Whole-Home Rewiring in Tacoma, WA
Knob-and-tube, ungrounded outlets, or an old fuse box? We connect you with licensed Tacoma electricians who rewire older homes safely and to code.
Why Tacoma Homes Need Rewiring
About 26% of Tacoma homes date to before 1940, per NeighborhoodScout. Neighborhoods like the North End, Stadium District, Hilltop, and Eastside are full of them. Many still hide original wiring that was never built for today’s loads.
Old Wiring Types We See Most
| Wiring type | Common in | Main risk |
|---|---|---|
| Knob-and-tube | Late 1800s–1940s homes | No ground wire; brittle insulation; unsafe DIY splices |
| Ungrounded two-prong circuits | Pre-1960s homes | Shock risk; false safety if swapped for 3-prong outlets |
| Cloth-covered cable | 1940s–1960s homes | Insulation cracks and crumbles with age |
| Fuse boxes | Un-updated older homes | Oversized fuses let wires overheat |
Knob-and-Tube Wiring and Your Insurance
Knob-and-tube needs open air to cool. Decades of attic insulation and amateur changes make it risky. Many insurers limit coverage for homes that still have it. The policies they do offer can cost much more. That can stall a home sale.
How Whole-Home Rewiring Works
- Inspection. The electrician maps every circuit and checks the panel.
- Plan and permit. Rewiring needs a permit from Tacoma Power Electrical Inspection.
- Rough-in. Crews fish new grounded cable through walls with small openings.
- Rough-in inspection. An inspector checks wiring before walls close.
- Finish and final. New outlets, switches, and a final inspection.
Most crews rewire room by room. You can usually stay in your home while they work.
Rewiring Cost in Tacoma
Rewiring an existing home costs about $6 to $10 per square foot. Plaster walls, tight attics, and a needed panel upgrade add to the price. Get a written quote that lists the permit. See our Tacoma cost guide.
Rewiring FAQs
Is knob-and-tube wiring safe?
Not by today’s standards. Untouched original wiring may still work. But most systems now have splices or insulation packed around them. An electrician can inspect it and advise you.
How long does rewiring take?
It depends on home size and wall type. Small homes may take a few days. Larger homes with plaster walls take longer, plus inspection time.
Related Tacoma Electrical Services
Worried About Old Wiring?
A licensed electrician can inspect it and give you a clear plan. Calling is free.