⚡ Electrical

Home Rewiring — When Is It Necessary?

Knob-and-tube wiring, aluminum branch circuits, and degraded cloth insulation are common in older Spokane homes. Here is how to know if a rewire is warranted.

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What's Covered

  • ✓ Knob-and-tube (pre-1950): no ground, brittle insulation
  • ✓ Aluminum wiring (1965–73): connections loosen, arcing risk
  • ✓ Full rewire or targeted aluminum pigtailing
  • ✓ Attic and crawlspace access minimizes wall damage
  • ✓ Permit + inspection required in all WA and ID jurisdictions

Typical Costs in Spokane

Partial rewire / critical areas$2,500 – $6,000
1,200–1,800 sq ft (good access)$8,000 – $13,000
2,000–2,800 sq ft$12,000 – $18,000
Panel upgrade (often combined)+$1,800 – $3,500

Common Questions

How do I know if my home has knob-and-tube?
Look in the attic for ceramic knobs with individual wires looped around them. Any pre-1950 Spokane home may have some. A licensed electrician can confirm during a free walk.
Do I need to move out during a rewire?
No — most families stay in the home. Power is off during working hours (typically 7am–5pm) each day of the project, which runs 3–10 days depending on home size.
Can I just add grounds to my two-prong outlets?
For standard NM cable without grounds, GFCI protection is an NEC-allowed alternative. For knob-and-tube, simply adding grounds does not address insulation degradation — a full rewire is the appropriate fix.

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