Wondering how long an electrical panel upgrade takes in Ventura County? The short answer: the electrical work itself takes about one day — but the full process, from your first call to final inspection, typically runs 2–4 weeks. Here’s a complete breakdown of every step and what affects the timeline at each stage.
Understanding the timeline upfront helps you plan better — whether you’re coordinating with a real estate deadline, preparing for an EV charger installation, or responding to an insurance company’s upgrade requirement.
How Long Does a Panel Upgrade Take: Full Timeline Overview
| Phase | Typical Duration |
|---|---|
| Initial estimate and proposal | Same day – 3 days |
| Permit application and approval | 3–10 business days |
| SCE scheduling and coordination | 1–3 weeks |
| Electrical work (on-site) | 4–8 hours (one day) |
| Final inspection | 1–2 weeks after completion |
| Total from first call to inspection | 2–5 weeks (typical) |
Phase 1: Getting Your Estimate (Same Day to 3 Days)
The process starts with an in-person or phone assessment. For a standard panel upgrade, Infinity Electric can often provide a written estimate within 24 hours. More complex situations — hazardous panel replacement, service upgrade from 100A to 400A, properties with unusual access — may require an on-site visit first.
The estimate phase is also when we determine your project scope: Is this a simple panel replacement at the same amperage? An upgrade from 100A to 200A? Are you bundling an EV charger installation at the same time? For EV charger cost details, see our EV charger installation cost guide.
Phase 2: Permitting (3–10 Business Days)
All electrical panel upgrades in Ventura County require permits. No legitimate licensed electrician will skip this step — and you should walk away from any contractor who suggests doing so. Unpermitted work creates liability when you sell your home and can void your homeowner’s insurance.
Infinity Electric submits permit applications to your local city or county building department on your behalf. Typical permit approval timelines in our service area:
- City of Ventura: 5–8 business days
- Oxnard: 5–10 business days
- Camarillo: 3–7 business days
- Thousand Oaks: 5–10 business days
- Santa Barbara: 7–14 business days
- Ojai: 5–10 business days
Some cities offer over-the-counter same-day permit approval for standard panel upgrades. Your electrician’s relationship with the local building department can sometimes accelerate this process.
Phase 3: SCE Coordination (1–3 Weeks — Often the Longest Step)
This is typically the longest phase in the panel upgrade process. Southern California Edison (SCE) must disconnect and reconnect power at your meter during a service upgrade. This requires scheduling an SCE crew — and their availability varies significantly depending on the season and their workload.
SCE scheduling considerations:
- Peak season (summer): SCE is often 2–4 weeks out due to high demand
- Off-peak (fall/winter): Scheduling often available within 1–2 weeks
- Emergency situations: If your panel is actively failing or creating a fire hazard, SCE can sometimes expedite service — we communicate urgency clearly on your behalf when warranted
Not all panel upgrades require SCE involvement. A simple panel replacement at the same amperage (e.g., replacing an old 200A Federal Pacific panel with a new 200A Square D panel) may not require a new SCE service — only a building inspection. Your electrician can tell you upfront whether SCE coordination is needed for your specific project.
Phase 4: The Electrical Work Itself (4–8 Hours)
Here’s what actually happens on panel upgrade day in Ventura County:
- Morning: SCE disconnects power at the meter (typically between 8–10am)
- Mid-morning: Electricians remove the old panel, disconnect all existing circuits, and mount the new panel in place
- Midday: All existing breakers and circuits are reconnected and labeled clearly in the new panel. Any new circuits (EV charger, additional outlets) are added at this stage
- Afternoon: Electricians do a full system test, verify all circuits are functioning correctly, and prepare the panel for inspection
- Late afternoon: SCE reconnects power. All lights, appliances, and devices come back online
Your power will be off for most of the workday — typically 6–8 hours. We recommend being away from home or prepared for a full day without electricity. Most families plan a day out, work from a coffee shop, or handle the project on a school day.
Phase 5: Final Inspection (1–2 Weeks After Completion)
After the installation is complete, the city’s building inspector must inspect the work and sign off on the permit. Infinity Electric schedules this inspection on your behalf and ensures everything meets California Electrical Code requirements before the inspector arrives.
Inspections are typically pass/fail on the first visit. If minor corrections are needed, Infinity Electric handles them at no additional charge and reschedules the re-inspection promptly.
What Can Speed Up or Slow Down Your Panel Upgrade Timeline?
Factors That Can Speed Things Up
- Choosing an electrician with an established permit relationship in your city
- Scheduling during fall or winter (when SCE is less backed up)
- Standard 200A upgrade (vs. complex 400A or unusual service situations)
- Panel location in an easily accessible area (attached garage)
Factors That Can Slow Things Down
- Peak summer season SCE scheduling
- Permit office backlogs
- Hazardous panel situations requiring expedited assessment
- Complex service upgrades (requiring transformer coordination)
- Panel located in difficult-to-access areas (crawlspace, finished wall)
Panel Upgrade Timeline: Bundled With EV Charger Installation
If you’re installing an EV charger at the same time as your panel upgrade — a very smart combination — the timeline is essentially the same as a panel upgrade alone. Both projects happen on the same day, permit together, and require one SCE disconnect/reconnect. The only difference is the EV charger installation adds 1–2 hours to the on-site workday.
For full cost details on bundled projects, see our panel upgrade cost guide and EV charger installation cost guide. It’s one of the most cost-effective electrical investments a Ventura County homeowner can make.
What About Emergency Panel Replacements?
If your panel is actively failing — burning smell, visible scorching, breakers that won’t reset, or sparking — you have an electrical emergency and the timeline concerns go out the window. Call immediately.
In emergency situations, Infinity Electric can often mobilize within 24–48 hours, expedite permit applications, and coordinate with SCE for priority service disconnection. The U.S. Consumer Product Safety Commission treats certain panel brands — particularly Federal Pacific — as elevated fire risks that warrant urgent attention. Don’t wait if you see warning signs.
Frequently Asked Questions
Does an electrical panel upgrade require me to be home?
Someone over 18 should be available for the start and end of the workday. You don’t need to hover — our electricians work independently — but an adult must be present for the SCE reconnect and for your final walkthrough of the completed panel.
Can I use electricity during an electrical panel upgrade?
No. Power will be off from the time SCE disconnects (typically 8–10am) until they reconnect in the late afternoon. Plan for a full day without electricity — no microwave, no TV, no phone chargers, no HVAC.
How do I know if the panel upgrade is done correctly?
The city inspection is your assurance. A licensed inspector reviews all work against California Electrical Code requirements. If anything is wrong, the inspector requires it to be corrected before the permit is closed. This is why permitting matters — it protects you. All CSLB-licensed contractors are legally required to permit electrical work.
Ready to Get Started? Here’s What to Do Next
Infinity Electric serves Ventura, Oxnard, Camarillo, Santa Paula, Ojai, Santa Barbara, Thousand Oaks, Westlake Village, Newbury Park, and all surrounding Ventura County communities. We handle the entire panel upgrade process from estimate to final inspection — and we make it as easy as possible for you.
Contact Infinity Electric to schedule your free panel upgrade estimate →