Independent and unbiased 2026 pricing data
HouseProjectCalc

Systems

How Much Does It Cost to Rewire a House?

What affects the cost

Rewiring cost depends on size, access, and scope:

  • Home square footage and number of circuits
  • Whether walls are open (during a remodel) or finished
  • Panel and service upgrade (100A to 200A)
  • Old knob-and-tube or aluminum wiring removal

Why access matters most

Running new wire is far cheaper when walls are open during a remodel. In a finished home, electricians must fish wire through walls and patch afterward, which adds significant labor.

Estimate it yourself

Tackling this project yourself?

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Generac Guardian 10kW Home Standby Generator with 100 A
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Generac Guardian 10kW standby with 100A transfer switch

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VEVOR Manual Transfer
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Prewired 50A manual transfer switch for safe backup power

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Waterproof cover protects a standby or portable unit

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Westinghouse 12500 Watt Dual Fuel Home Backup Portable
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Westinghouse dual-fuel portable as a budget backup option

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Frequently asked questions

When does a house need rewiring?

Signs include knob-and-tube or aluminum wiring, frequent breaker trips, two-prong outlets, flickering lights, and a panel under 100 amps. Homes over 40 years old that have never been updated are common candidates.

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