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# Electrical Panel Upgrade in Larkspur, CA

100 to 200 amp service upgrades, breaker box replacement and subpanels for modern loads. Serving Larkspur and Marin County.

(833) 652-8933 Request a quote

Open 24 hours, 7 days a week — flat price quoted before work starts

24/7Live dispatcher, every night and holiday
Flat priceQuoted before we start work
Same dayRepair slots most weekdays
Marin CountyCrews working locally

## Service directory — Larkspur

MAIN 200A
Emergency electrician 24/7 Electrical repair 15A Panel upgrade 200A Rewiring 12 AWG EV charger installation 50A Generator installation 22kW Lighting installation 20A Outlets and switches 20A Commercial electrical 3Ø Smart home wiring CAT6
Other electrical work in Larkspur.

## Electrical Panel Upgrade in Larkspur, CA

Panel upgrades are the job that unlocks everything else. In Larkspur and across Marin County, most requests for EV charging, heat pumps or ADU power start with a service upgrade from 100 amps to 200, because there is simply nowhere left to land a new breaker.

Call (833) 652-8933 and describe what is happening. If it is a same-day job we will book it today, and if it needs a site visit to quote properly we will tell you that too.

Electrical Panel Upgrade — the essentials
Typical service size | 200A residential, 400A for large homes and small commercial
Panel spaces gained | Commonly 20 to 42 breaker spaces after upgrade
Time on site | Most residential upgrades finish in one day
Included | Permit, utility disconnect coordination, inspection, grounding upgrade
Service area | Larkspur and Marin County, California

## What we cover

Electrical Panel Upgrade work we handle for Larkspur homes and businesses.

- Zinsco, Federal Pacific and Challenger panel replacement
- Subpanel installation for garages, shops and ADUs
- Meter main combo and service entrance replacement
- Grounding and bonding brought up to current code
- Load calculations for EV, HVAC and solar additions
- Fuse box to modern breaker panel conversion
- Whole-house surge protection added at the panel
- AFCI and GFCI breaker upgrades

### Not sure which you need?

Describe the symptom and we will tell you what it usually means. Most callers get a straight answer in a couple of minutes, and about a third of the time it turns out to be smaller than they expected.

Call (833) 652-8933

## Situations we see in Larkspur

### No space left in the panel

Double-tapped breakers and tandem cheaters are a sign the panel is full. A 200 amp replacement gives you 40 or more spaces and room for the next ten years.

### Adding an EV, heat pump or ADU

All of these need a load calculation. If existing demand plus the new load exceeds your service, the upgrade comes first.

### Zinsco or Federal Pacific panel

These breakers have a documented history of failing to trip under fault. Replacement is the only real remedy, and it is one of our most common Larkspur jobs.

### Panel is rusted or wet

Water in an enclosure corrodes bus stabs and creates high-resistance connections. Once rust reaches the bus, the panel is done.

## Larkspur coverage

Electrical Panel Upgrade across Larkspur and the towns around it.

### Panel upgrade near Larkspur

- Panel upgrade Corte Madera
- Panel upgrade Ross
- Panel upgrade San Rafael
- Panel upgrade Mill Valley
- Panel upgrade San Anselmo
- Panel upgrade Fairfax
- Panel upgrade Sausalito
- Panel upgrade Belvedere

### Other work in Larkspur

- Commercial Electrician in Larkspur
- Lighting Installation in Larkspur
- EV Charger Installation in Larkspur
- Smart Home Wiring in Larkspur
- Electrical Repair in Larkspur
- 24/7 Emergency Electrician in Larkspur

All electrical services in Larkspur

## Reviews from Marin County

★★★★★

Our restaurant lost the walk-in circuit on a Friday. They came out after close, traced it to a failed feeder lug, and we opened Saturday on time.

Ken A.Commercial repair · Larkspur
★★★★★

Bought a 1948 house with cloth wiring. They phased the rewire so we always had power in half the house, and gave us paperwork our insurer accepted.

Sofia M.Rewiring · Larkspur
★★★★★

GFCI in the bathroom kept tripping. They found real leakage in an old fixture rather than just replacing the GFCI and calling it done.

Nadia F.GFCI repair · Larkspur

## Electrical Panel Upgrade in Larkspur — questions

How long will my power be off during the upgrade?

Plan on most of a working day. We coordinate the utility disconnect and reconnect so the outage lands in one block rather than spread over days.

Do I need a permit for a panel upgrade in Larkspur?

Yes, service work is permitted and inspected. We pull the permit, schedule the inspection and meet the inspector so you don't have to.

Do I really need 200 amps?

If you are adding EV charging, electric heat, a hot tub or an ADU, almost certainly. We run an actual load calculation rather than guessing, and if 100 amps genuinely still works we will tell you.

How much does an electrical panel upgrade cost in Larkspur?

Cost tracks the service size, the condition of the service entrance and whether the meter has to move. A straight 100 to 200 amp swap sits well below a job that needs a new mast and underground feed. Call (833) 652-8933 and we will walk your panel and quote a flat number.

Can you replace just the breakers instead of the whole panel?

Sometimes. On a sound modern panel, breaker replacement is fine. On a Zinsco, Federal Pacific or corroded enclosure, new breakers don't fix the bus, so the panel gets replaced.

More about electrical panel upgrade · General FAQ

## Book panel upgrade in Larkspur

Call and speak to a dispatcher now, or send the details and we will come back with a time and a price.

(833) 652-8933 Answered 24 hours a day, including holidays
Call (833) 652-8933 Request service