Electrical Panel Upgrade Cost Guide — Northern Virginia 2026

A code-compliant 200-amp panel upgrade in Northern Virginia uses the public $3,500–$7,500 range. The defined public scope includes the panel, fireman's disconnect, basic surge protection, permit, Dominion coordination, and final inspection; the proposal documents applicable service equipment and site conditions.

400-amp service is quoted per project after the load, utility design, equipment, route, and site conditions are reviewed.

Current pricing reflects the applicable permit, service, grounding, and safety scope; the written proposal identifies what applies to the address.

The 2020 NEC adoption added several requirements that didn't exist when older quotes were issued, and they're now mandatory:

• Outdoor fireman's disconnect at the meter — separate from the main panel inside the house. Required so the fire department can de-energize the home without entering the building.

• Whole-home surge protection (Type 1 or Type 2 SPD) integrated into the new panel. Protects every electronic device in the home from utility-side surges.

• New service entrance conductors (SEC) from the meter to the panel, properly sized for 200A. The old wires retire, not get reused.

• New meter base on most overhead-service installations. The old meter bases typically aren't rated for the integrated fireman's disconnect.

• Permit and inspection through the local jurisdiction (Fairfax County DPWES, Arlington County, City of Alexandria, Loudoun County Building & Development, etc.).

• Dominion Energy coordination for overhead-service homes. We schedule the meter disconnect and reconnect; you don't.

• Updated grounding electrode system to current NEC 250 standards. Most pre-1985 homes have inadequate grounding by today's code.

Three Northern Virginia-specific factors push a project toward the upper or lower end of the public range:

• Service type: overhead vs. underground. The serving utility controls disconnect, reconnect, and utility-side design. Dominion coordination is included in the defined public scope, and its schedule can affect the timeline.

• Panel location accessibility. An unfinished-basement panel is usually easier to access than equipment in a finished interior space. Plaster, masonry, tight clearances, and restoration responsibilities are documented in the proposal.

• Existing wiring conditions. Aluminum branch wiring and damaged feeder terminations require compatible listed terminations and a condition-specific plan. Any separate remediation discovered outside the defined scope is documented before work proceeds.

Permit fees, review queues, and inspection availability vary by jurisdiction in the DMV and can change. The written proposal identifies the applicable permit scope and fee for the address. Fairfax County, Arlington County, the City of Alexandria, Loudoun County, Prince William County, and Maryland jurisdictions each control their own review and inspection schedules. Historic-district review, exterior meter relocation, utility design, overhead or underground service, and plan-review requirements can add separate coordination. We confirm the current path when the permit is filed rather than promising a fixed turnaround.

If your home has a Federal Pacific (FPE) Stab-Lok panel or a Zinsco/Sylvania-Zinsco panel, the panel upgrade is more time-sensitive than a typical capacity upgrade. Both brands have documented failure modes:

• FPE Stab-Lok breakers fail to trip during overloads at rates exceeding 50% in independent testing. The breaker that's supposed to protect a circuit during a fault doesn't trip, current keeps flowing, and wire insulation melts.

• Zinsco breakers fuse to the aluminum bus bar during repeated minor overloads. Once fused, the breaker can never trip again — current keeps flowing past safe limits during the next major overload.

Replacement cost is the same as a standard 200A upgrade ($3,500–$7,500). The urgency factor is the insurance angle: most Northern Virginia homeowner's insurance carriers now treat both panels as policy-renewal-blocking. Many real-estate transactions require replacement before closing.

If you're not sure whether your panel is FPE or Zinsco, the breakers are usually colorful (red, blue, green, yellow) or have "FPE" / "Federal Pacific" / "Stab-Lok" / "Zinsco" / "Sylvania" / "Magnetrip" on the cover or breakers themselves. See our dedicated pages on FPE replacement and Zinsco replacement for the full picture.

Every panel upgrade we do includes:

• Written quote before the work starts. Scope changes are documented before work proceeds.

• Five years of warranty on installation labor. Manufacturer warranties on the new panel and breakers (Square D, Siemens, or Eaton) pass through to you and typically run 5–10 years.

• Insurance-ready documentation. After the inspection passes, you receive an itemized invoice, the permit close-out, and a letter you can send to your homeowner's insurance carrier confirming the upgrade with a UL-listed modern panel.

• Master-electrician oversight. Every panel upgrade is done by our crew under our Virginia Class B contractor license (VA DPOR #2705031092, Electrical/ELE), with a licensed master electrician on the team.

• Inspection coordination. We schedule the required inspection and address inspector questions through the documented permit process.