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Home Rewiring · Oregon
Rewiring replaces old branch-circuit wiring, such as knob-and-tube, ungrounded cloth-insulated cable or 1960s–70s aluminum branch wiring, with modern grounded copper cable. It can be done room by room, and an electrician will tell you which circuits matter most.
Older Portland homes, wildfire-season outages and winter ice storms drive rewiring and generator work.
Across the Pacific, homes deal with mild coast, wildfire seasons inland, and wet winters in the Northwest. Permit offices, utilities and housing stock differ by city, which affects how home rewiring is planned and scheduled. These local guides cover the Oregon cities where we have written specific notes.
Portland has a large stock of early-1900s homes with knob-and-tube wiring, and it usually comes up before an insulation project or a home sale. Electricians commonly recommend replacing active knob-and-tube before walls and attics are insulated, and insurers may ask about it.
Utility: PGE (some areas: Pacific Power)
The Grant, Court-Chemeketa and Fairmount Hill neighborhoods hold many of Salem's homes from the early 1900s, and some still have knob-and-tube or ungrounded wiring alongside later circuits. Rewiring usually comes up during renovation, before insulating walls and attics, or when an insurer asks.
Utility: Portland General Electric (parts of West Salem: Salem Electric)
Early-1900s houses in the Whiteaker, Jefferson Westside and around the University of Oregon sometimes still have knob-and-tube or ungrounded wiring, and many near campus have been rentals for decades, with circuits added as layouts changed. Rewiring usually comes up before insulating walls and attics, during renovations, or when an insurer asks.
Utility: Eugene Water & Electric Board (EWEB)
1. Assessment
Wiring type, condition and circuit layout are documented.
2. Plan and permit
Circuits are prioritized and the work is permitted.
3. Rewire
New cable is fished through walls and ceilings with minimal openings.
4. Inspection and patching
Rough-in and final inspections, then wall openings are closed.
Electricians set their own prices; local permit fees and utility requirements add to these factors.
Permits come from the city or county where the home is. For example: Portland: Electrical permits in Portland are issued by the city's permitting office; Oregon requires licensed electrical contractors. Salem: Electrical permits inside city limits come from the City of Salem's permit application center; Marion and Polk counties handle areas outside the city. Eugene: Electrical permits inside city limits come from the City of Eugene's building and permit services; Springfield and Lane County issue their own.
Portland: PGE (some areas: Pacific Power). Salem: Portland General Electric (parts of West Salem: Salem Electric). Eugene: Eugene Water & Electric Board (EWEB).
No. Many homeowners rewire in phases, starting with kitchens, baths and bedrooms.
Aluminum branch wiring can overheat at connections. Approved repairs (such as rated connectors) or replacement reduce the risk; an electrician can advise which fits.
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