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Electrical Panel Upgrade San Mateo CA for older homes

An Electrical Panel Upgrade San Mateo CA homeowners can count on starts with a real load calculation, not a guess. We swap outdated 100 amp service, overloaded fuse boxes, and warm panels for Square D or Eaton gear sized to your home, then pull the permit and pass inspection. Same-day estimates across San Mateo County.

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  • Same-Day Service
  • 24/7 Emergency
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Licensed Licensed & Bonded
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Warranty Backed Workmanship Guaranteed in San Mateo
Close-up of industrial warning signs on an aged electrical panel.
On the job

15+

Years Local Trade

Electrical Panel Upgrade San Mateo CA done by licensed C-10 electricians

San Mateo Panel Pros handles Electrical Panel Upgrade San Mateo CA work from start to finish: load calculation, permit, panel swap, inspection. We work on the 1920s bungalows near Central Park, the post-war tracts in Beresford, and the newer builds out by the Bridgepointe area. Old 60 amp fuse boxes and 100 amp panels are our daily bread. We are a state-licensed C-10 electrical contractor, bonded and insured.

What separates us is the paperwork and the follow-through. We pull local building permits, install UL listed equipment, and wire to NEC code compliance and NEMA standards, so nothing comes back to bite you at resale. If you have been searching for an electrical panel upgrade in San Mateo CA near me and getting voicemail, call us at (650) 372-5030. We answer, we show up, and we finish the job the same week in most cases.

3,200+

Jobs Completed

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Google Rating

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Emergency Line

Panel services we run across San Mateo

Every job starts with a clamp meter reading and a circuit breaker finder walk-through so we know exactly what your house is pulling before we touch anything. Whether you need a 200 amp upgrade for a new EV charger or a straight electrical panel replacement after a storm surge, we handle the whole scope. Most San Mateo homes we see are running 100 amp service that was never sized for today's load.

Complex network of electrical wiring and control panels in an industrial setting.

Electrical Panel Replacement

A straight swap of a failed or recalled panel with new breakers, bus bar, and neutral bar. We torque every lug with a torque screwdriver to spec, label the circuits, and leave you a panel that passes inspection the first time. Typical job runs four to six hours.

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Engineer in safety gear working on an outdoor electrical panel, ensuring system functionality.

Electrical Panel Repair

Corroded panel connections, tripping circuit breakers, and warm panel covers do not always mean a full replacement. We diagnose with a multimeter and voltage tester, replace burnt lugs or a failed main breaker, and tell you straight whether a repair holds or you are throwing money at a dead panel.

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An electrician carefully examines a residential fuse box indoors, ensuring electrical safety and compliance.

200 Amp Panel Upgrade

The standard for San Mateo homes adding an EV charger, a heat pump, or an ADU. We run the load calculation, coordinate with PG&E on the service drop, and install a 200 amp panel with room for future circuits. Most homeowners ask us whether a 200 amp panel upgrade is worth it in San Mateo CA, and for anything built before 1980, the answer is usually yes.

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Aged and rusty electrical panels on an outdoor wall in Ho Chi Minh City, Vietnam.

Fuse Box Replacement

Those old 60 amp fuse boxes in pre-war San Mateo homes cannot carry a modern kitchen, let alone a dryer and AC at once. We retire the fuse box, install a breaker panel with proper grounding wire and conduit, and bring the whole service up to current code. Permitted and inspected.

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Close-up of green electrical boxes and wiring in a wall setup.

Subpanel Installation & Upgrades

Detached garages, backyard workshops, and additions often need their own subpanel rather than a bigger main. We size the feeder, run conduit, and land a clean subpanel with its own breakers. Great for EV chargers in the garage or a mini-split in a converted space.

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Why San Mateo homeowners call us for panel work

Panel work is not a place to gamble on the cheapest bid. A bad install means nuisance tripping, failed inspections, and a real fire risk behind the wall. Here is what you actually get when you hire us.

  • Licensed, bonded, and insured We are a state-licensed C-10 electrical contractor, bonded and insured. Every panel we install is UL listed equipment wired to NEC code compliance and local building permits. You get the inspection sign-off in writing, which matters when you sell the house.
  • Same-day estimates, no surprises Call before noon and we can usually get an electrician to your door the same day for a free estimate. You get a written price before we start, and that number does not move unless you change the scope. No trip charges, no mystery line items.
  • Emergency panel work, 24/7 Warm panel, burning smell, or a main breaker that will not reset? We run emergency electrical panel upgrade San Mateo 24/7 calls, including storm-related power surges that fry a panel. We isolate the problem, make it safe, and schedule the permanent fix.
Close-up view of electrical relays in an industrial panel box showcasing circuit components.

98%

Of our customers refer us within the first year.

How a panel upgrade actually goes

No mystery, no waiting around. Here is the sequence from your first call to the final inspection, and what you will see at each step.

01

Call and load calc

You call, we ask a few questions about your home's age and what you are running. We schedule a free estimate, usually same day. On site, we take clamp meter readings and do a proper load calculation to size the panel correctly.

02

Written quote and permit

You get a written, itemized price before we start. Once you approve, we pull the local building permit with the city. That permit is what gets your install inspected and signed off, and it protects you at resale.

