Straight answers
How much does an electrical panel upgrade cost in Santa Clara County?
Panel upgrade cost in Santa Clara County is not a single price: it depends on your current service size, whether the utility requires a new service entrance, trenching or mast work, subpanels, and local permit and inspection fees. Most projects fall in a wide range from a few thousand dollars for a straightforward same-size replacement to significantly more when upgrading amperage or rebuilding the service entrance.
What typically drives the price?
The largest variables are the target amperage (for example moving from 100A to 200A), PG&E or utility coordination, physical routing of conductors, meter/main configuration, and whether you need subpanels or generator or EV readiness at the same time.
Older homes in Milpitas, San Jose, and nearby cities often have bundled upgrades: new grounding, bonding corrections, and AFCI/GFCI protection when circuits are extended or replaced.
Why get a written on-site assessment?
A licensed electrician should inspect your existing panel, meter location, clearances, and load calculation before quoting. ARC Electric provides straight-forward pricing after assessment so you are not comparing guesses from photos or phone descriptions.
If you are adding EV charging, a kitchen remodel, or a heat pump, mention it during the visit so the panel plan matches future loads, not just today’s usage.
Related services
For scope and options, see our panel upgrade service page and EV charger installation if charging load is part of your upgrade.
This page is for general education and does not replace advice from your Authority Having Jurisdiction or a site-specific electrical assessment. ARC Electric is licensed in California (CSLB #1079430) and serves Milpitas, CA 95035, and Santa Clara County.