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Metro Detroit • 268 electricians profiles
Knob and Tube Wiring Replacement in Metro Detroit
Old knob and tube wiring? Compare verified electricians to rewire safely. Free quotes.
5Featured pros
268Electricians profiles
6Metro counties
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Featured knob and tube wiring replacement pros
Top Knob and Tube Wiring Replacement Pros in Metro Detroit
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Consumer Services Electric
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Motor City Electric
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Next Gen Electric
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Noonan Electrical Services
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Before you hire
Knob and tube wiring in older Metro Detroit homes
Homes built before about 1940 may still have knob and tube wiring: single wires on ceramic knobs with no ground wire. After decades, the insulation gets brittle, and it was never meant to be buried in attic insulation. Many insurers will not cover homes with active knob and tube.
Rewiring replaces it with modern grounded wiring, room by room, with small wall openings. See whole home rewiring and service upgrades.
What a proper job includes
- Inspection to find active knob and tube circuits
- New grounded circuits to outlets, switches and lights
- Grounded outlets and GFCI or AFCI protection where required
- Panel upgrade if needed
- Wall openings closed; patching options
- Permit and inspection
What drives the price
- Size of the home and number of circuits
- Plaster walls and access
- Panel or service upgrade
- Patching and painting
Rebuild Detroit does not publish price ranges. Get written quotes for the same scope and compare.
Permits and licensing in Michigan
Electrical work in Michigan is done by a licensed electrical contractor, and most installs and upgrades need an electrical permit and inspection. A homeowner in a single-family home may pull a permit for their own work. Check the license on the LARA lookup. In Detroit, permits go through BSEED; service upgrades also need your utility, usually DTE, to reconnect power.
Verify: LARA license lookup Michigan electrical permit information Detroit BSEED How We Vet
How to compare quotes
- Ask how they will find all active knob and tube.
- Ask how much wall opening is needed.
- Confirm permit and patching scope.
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Common questions
Knob and Tube Wiring Replacement in Detroit: FAQ
Not always on its own, but age, no ground, and insulation around it raise fire risk. Many insurers require replacement.
Usually yes. Power is off in parts of the house during the day.
Often several days for a typical home.
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