03

Install day

Power is off for four to eight hours on a typical swap. We mount the new enclosure, land the grounding wire, torque every lug, and label every circuit. We clean up and haul the old panel away.

04

Inspection and walkthrough

We meet the inspector, walk you through the new panel, and show you which breaker controls what. If anything needs a tweak, we handle it. You get the sign-off and a warranty on our workmanship.

Panel problems we fix every week in San Mateo

Most panel calls start with one of these five symptoms. If any of them sound familiar, do not wait. A warm panel or a breaker that keeps tripping is your house telling you something.

01

Breakers trip every time the dryer and microwave run together

(Our Fix)That is an overloaded panel, not a bad breaker. We run a load calculation, and in most San Mateo homes built before 1980, the fix is a 200 amp upgrade. New panel, new breakers, and you stop resetting the same circuit every laundry day.

02

The panel cover is warm to the touch

(Our Fix)A warm panel means loose or corroded connections arcing under load. We shut it down, inspect every lug with a voltage tester, and either replace the failed connections or swap the panel. This one is a same-day call, not a wait-and-see.

03

Old 60 amp fuse box with no room for anything new

(Our Fix)You cannot add an EV charger or a mini-split to a 60 amp fuse box. We retire it, install a modern breaker panel with proper grounding, and bring the service up to code. Permitted, inspected, and done in a day for most homes.

04

Lights flicker when the AC kicks on

(Our Fix)Flickering on startup usually points to an undersized service or a failing main breaker. We diagnose with a clamp meter, confirm the cause, and quote the fix. Sometimes it is a repair, sometimes it is a full panel replacement, and we tell you which straight.

05

Storm surge fried the panel and half the house is dead

(Our Fix)We run emergency panel calls 24/7 for exactly this. We isolate the damaged circuits, make the panel safe, and get power back to the unaffected part of the house the same night. Permanent replacement gets scheduled right after.

Panel upgrade service across San Mateo County

We work out of San Mateo and cover the whole peninsula stretch, from the flats near the Hayward Park area down through San Mateo County. Whether you are in a 94401 bungalow or a 94404 townhome, we know the housing stock and the permit offices. If you need the best electrical panel upgrade in San Mateo and the surrounding towns, we are a short drive away.

Service Area

Electrical Panel Upgrade Coverage Across San Mateo & San Mateo County

Routine and same-week appointments for residents and businesses across San Mateo County, including the ZIP codes below.

9440494401944029440394497

Electrical Panel Upgrade San Mateo CA questions

Straight answers to the questions we get on nearly every panel call in San Mateo. If yours is not here, call us and we will walk you through it.

How much does an electrical panel upgrade cost in San Mateo CA?
Most 100 amp panel replacements run $1,850 to $3,200, and a full 200 amp service upgrade runs $3,400 to $6,500 in 2026. Simple repairs start around $385. The range depends on panel size, whether the meter main needs replacing, and how much conduit and grounding work your house needs. We give you a written, itemized price before we start.
Who does electrical panel replacement near me in San Mateo?
We do, and we are local. San Mateo Panel Pros is a state-licensed C-10 electrical contractor working out of San Mateo and covering the whole county. Call (650) 372-5030 and we can usually get an electrician to your door the same day for a free estimate. No trip charge, no runaround.
Do I need an electrical panel upgrade in San Mateo California?
You need one if your panel is 100 amps or less, if breakers trip when you run normal appliances, if the panel cover is warm, or if you are adding an EV charger, heat pump, or ADU. A 60 amp fuse box cannot carry a modern house. We will tell you honestly whether a repair holds or a replacement is the right call.
What is the best electrical panel replacement company in San Mateo?
Look for a licensed C-10 contractor who pulls permits, installs UL listed equipment, and wires to NEC code compliance. We do all three, and we are bonded and insured. Ask any company for their license and whether they pull a permit. If they dodge the permit question, keep looking.
Is a 200 amp panel upgrade worth it in San Mateo CA?
For most San Mateo homes built before 1980, yes. A 200 amp panel gives you room for an EV charger, a heat pump, a tankless water heater, and an ADU without tripping breakers. It also adds resale value and passes inspection cleanly. If your house is small and all-gas, a 100 amp replacement may be enough, and we will say so.

Get your Electrical Panel Upgrade San Mateo CA quote today

Warm panel, tripping breakers, or no room for an EV charger? Call San Mateo Panel Pros at (650) 372-5030 for a free same-day estimate. Licensed C-10 electricians, permits handled, work warrantied.

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Call San Mateo Panel Pros

Call (650) 372-5030 or email info@sanmateopanelpros.com and we will get you on the schedule. We answer the phone Monday through Friday, 8am to 6pm, and we run emergency panel calls 24/7. Same-day estimates are standard. If your panel is warm or a breaker will not reset, call now rather than waiting.

Or call us right now at +16503725030 — we answer.

San Mateo Panel Pros

  • Phone

    +16503725030

  • Address

    7 37th Ave, San Mateo, CA 94403, USA

  • Hours

    Mon–Fri: 7AM – 7PM
    Sat: 8AM – 4PM
    Sun: Emergency Only
    24/7 Emergency Available

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