Electrical Panel Upgrade Cost: 200 Amp and 400 Amp Prices

Upgrading an electrical panel from 100 to 200 amps costs $1,500–$3,000 for most homes in 2026, while a 400-amp service runs $4,000–$7,000+. The spread inside those ranges is scope: a straight panel swap is a half-day job, but many quotes are really a service upgrade — new meter base, service mast, grounding, permit, utility disconnect and reconnect, and inspection. This guide is the pillar of our electrical cluster: the member guides cover whole-house rewiring, EV charger installation, ceiling fan installation, and what electricians charge overall in our electrician cost hub.

Panel upgrade cost by scope (2026)

Labor is roughly half the bill: electricians charge $50–$150/hr (see the electrician cost hub for the full rate picture), and a panel job is two-person work for much of the day. Parts run $300–$800 for the panel and breakers — more in the AFCI/GFCI-heavy breaker counts current code requires — plus $200–$600 in service conductors, meter base, and grounding materials on a full service upgrade.

Panel-only vs. full service upgrade

This distinction is where quotes confuse homeowners, because both get sold as “a panel upgrade.” A panel-only swap replaces the breaker box and breakers; the service entrance — meter base, mast, and the conductors from the utility drop — stays. That works when the existing service is already rated for the amperage and in good condition. A full service upgrade replaces the whole chain the power travels: service conductors, meter base, mast (or underground lateral), grounding electrodes and bonding, and the panel. Older 60- and 100-amp homes almost always need the full version — the original meter base and mast were never rated for 200 amps. Any honest quote names which version you are buying; if it just says “panel upgrade — $1,400,” ask.

Signs you actually need an upgrade

• You are adding a major load: an EV charger, hot tub, pool, workshop, addition, or electric heat. Our EV charger guide covers the most common trigger — many charger installs are blocked until the panel has capacity.
• Breakers trip under normal use — space heater plus microwave, AC plus dryer — a pattern of a loaded panel, not a bad breaker.
• Your panel is full: no open slots, tandem breakers doubled up everywhere, or a fuse box still in service.
• You have a known problem panel: Federal Pacific Stab-Lok and Zinsco panels have a documented history of breakers failing to trip on overload — a genuine fire risk that insurers and home inspectors flag on sight. Challenger and Pushmatic panels draw similar scrutiny.
• An HVAC or remodel quote says so: a new central system often needs panel capacity the old one lacks — see how this interacts in the AC replacement cost guide.
• Rust, buzzing, scorch marks, or a warm panel cover: stop reading guides and call an electrician; these are failure symptoms, not upgrade planning.

How the job actually runs: permit, utility, inspection

1. Load calculation + site visit. The electrician calculates your home's demand under NEC Article 220 and inspects the existing service — this is what determines 200 vs. 400 amps and panel-only vs. full service.
2. Permit pulled. The electrician files with your building department ($100–$400 typical). Panel and service work is permitted work in effectively every US jurisdiction.
3. Utility coordination. The utility must disconnect power at the meter for the swap and reconnect after. Scheduling this is usually the longest lead time in the project — days to a few weeks depending on the utility.
4. Install day. Power off in the morning; panel, meter base, mast, and grounding replaced; circuits re-landed and labeled. Most homes are re-energized the same day.
5. Inspection. The city inspector verifies the work — breaker sizing, grounding, clearances, labeling. Some utilities will not set the permanent meter seal until inspection passes.
6. Final labeling + paperwork. You should receive a labeled panel directory and the passed inspection record; both matter at resale.

The older-panel insurance problem

Federal Pacific Electric (FPE) Stab-Lok panels, installed in millions of homes from the 1950s through the 1980s, are the single most common forced upgrade. Their breakers are documented to fail to trip at a materially higher rate than modern breakers, which turns an overload into overheated wiring. Zinsco (later Sylvania) panels have a similar record of breakers welding to the bus bar. Many insurers now decline new policies or demand replacement on homes with either brand, and FHA/VA appraisers flag them. If your home has one, the upgrade is not optional maintenance — it is the price of normal insurance coverage, and it is worth doing before a claim or a sale forces the timeline.

DIY vs. hiring a pro

This is the shortest DIY section in our electrical cluster because the honest answer is: do not DIY a panel upgrade. The conductors feeding your panel are live at utility voltage until the utility disconnects them, and there is no breaker in your home that makes the service side safe to touch. Most jurisdictions legally restrict service work to licensed electricians working under a permit, and utilities will not reconnect an unpermitted, uninspected service — so even a technically confident homeowner ends up with a house that cannot legally get its power back. Where DIY legitimately fits: clearing the required 36-inch working space in front of the panel, planning circuit labels, and doing the non-electrical prep (drywall access, moving storage) that keeps the electrician's hours billable to electrical work only. Our DIY vs. pro cost guide puts electrical at the top of the never-DIY list for exactly these reasons.

Do you need a permit?

Yes — for panel and service work, in essentially every US jurisdiction, with no realistic exceptions. The permit (typically $100–$400) is pulled by your electrician, the utility disconnect/reconnect is scheduled around it, and the inspection is what makes your insurer, your lender, and the next buyer accept the work. A quote without a permit line for a panel upgrade is not a discount; it is a disqualification. Permit specifics and fees vary by municipality, so confirm the number on your written quote.

Costly mistakes to avoid

• Buying the cheapest quote without asking panel-only or full-service. A $1,400 swap quote against a $3,200 full-service quote is not the same job — the cheap one leaves your undersized meter base and mast in place.
• Skipping the load calculation. Guessing 200 vs. 400 amps wastes money in both directions; the NEC load calc is a 20-minute exercise your electrician should show you.
• Letting anyone work on an FPE or Zinsco panel “one more year.” The failure mode is not a tripped breaker, it is a breaker that never trips.
• Forgetting whole-home surge protection. The panel is open exactly once — adding a Type 2 surge protector during the upgrade adds $150–$350 in parts and labor against $250–$500 as a separate visit. With electric heat, well pumps, and EV chargers on modern panels, it pays for itself the first storm. (Our home winterization guide covers the surge and freeze-protection angle for the rest of the house.)
• No room to grow. Specify a panel with more spaces than you need today — a 40-space panel vs. 30-space is a small parts difference and saves a subpanel later.
• Hiring the handyman for service work. Panel work is licensed-electrician territory in most states; an unpermitted swap can void insurance coverage for any later electrical fire.