Electrical Panel Upgrade & Replacement in Altadena, CA
Replacing worn-out and undersized panels, upgrading 60–100 amp services to 200 amps, and getting the permit, inspection and utility work done right.
When a Panel Upgrade Makes Sense
Many Altadena homes were built with 60- or 100-amp services that were never meant to carry central air, an induction range, a heat pump water heater and an EV charger at the same time. A panel upgrade gives the home the capacity, breaker space and safety protection modern loads need.
Not enough capacity
Breakers trip when several large appliances run, or a load calculation shows the service is already near its limit.
No room for new circuits
A full panel, or one crowded with tandem breakers, has no space for an EV charger, ADU feed or kitchen remodel.
Problem or worn-out panels
Fuse boxes, panels with known reliability problems (such as some Federal Pacific Stab-Lok and Zinsco panels), corrosion, scorch marks or breakers that won’t hold.
What a Panel Upgrade Involves
- Load calculationWe add up the home’s existing and planned loads to size the new service correctly: not too small for next year’s EV, not oversized for no reason.
- PermitWe file with LA County Building & Safety for Altadena, or the city building department elsewhere.
- Utility coordinationSCE schedules the disconnect and reconnect. In Pasadena, the utility is Pasadena Water and Power.
- InstallationNew panel and, where needed, new meter base, service mast or underground conduit, grounding and bonding, and labeled circuits. Surge protection is now required when a dwelling service is replaced.
- Inspection and reconnectionThe inspector signs off, the utility re-energizes the service, and we check every circuit.
Panel Upgrades in Altadena Homes
Altadena’s housing stock spans 1920s Craftsman and Spanish Revival homes to mid-century ranches, and older panels are common. Upgrading the panel is also the moment to deal with what it feeds: ungrounded circuits, cloth wiring and missing GFCI/AFCI protection. If you’re rebuilding after the Eaton Fire, the new service is designed from scratch, so size it for the house you’ll live in, including EV charging and backup power.
For Altadena addresses, permits come from LA County Public Works Building & Safety (Altadena is unincorporated, so not the City of Pasadena or LADBS). Pasadena, South Pasadena, San Marino and La Cañada Flintridge each have their own building departments. We pull the permit and meet the inspector.
What affects the cost
- Service size (100A to 200A is most common)
- Whether the meter base, service mast or underground service also needs replacing
- Panel location and code clearances
- Grounding and bonding corrections
- Utility requirements and permit fees
Related
Sub-panels and breakers · EV charger installation · Whole-house surge protection · Panel upgrade cost guide · 200 amp service requirements in California · Panel permit fees · Smart panels for older homes
We serve Altadena and nearby: Pasadena, South Pasadena, San Marino, La Cañada Flintridge, Sierra Madre, Arcadia and Eagle Rock. See all areas we serve.
What Customers Say on Google
“This team was contracted for work on our new 400 amp 3 phase service panel installation and the installation of high efficiency LED high bay lighting in our warehouse in preparation for the large scale expansion. From city permitting to final safety inspections, they did it all and we received an extremely clean well-labeled system, which significantly enhanced our facility’s energy efficiency.”
— Google review
“Our local electrician was amazing! He fixed our flickering lights and installed a new outlet with zero hassle. On time, reasonably priced, and very respectful of our home. You can tell he cares about doing quality work. Highly recommend him for any home electrical needs!”
— Google review
Frequently Asked Questions
Do I need a 200 amp panel?
Not always. A load calculation decides it. Many homes adding an EV charger or heat pump do need more capacity, but load management or a smart panel can sometimes avoid a full service upgrade.
How long does a panel upgrade take?
The on-site work is usually a day, with power off for part of it. The overall timeline depends on the permit and on scheduling the utility disconnect and reconnect.
Do I need a permit to replace my panel?
Yes. Panel replacements and service upgrades always need a permit and inspection, and the utility will not reconnect a new service without the inspector’s release.
Is my Federal Pacific or Zinsco panel dangerous?
Some Federal Pacific Stab-Lok and Zinsco panels have a documented history of breakers that may not trip properly. If you have one, have it evaluated; replacement is usually the safest option.
Plan Your Panel Upgrade
Call us for a load calculation and a firm price for the upgrade.