Do I need a permit to upgrade my electrical panel in California?
Short answer: yes. Upgrading or replacing your main electrical panel or changing your service needs an electrical permit in California. This is one of the jobs where the permit and an inspection genuinely protect you, because a panel done wrong is a fire and shock risk.
Why the panel is not a DIY swap
The panel is where your home's power comes in and gets distributed. Working on it means dealing with the main service, the grounding, and live connections from the utility. That is why a service or panel change is not on the list of work you can do without a permit, and why many places require a licensed electrician to do it. The permit gets the work inspected before it is energized.
Expect a licensed electrician and the utility
In a lot of California jurisdictions, a panel or service upgrade has to be done by a licensed electrical contractor, and the utility has to be involved to disconnect and reconnect the service. That coordination is normal and it is part of doing the job right. If someone offers to swap your panel cash, no permit, no license, that is a hard no.
Ignore the amperage rumors, check locally
You will see articles online claiming a panel under a certain amperage does not need a permit. That is not a statewide rule. Treat any amperage trigger you read as something to verify with your local building department, not a fact. The safe assumption in California is that a panel or service change needs a permit.
Always check your city or county
The permit requirement is statewide. Whether a homeowner can pull the permit themselves or it must be a licensed electrical contractor, plus the utility steps and fees, are local. Your building department will tell you exactly how it works where you live.
Common questions
Do I need a permit to replace my electrical panel in California?
Yes. Replacing or upgrading a main service panel, or changing your electrical service, requires an electrical permit in California and an inspection before it is energized.
Can I upgrade my own electrical panel in California?
A permit is required regardless, and many jurisdictions require a licensed electrical contractor for panel and service work plus utility coordination. Check with your local building department before planning to do it yourself.
Is there an amperage below which no permit is needed?
No statewide rule like that exists. Any amperage trigger you read online is jurisdiction-specific at best, so verify with your local building department. Assume a panel or service change needs a permit.