Zinsco Panel Replacement Cost
in Los Angeles [2026]
Zinsco (Sylvania) panels are among the most dangerous electrical panels in American homes. Here's what replacement costs in LA, why insurance requires it, and what to expect.
Published: 2026-10-30 · Updated: 2026-10-30
What Is a Zinsco Panel and Why Is It Dangerous?
Zinsco (also sold under the Sylvania brand) panels were installed in millions of homes from the 1950s through the 1970s. They are now considered one of the most hazardous electrical panels in residential use due to documented breaker failure rates.
Why Zinsco Panels Are a Fire Risk
Zinsco panels have a well-documented design flaw: the breakers can fail to trip during an overcurrent condition. This means the breaker may not shut off power when it should, allowing wires to overheat and potentially start a fire.
Key hazards
- Breaker failure to trip. The most dangerous flaw. Under fault conditions, Zinsco breakers may not disconnect, allowing sustained overcurrent.
- Bus bar corrosion. The aluminum bus bars corrode over time, creating high-resistance connections that generate heat.
- Breaker-to-bus connection loss. Breakers can lose contact with the bus bar, creating arcing and overheating.
- No replacement parts. Zinsco went out of business. Replacement breakers are no longer manufactured; only aftermarket parts exist, and they do not fix the fundamental design flaw.
Los Angeles homes built between 1950 and 1975 are the most likely to have Zinsco panels. If your panel says "Zinsco" or "Sylvania" on the label, it should be replaced.
Insurance Requirements for Zinsco Panels
Most California insurance companies refuse to cover homes with Zinsco panels, or charge significantly higher premiums. Common insurance requirements include:
- Policy denial or non-renewal. Many carriers will not write or renew a policy on a home with a Zinsco panel.
- Higher premiums. Some carriers offer coverage at 2-3x the standard rate.
- Required replacement. Some carriers require replacement as a condition of coverage, with a deadline (often 30-90 days).
- Documentation. Insurers typically require a permit and inspection record proving the panel was replaced by a licensed electrician.
AMY Electric provides the permit record, inspection certificate, and photos your insurer needs after a Zinsco panel replacement.
What Zinsco Panel Replacement Costs in Los Angeles
| Scope / Item | Typical Range | Notes |
|---|---|---|
| Panel replacement (100A to 200A) | $2,500 – $4,500 | Panel, labor, permit, inspection |
| Service entrance upgrade | $1,000 – $3,000 | If LADWP/SCE must upgrade the connection |
| LADBS permit & inspection | $200 – $450 | Included in all-in quotes |
| Temporary power (if needed) | $500 – $1,000 | For extended outages during replacement |
Ranges reflect Los Angeles labor rates. A site visit confirms the exact scope. Estimates are free and provided in writing.
What to Expect During Zinsco Panel Replacement
- Site visit and assessment. We inspect the panel, assess the service entrance, and provide a written estimate.
- Permit filing. We file the LADBS electrical permit before work begins.
- Utility coordination. If the service entrance needs upgrading, we coordinate with LADWP or SCE.
- Panel replacement. We remove the Zinsco panel, install a new 200A panel, and reconnect all circuits. Power is off for 4 to 8 hours.
- Inspection. LADBS inspects; we attend and provide the passed inspection record.
- Documentation. You receive the Certificate of Completion for your records, insurance, and future home sale.
Permit and Code Considerations in LA
- Permit required. Panel replacement requires an LADBS electrical permit and city inspection.
- Permit fees included. LADBS fees ($200-$450) are included in our all-in quotes.
- Utility coordination. LADWP or SCE may need to upgrade the service connection for higher amperage.
- Code compliance. Work must meet California Electrical Code and NEC requirements.
Los Angeles uses LADBS for electrical permitting. Never hire a contractor who suggests skipping a permit on panel work.
Zinsco Panel Replacement FAQ
How do I know if I have a Zinsco panel? ▾
Are Zinsco panels dangerous? ▾
Can I replace just the breakers instead of the whole panel? ▾
Will my insurance require Zinsco panel replacement? ▾
How long does Zinsco panel replacement take? ▾
Is Zinsco the same as Sylvania? ▾
Have a Zinsco Panel?
Free written estimates. Licensed C-10 #981578. We provide the documentation insurers need.
Call (818) 302-5614