Most California homeowners first hear the words "panel upgrade" from someone else: a solar salesperson, an EV charger installer, a home inspector. The next question is always the same. What does an electrical panel upgrade cost, and do I really need one?
Typical price ranges
A straightforward 200 amp panel upgrade in California commonly lands between about $2,500 and $5,000. Projects go higher when the service has to move, when an overhead service is converted to underground, or when the utility requires changes on its side of the meter. Replacing a panel like-for-like, without increasing the service size, usually costs less.
What changes the price
- Service size. Going from 100 amps to 200 amps means new service conductors and often a new meter socket, not just a new box.
- Location. Many older panels sit in closets or on walls that no longer meet clearance rules, so the new panel has to move.
- Overhead or underground. Underground services can require trenching and new conduit.
- Wall repair. Stucco, siding and drywall around the old panel often need patching.
- Grounding. Old homes frequently need new ground rods and bonding to water and gas piping.
- Permit and utility fees, which vary by city and county.
Do you need 200 amps?
Not always. A load calculation tells you what your home actually draws. A smaller house with gas heating and cooking may have plenty of room on 100 or 125 amps. Add an EV charger, a heat pump, an induction range and a hot tub and the answer changes quickly. Load management devices can also let one circuit pause while another runs, which sometimes avoids a service upgrade entirely.
Panel replacement versus a sub panel
If the main panel is in good condition and has capacity but no open spaces, a sub panel is the economical fix. If the panel is one of the older brands with a history of breakers that fail to trip, shows heat damage or rust, or is simply too small, replacement is the right call. An electrical inspection will tell you which situation you are in.
How long it takes
The swap itself is usually a one-day job with the power off for most of that day. The calendar time is in the permit and utility scheduling, which can run from days to several weeks depending on where you live. We work across the state, from Los Angeles and San Diego to Sacramento and San Jose, and timelines differ in each.
The bottom line
Get a written quote based on a look at your actual equipment, and ask to see the load calculation. A good electrician will tell you when you do not need the upgrade.