Cost to Rewire a House in 2026: Full Price Breakdown
Rewiring a house costs $8,000 to $20,000 or more, averaging $3 to $8 per square foot. A small 1,000 sq ft home runs $4,000–$10,000, a typical 2,000 sq ft home costs $8,000–$18,000, and large or hard-to-access homes can exceed $26,000. It’s one of the biggest electrical jobs — and often unavoidable for homes with knob-and-tube or aluminum wiring.
How Much Does It Cost to Rewire a House by Size?
| Home Size | Estimated Cost |
|---|---|
| 1,000 sq ft | $4,000 – $10,000 |
| 1,500 sq ft | $6,000 – $14,000 |
| 2,000 sq ft | $8,000 – $18,000 |
| 2,500 sq ft | $10,000 – $22,000 |
| 3,000 sq ft | $12,000 – $26,000 |
Where these numbers come from: Rewiring is labor-dominant — 60–80% of the bill is electrician hours. Pricing is anchored to the BLS median electrician wage of $34.37/hour (May 2025) with a 2.5–3.5× contractor overhead multiplier, plus copper wire, boxes, devices, permits, and wall patching. A full rewire takes a two-person crew roughly 3–10 working days. See electrician cost for how hourly rates break down.
Costs include new wiring, labor, permits, and basic patching. A panel replacement ($1,300–$4,000) is usually done at the same time, since old wiring almost always pairs with an old panel.
Why Do Knob-and-Tube and Aluminum Wiring Force a Rewire?
These two wiring types account for the majority of full rewires in the U.S.:
Knob-and-tube (pre-1950 homes). Ceramic knobs and tubes carry ungrounded conductors with rubberized cloth insulation that becomes brittle with age. There’s no ground wire, no safe way to add GFCI protection at the wiring level, and the design can’t legally be buried in insulation — a direct conflict with modern energy retrofits. The National Fire Protection Association (NFPA) attributes tens of thousands of U.S. home fires per year to electrical distribution and wiring, with aging wiring a recurring factor.
Aluminum branch wiring (roughly 1965–1975). During a 1960s–70s copper shortage, millions of homes were wired with aluminum. Aluminum expands and contracts more than copper, loosening connections at outlets and switches over time — creating high-resistance hot spots. The Electrical Safety Foundation International (ESFI) flags aluminum branch-circuit connections as a well-documented fire hazard; homes wired with it are significantly more likely to have fire-hazard-level connection conditions than copper-wired homes.
The insurance problem is now the forcing function. Insurance companies increasingly refuse to write or renew policies on homes with active knob-and-tube or aluminum branch wiring, or impose steep surcharges and remediation deadlines. For many owners of 1960s–70s homes, the rewire decision is made by their insurer, not their electrician.
Partial Rewire vs. Whole-House Rewire — Which Do You Need?
- Whole-house rewire ($8,000–$26,000+): Every circuit replaced, new panel, new devices. Required when knob-and-tube or aluminum runs throughout, or when insurance demands full remediation.
- Partial rewire ($2,000–$8,000): Replace only the worst circuits — kitchens, bathrooms, bedrooms — or only the accessible runs. A reasonable bridge if budget is tight, but get the unsafe circuits done first.
- Aluminum remediation without rewiring ($1,500–$4,000): For aluminum wiring specifically, installing approved copper pigtails (COPALUM or AlumiConn connectors) at every termination is a recognized alternative to full replacement. Some insurers accept it; some don’t — ask yours before choosing this route.
See when to rewire a house for a deeper decision framework.
What Does the Rewiring Process Actually Involve?
The question everyone asks: do they tear open all my walls? Mostly no. Here’s the real sequence:
- Assessment and load plan (day 1): The electrician maps existing circuits and designs the new layout, then pulls the permit.
- Fishing new cable (days 2–6): Crews run new wire through attics, basements, and crawl spaces, then “fish” it down inside wall cavities to each outlet and switch. Strategic access holes — typically 4–8 inch openings near boxes and at top plates — are cut where fishing isn’t possible.
- New panel and terminations: Circuits land in a new or updated panel; old wiring is disconnected and abandoned in place or removed where accessible.
- Inspection: Rough and final municipal inspections verify National Electrical Code compliance.
- Patching and paint: Access holes get patched. Basic patching is usually in the quote; skim-coating and painting often isn’t — confirm in writing.
Can You Live in the House During a Rewire?
Usually yes. Crews work room by room, killing power only to the area in progress, and restore circuits each evening. Expect:
- Power outages of a few hours per room per day
- Dust, drop cloths, and furniture pulled away from walls
- 3–10 working days total for an occupied home (vacant homes go faster)
Whole-home occupied rewires cost 10–20% more than vacant ones because of the careful sequencing.
What Affects Rewiring Cost?
- Home size and circuit count — more square footage and more devices means more labor
- Accessibility — finished walls, plaster (much harder than drywall), cathedral ceilings, and slab foundations all add hours
- Wall patching scope — plaster repair in particular can add thousands
- Panel upgrade — almost always bundled; see electrical panel replacement cost
- Permits and inspection ($200–$900 for a full rewire)
- Local labor rates — see below
Why Do Old-Home Cities Cost More?
Rewiring quotes in cities with old housing stock — Boston, Philadelphia, parts of New York — routinely come in 20–40% above national averages. Three reasons: plaster-and-lath walls instead of drywall, balloon framing that complicates fishing, and higher metro labor rates on top. If you’re pricing a rewire in one of these markets, check our local guides: electrician cost in Boston, electrician cost in Philadelphia, and electrician cost in New York.
How Can You Save on Rewiring?
- Rewire during a renovation when walls are already open — this can cut labor 30–50%
- Get 3 detailed, itemized quotes and confirm what patching is included
- Prioritize unsafe circuits first if the budget can’t cover everything at once — and watch for warning signs like breakers that keep tripping
- Verify licensing before you sign — here’s how to verify a contractor’s license
- Vet thoroughly with these questions to ask an electrician or start with how to find a good electrician near you
Frequently Asked Questions
How much does it cost to rewire a house? $8,000–$20,000+ on average, or $3–$8 per square foot. Size, wall construction (plaster vs. drywall), and accessibility drive the range.
How long does it take to rewire a house? Typically 3–10 working days. Vacant homes go faster; occupied homes, plaster walls, and large floor plans take longer.
Do I need to rewire knob-and-tube or aluminum wiring? Increasingly, yes — both carry documented fire risks per NFPA and ESFI data, and insurance companies increasingly refuse coverage until they’re remediated. For aluminum, approved copper-pigtail retrofits are sometimes an accepted alternative.
Can I live in my house during rewiring? Usually yes. Crews work room by room and restore power each evening. Expect localized outages, dust, and patching afterward.
Will rewiring destroy my walls? No — most cable is fished through attics, basements, and wall cavities. Expect strategic access holes near boxes rather than fully opened walls; patching is part of the job, but confirm paint and skim-coat scope in your quote.
Sources: U.S. Bureau of Labor Statistics, OEWS — Electricians (May 2025) · National Fire Protection Association (NFPA) · Electrical Safety Foundation International (ESFI)
Last updated: June 2026. National averages for informational purposes; get written quotes from licensed electricians.