San Francisco / Services / Subpanel Installation
Subpanel Installation · San Francisco, CA
Subpanel installation in San Francisco, CA
Need a subpanel in San Francisco? Call (815) 456-4349. We connect you with an independent, C-10 licensed contractor who installs subpanels for garages, accessory dwelling units, remodels and additions.
- California
licensed pros - Permits pulled
when required - Written estimate
before work - San Francisco
and nearby
What it is
What a subpanel does
A subpanel is a smaller breaker panel fed from the main panel. It adds breaker space close to where the power is used, without replacing the main service.
- Ground-floor garage conversions
- Accessory dwelling units (ADUs)
- Kitchen and bath remodels far from the main panel
- Workshops and studios
Subpanel or bigger service?
A subpanel adds space, not capacity. If the load calculation shows the service is too small, the contractor will recommend a service upgrade instead.
San Francisco specifics
Permits and planning for a subpanel
A subpanel needs a DBI electrical permit and inspection. In multi-unit buildings, the contractor confirms which meter and main feeds the new panel.
Working space in front of the panel is set by code. Small garages and closets can limit where a subpanel may go.
Once installed, the subpanel feeds new circuits for the space it serves.
Share these details
- Main panel brand and amp rating
- Planned appliances in the new space
- Distance from the main panel
From call to final inspection
How a typical San Francisco job works
You call
Tell us what is happening, your ZIP and how urgent it is. Have a photo of the panel label ready if you can.
We connect you
We match you with an independent, licensed electrician who handles that kind of work near you.
Estimate and permit
The electrician confirms the scope in writing and pulls a permit when the job needs one.
Work and inspection
The work is done, the local inspector signs off when required, and the utility reconnects service if it was disconnected.
More in San Francisco
Other electrical services in San Francisco
Emergency Electrician
Sparks, burning smells, dead circuits and storm damage.
Commercial Electrical Inspection
Inspections for insurance, leases and compliance.
Emergency Lighting Installation
Battery-backed egress lighting for commercial spaces.
Federal Pacific Panel Replacement
Replacing FPE Stab-Lok and other problem panels.
New Circuit Installation
Dedicated circuits for appliances, offices and additions.
Ceiling Fan Installation
Fan-rated boxes, new wiring, patio and vaulted ceiling fans.
Dimmer Switch Installation
LED-compatible dimmers installed and repaired.
Need subpanel installation in San Francisco? Have your ZIP and a short description ready.
Call (815) 456-4349Questions we hear
Subpanel Installation in San Francisco: FAQs
Talk to a licensed electrician
Describe the problem and your ZIP. We will connect you with a local pro in San Francisco.
Call (815) 456-4349Do I need a subpanel for an ADU in San Francisco?
Many ADUs get their own subpanel or meter. The contractor decides based on the load and the building's service.
Can a subpanel be fed from an old Federal Pacific panel?
Most contractors replace the FPE panel first, then add the subpanel.
How long does a subpanel installation take?
Often one to two days of work, plus DBI inspection timing.
Page updated 2026-10-25.