Electrician in Pasadena, CA: Panel Upgrades & Rewiring

Pasadena's housing stock skews old: Craftsman bungalows, Spanish revivals, and post-war tract homes that were wired long before anyone plugged in a car or a heat pump. That gap between 1925 wiring and 2026 electrical loads is what sends most people searching for an electrician in Pasadena, CA in the first place.

What Makes Pasadena Electrical Work Different

Pasadena is not a typical Los Angeles suburb from an electrical standpoint, and two local details catch homeowners off guard.

• Its own utility. Pasadena is served by Pasadena Water & Power, a municipal utility, not Southern California Edison. Service upgrades, meter releases, and rebates run through PWP on their own process and timelines. Neighboring Altadena, by contrast, is unincorporated LA County on SCE.
• Historic character. Large parts of the city sit in landmark or historic districts where exterior meter and conduit placement gets more scrutiny. A good contractor routes the service accordingly instead of running conduit across a street-facing facade.
• Older service sizes. 60-amp and 100-amp services are still common here, along with fuse boxes and long-discontinued Zinsco and Federal Pacific panels.

Signs Your Pasadena Home Needs a Panel Upgrade

A panel upgrade is the single most common job we do in the 91101 to 91107 zip codes. It is worth pricing out if any of the following sound familiar:

• You still have a fuse box, or a 60-amp or 100-amp main service.
• Breakers trip when the AC, microwave, and dryer run together.
• The panel is full, and there is no room for a new circuit.
• Your panel is a Zinsco, Sylvania-Zinsco, or Federal Pacific Stab-Lok, both of which have well-documented breaker failure issues.
• You are adding an EV charger, a heat pump, an induction range, or an ADU.
• The panel buzzes, feels warm, or shows rust and scorch marks.

Most Pasadena homes end up at 200 amps, which leaves headroom for future electrification. See our full electrical panel upgrade service page for what the work involves.

Permits and Utility Coordination

Electrical work in the city is permitted through Pasadena's Permit Center, and any service upgrade also has to be scheduled with PWP for the disconnect and reconnect. That coordination, not the labor, is usually what sets the calendar. Skipping the permit tends to surface later during a home sale or an insurance inspection, so it is not worth the shortcut.

Rewiring Older Pasadena Homes

Under the plaster in a 1920s bungalow you will often find knob-and-tube wiring: ungrounded, brittle after a century of heat, and unsafe to bury in modern attic insulation. Homes from the 1940s and 1950s frequently have cloth-insulated conductors that crumble when disturbed, and a slice of late-1960s and 1970s houses have aluminum branch circuits that need proper connectors at every device.

Full rewiring is disruptive, so many owners phase it: kitchen and bath circuits first, then bedrooms, then the service and panel. Insurance is usually the forcing function, since several carriers will not write or renew a policy on an active knob-and-tube house.

EV Chargers and Home Electrification

A Level 2 charger typically needs a dedicated 240-volt circuit on a 40- to 60-amp breaker. Before anyone quotes you, a load calculation should confirm your existing service can carry it. If it cannot, you have two paths: upgrade the service, or use a load-management device that shares capacity between the charger and other large loads, which sometimes avoids a panel upgrade entirely.

Our installers are EVITP-certified, the EV-specific credential many utility and manufacturer programs require. Because Pasadena is on a municipal utility, its rebate offerings differ from SCE's and change from year to year, so confirm what is currently available with Pasadena Water & Power before you buy hardware. Details on the install itself are on our EV charger installation page.

What Pasadena Electrical Work Typically Costs

Price depends on service length, panel location, wall access, and permit and utility fees. As rough planning ranges in this market:

• 100A to 200A panel upgrade: roughly $3,000 to $6,500, higher if the mast, meter, or underground service also has to be replaced.
• Sub-panel for a garage, ADU, or addition: roughly $1,200 to $2,800.
• Level 2 EV charger install: roughly $800 to $2,500 depending on the run from the panel.
• Whole-house rewire: commonly $15,000 and up, driven by square footage and how open the walls are.
• Diagnostic or repair visit: a few hundred dollars for most single-issue calls.

Treat those as starting points, not quotes, and be skeptical of any number given without someone looking at your panel.

How to Choose a Pasadena Electrician

• Confirm an active C-10 license on the CSLB website using the license number, not just a logo on a truck.
• Ask who pulls the permit. It should be the contractor, not you.
• For EV work, ask for the installer's EVITP certification.
• Get the scope in writing: panel amperage, circuit count, grounding and bonding, and who handles utility coordination.
• Ask about emergency response time. Ours is 24/7 emergency service.

Frequently Asked Questions

Do I need a permit for electrical work in Pasadena?

Yes for most work beyond swapping a like-for-like fixture or device. Panel upgrades, service changes, new circuits, EV chargers, and rewiring all require a permit and inspection through the City of Pasadena, and service changes also involve Pasadena Water & Power.

How long does a panel upgrade take?

The physical work is usually a single day. The full timeline, including permit issuance, the utility disconnect and reconnect, and final inspection, more often runs one to three weeks depending on scheduling.

Is knob-and-tube wiring illegal?

Existing knob-and-tube is not automatically illegal, but it cannot be extended, cannot be covered by insulation, and provides no ground. In practice insurance requirements, not code enforcement, are what push most owners to replace it.

Can I install an EV charger without upgrading my panel?

Often yes. If a load calculation shows spare capacity, or if a load-management device can share an existing circuit's capacity, a full upgrade may not be necessary. A 60-amp or full 100-amp panel usually does need one.

Do you serve Altadena and the surrounding area?

Yes. We work throughout Pasadena, Altadena, Sierra Madre, South Pasadena, Eagle Rock, Glendale, Burbank, and the San Fernando Valley. Altadena and other unincorporated areas are permitted through LA County and served by SCE rather than PWP, and we handle either process.

Talk to a Licensed Pasadena Electrician

911 Construction & Electric Inc. is a licensed, bonded, and insured C-10 electrical contractor (CA Lic. #1027421) based in Pasadena, serving Los Angeles and nearby cities. Panel upgrade, old-house rewire, EV charger, or a breaker that will not stay on: we look at the actual panel and give you a straight answer. Request a free estimate or call 747-255-8595 for 24/7 service. More on our local work is on the Pasadena electrician page.