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How much does an electrical panel upgrade cost in Mercer Island, WA?

US national rangeUpdated Prices checked October 20261 source

An electrical panel upgrade costs $518 to $2,193 nationally, typical $1,347. We have no documented price index for Mercer Island for this job, so this is the US national range from HomeAdvisor, checked October 2026.

US national range, not adjusted for this city

Low
$518
Typical
$1,347
High
$2,193

Get electrical panel upgrade quotes in Mercer Island

Electrical panel upgrade cost in Mercer Island, WA

We have no documented price index for Mercer Island for this job, so the table shows the US national range.

Electrical panel upgrade cost in Mercer Island, WA
EstimateLowTypicalHighBasisChecked
US national range$518$1,347$2,193Per panel, installed; typical range of customer-reported jobs (HomeAdvisor)October 2026

Electrical panel upgrade cost by type or size

US national figures in USD, as published by each source.

Electrical panel upgrade cost by type or size
Type or sizePrice (USD)Source
100-amp panel$800 to $1,500HomeAdvisor
200-amp panel$1,300 to $2,000HomeAdvisor
400-amp panel$2,000 to $4,000HomeAdvisor

What drives the cost of an electrical panel upgrade

  1. Amperage

    Most homes need 100 to 200 amps; 400-amp service costs the most.

  2. Replace or relocate

    Moving a panel outdoors costs $1,500 to $4,000.

  3. Old fuse box or recalled panels

    Replacing a fuse box costs $1,500 to $4,500; Federal Pacific or Zinsco panels $1,500 to $4,000.

  4. Wiring age and circuits

    Older wiring and more circuits to move add labor.

  5. Drywall repair

    Patching around the panel runs about $1.50 to $3 per sq ft.

Permits and what's included in Mercer Island

Permit note

A permit is needed in most places, and the utility may need to disconnect service. Budget about $150 to $300 for permits and drywall repairs.

Rules are set locally; confirm with Mercer Island’s building department.

What’s usually included

  • The new panel and breakers
  • Labor to move circuits to the new panel
  • Coordination of the inspection

Scopes vary. Get the scope in writing on every quote.

Get electrical panel upgrade quotes in Mercer Island

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Top-ranked electricians in Mercer Island

The top 3 of 574 electricians we rank for Mercer Island, WA, by CR Score. Paid placement never changes rank.

  1. #1
    As You Wish Electric
    CR Score 664.9from 2,883 Google reviews
  2. #2
    Eco Electric, Plumbing, Heating and Air
    CR Score 624.9from 2,101 Google reviews
  3. #3
    New Generation Electric
    CR Score 615.0from 79 Google reviews

See all ranked electricians in Mercer Island

How to check an electrician's license in Washington

In Washington, Washington State Department of Labor & Industries licenses Electrical contractor license and electrician certificates.

  1. Search the business name or license number on the Washington State Department of Labor & Industries license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. Ask for proof of insurance before work starts.

No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.

Guide checked October 2026. How we verify licenses

Electrical panel upgrade cost in Mercer Island: questions

How much does an electrical panel upgrade cost in Mercer Island, WA?

An electrical panel upgrade costs $518 to $2,193 nationally, typical $1,347. We have no documented price index for Mercer Island for this job, so this is the US national range from HomeAdvisor, checked October 2026.

Do I need a permit for an electrical panel upgrade in Mercer Island?

A permit is needed in most places, and the utility may need to disconnect service. Budget about $150 to $300 for permits and drywall repairs. Rules are set locally, so confirm with Mercer Island’s building department.

What affects the cost of an electrical panel upgrade?

Amperage: most homes need 100 to 200 amps; 400-amp service costs the most. Replace or relocate: moving a panel outdoors costs $1,500 to $4,000. Old fuse box or recalled panels: replacing a fuse box costs $1,500 to $4,500; Federal Pacific or Zinsco panels $1,500 to $4,000. Wiring age and circuits: older wiring and more circuits to move add labor.

How many electricians serve Mercer Island?

We rank 574 electricians for Mercer Island, WA by CR Score. Get at least three written quotes for the same scope.

What is usually included in the price?

The new panel and breakers; Labor to move circuits to the new panel; Coordination of the inspection. Always get the scope in writing on the quote.

Sources

Checked October 2026. Figures are estimates, not quotes.

  1. HomeAdvisor: Electrical panel upgrade cost · page updated June 17, 2026 · checked October 2026Primary source. Used for: Low, typical and high; prices by amperage; drivers; permit.
These are published estimates, checked October 2026. They are not quotes. Typical range shown: $518 to $2,193. Editorial policy

Related pages

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