring us your ADU plans, or just the idea, and we will tell you straight what the electrical needs, from the panel to the permit. Licensed, family-owned, and local to the Tri-Valley. Reach out for a complimentary consultation to get started.