Find out electrical rewiring costs for whole house in 2026. Signs you need rewiring and safety guide. Free rewire cost guide.
Whole house rewiring costs $8,000-$20,000 for most residential homes — one of the most disruptive and expensive home improvement projects. However outdated wiring is a serious safety hazard — electrical fires cause 51,000 house fires annually in the US. Knob-and-tube wiring (pre-1940s) and aluminum wiring (1960s-70s) are the most common situations requiring full rewiring.
Cost ranges by home size: Small home under 1,000 sq ft: $6,000-$10,000. Average home 1,500-2,000 sq ft: $10,000-$16,000. Large home 2,500+ sq ft: $14,000-$22,000. Two-story vs single-story: two-story adds 10-20% to cost. Panel upgrade included: $1,500-$3,000 additional if 200-amp upgrade needed. Drywall repair after running wire: $1,500-$4,000 additional unless walls opened during other renovation.
Electrical warning signs: Knob-and-tube wiring visible in attic or basement: insurance companies often require replacement. Aluminum wiring: fire hazard at connections without special outlets and treatment. Frequently tripping circuit breakers. Burning smell from outlets or panel. Flickering or dimming lights. Two-prong outlets throughout home (no ground). Fuse box rather than breaker panel. Any of these: get licensed electrician evaluation immediately.
Whole house rewire timeline: Small home: 3-5 days. Average home: 5-10 days. Large home: 7-14 days. Can you live in home: partially — power turned off to sections being worked, plan for temporary disruption. Drywall repair after: adds 3-7 days if walls were opened. Inspection: required at rough-in and final — adds 1-3 days for inspector scheduling.
Insurance and rewiring: Damage from electrical fire: covered (the resulting damage). The rewiring itself: NOT covered — maintenance responsibility. Insurance implication: many insurers will not insure or will surcharge homes with knob-and-tube or aluminum wiring. Getting insurance: some insurers require rewire completion before coverage. Reducing insurance cost: rewired home often qualifies for lower rates — partial offset to rewiring cost over time.
DIY house rewiring: Generally NOT recommended or legal without licensed electrician. Most states: require licensed electrician for rewiring work. Homeowner exceptions: some states allow homeowners to wire their own primary residence with permit. Even where legal: extremely complex work requiring deep electrical knowledge. Safety risk: errors cause fires, electrocution. Permit and inspection: always required — protects you and future buyers.
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