Electrical Panel Upgrades · San Mateo, California

Electrical Panel Upgrades in San Mateo, CA

Upgrading an electrical panel — typically 100A to 200A — to add capacity for EV chargers, heat pumps, induction ranges, and modern loads, including Federal Pacific and Zinsco replacements.

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Electrical Panel Upgrades for San Mateo Homes

Walk the established San Mateo neighborhoods and you find the same story behind a lot of the panel work we do: 1940s-60s homes in Baywood, Hillsdale, Beresford, and Shoreview that were wired for a very different era. Plenty of them still run a 100-amp service, and the oldest ones in San Mateo Park and Aragon sometimes still have an original fuse box bolted to the garage wall. That was fine when a house drew power for lights, a range, and maybe a window AC. It is not fine for a household charging an EV in the driveway, adding a heat pump, and running two home offices off the same tired panel. San Mateo stretches from the bay flats up into the western hills, so we see everything from slab-built ranch homes near Hayward Park to hillside houses in Sugarloaf where the panel sits on an exterior wall with a long run back to the meter. Fox Electric upgrades these services to a modern 200-amp panel, sized with a real load calculation so there is room for whatever you plug in next. We are based in San Carlos, a few minutes up El Camino, so getting to a San Mateo job is quick.

Permits & utility in San Mateo

Electrical service for San Mateo is provided by PG&E, and the electrical permit and inspection go through the local building department. We pull the permit and coordinate the PG&E service work as part of the job.

A San Mateo panel upgrade runs through PG&E for the service disconnect and reconnect, and the permit is pulled with the City of San Mateo Building Division, which inspects before the panel is re-energized. The housing mix shapes the work: pre-war homes in San Mateo Park and Aragon often hide a fuse box and dated wiring that should be looked at together, while hillside homes in Sugarloaf can mean longer service runs and weather-exposed exterior panels. Bay-flat homes in Shoreview and Fiesta Gardens are typically slab-built, so we plan around limited attic and crawl access.

Pricing depends on your home and scope — we give a free on-site estimate with a written, fixed price before any work starts. For typical Bay Area ranges, see our guide on what a panel upgrade costs in the bay area.

What's Included

Electrical Panel Upgrades in San Mateo

Load calculation to size the new service correctly

New 200A main panel (Eaton, Square D, or Siemens) and meter coordination

Federal Pacific / Zinsco fire-risk panel replacement

Sub-panel additions for garages, ADUs, and EV circuits

City permit pulled and electrical inspection closed out

Every circuit labeled and the panel directory typed

How We Handle Electrical Panel Upgrades in San Mateo

Straightforward, permitted, and clean — from your first call to final sign-off in San Mateo.

Load Assessment

A licensed Fox electrician runs a load calculation and gives you a written fixed-price quote — no surprises.

Permit & Utility Scheduling

We pull the city electrical permit and schedule the service disconnect/reconnect with your utility.

Install Day

Power off, old panel out, new 200A service in, every circuit relabeled — usually one working day.

Inspection & Reconnect

City inspection passed, utility reconnects, and you keep the permit closeout for resale.

Recent Project

200A Panel Upgrade — San Mateo200A Upgrade

A San Mateo homeowner needed more capacity for an EV charger and a future heat pump, but the home was still on its original 100A service. We ran a load calculation, pulled the city permit, coordinated the PG&E service window, and installed a 200A panel — every circuit relabeled and the directory typed, powered back up the same day.

Before: Original 100A service, no room to grow
After: 200A panel sized for EV + heat pump headroom
Coordination: PG&E disconnect/reconnect + city inspection handled
Outcome: Passed inspection, permit closed out for resale

The Fox Difference

Why San Mateo Chooses Fox Electric

Local to San Mateo

Based in San Carlos — 10 min away. We know San Mateo homes, PG&E coordination, and the local permitting.

Licensed & Insured

CSLB #1145945 — fully licensed C-10 contractor and bonded. Every job permitted and inspected to current code.

Permits & Utility Handled

We pull the San Mateo permit, coordinate PG&E service work, and close out the inspection — you schedule one day, we do the rest.

5.0★ on Google

We earn the rating on every visit, not just the first.

Upfront, Fixed Pricing

Free on-site estimate with a written fixed-price quote before any work starts. No obligation, no surprises.

Same-Day Availability

We hold same-day slots open for San Mateo homeowners when something can't wait.

Questions

Electrical Panel Upgrades in San Mateo — FAQ

Does a San Mateo panel upgrade go through PG&E or the city?

Both, in different roles. PG&E handles the actual service disconnect and reconnect at the meter, and the electrical permit is pulled with the City of San Mateo Building Division, which inspects the work before it is re-energized. Fox Electric coordinates both so you are not chasing the utility or the city yourself.

My older Baywood home still has a fuse box. Can you replace it with a breaker panel?

Yes, and it is one of the most common jobs we do in San Mateo. We replace the fuse box with a modern 200-amp breaker panel, label every circuit, and close out the permit. Many 1940s-60s homes in Baywood and Hillsdale were built with fuses or a small 100-amp panel that simply cannot carry today's loads.

I'm adding an EV charger in San Mateo. Do I automatically need a 200-amp panel?

Not always. We run a load calculation first, and sometimes a load-management device lets you add the charger on your existing service. If you are also planning a heat pump or induction range, going to 200 amps usually makes the next install simple. We size the upgrade to what you are actually adding rather than upselling capacity you will never use.

Will a hillside home in Sugarloaf cost more to upgrade?

It can take longer rather than cost more for the panel itself. Hillside San Mateo homes sometimes have the panel on an exterior wall with a long run back to the meter, and the terrain limits where conduit can go. We assess the service run during the walkthrough and give you a fixed-price quote that accounts for it before any work starts.

How long is my power off during a San Mateo panel upgrade?

Usually one working day. Power is off while we swap the panel, PG&E handles the disconnect and reconnect, and the City of San Mateo inspector signs off before final re-energization. We schedule the PG&E window ahead of time so you can plan around a single day without power.