Knob-and-Tube Wiring Replacement · Marietta, GA
Knob-and-Tube Wiring Replacement in Marietta, GA
Knob-and-tube replacement removes early wiring (about 1880s to 1940s) that runs on ceramic knobs and tubes without a ground, and replaces it with modern grounded cable. It is commonly done before insulating, during renovations, or when an insurer requires it.
- Call now to check electrician availability in your area
- Independent, licensed electricians
- Serving Marietta Square, Whitlock Avenue, Church Street–Cherokee Street and more
Why knob-and-tube wiring replacement comes up in Marietta
Marietta's historic homes along Whitlock Avenue and Kennesaw Avenue and in the Church Street–Cherokee Street district were built from before the Civil War into the early 1900s, and knob-and-tube wiring survives in some of them, often extended during later renovations. Crawl spaces and attics give the electrician routes for new cable. The historic districts' design review covers exterior changes such as new meters or conduit.
Insurers and buyers often ask about old wiring. Inside the city, Marietta Power, the municipal utility, coordinates any service change, and permits come from the City of Marietta's development services.
- Historic homes can have knob-and-tube or cloth wiring, and mid-century homes often have 100 amp panels.
- Marietta's historic homes along Whitlock Avenue and in the Church Street–Cherokee Street district date from before the Civil War to the early 1900s, and some still have knob-and-tube or cloth wiring with circuits added over the decades.
- Permits in Marietta
- Electrical permits inside city limits come from the City of Marietta's development services; Cobb County handles unincorporated areas. Georgia licenses electrical contractors through the State Construction Industry Licensing Board.
- Electric utility
- Marietta Power (city-owned) or Georgia Power / Cobb EMC, depending on address
Signs to look for
- Ceramic knobs and tubes visible in the attic or basement
- Two-prong outlets throughout the house
- An insulation contractor or energy program requiring an assessment
- An insurer asking about wiring type
- Fuses or a small service alongside old wiring
How the work is done
1. Trace active circuits
The electrician identifies which knob-and-tube runs are still live and where they go.
2. Plan the routes
New cable routes are planned through attics, basements and walls to minimize openings.
3. Install new circuits
Grounded cable, boxes and devices are installed and the old wiring is disconnected.
4. Inspect and patch
Rough-in and final inspections are completed, and access holes are patched.
What moves the price in Marietta
Electricians set their own prices. Historic homes can have knob-and-tube or cloth wiring, and mid-century homes often have 100 amp panels.
- How much knob-and-tube is still active
- Plaster versus drywall walls
- Attic and basement access
- Number of floors
- Panel upgrade at the same time
- Wall patching and painting
Knob-and-Tube Wiring Replacement in Marietta: questions
Do I need a permit for knob-and-tube wiring replacement in Marietta?
Usually, yes. Electrical permits inside city limits come from the City of Marietta's development services; Cobb County handles unincorporated areas. Georgia licenses electrical contractors through the State Construction Industry Licensing Board. The electrician normally pulls the permit and schedules the inspection.
Is the utility involved in Marietta?
If the work affects the meter or service, the electrician coordinates with Marietta Power (city-owned) or Georgia Power / Cobb EMC, depending on address, which owns the meter and service drop.
Is knob-and-tube wiring illegal?
Existing knob-and-tube is generally not illegal, but it cannot be extended, and many insurers and lenders treat it as a reason to replace.
Can knob-and-tube be insulated over?
It is not recommended, and many codes and insulation programs prohibit it, because the wiring relies on open air to cool.
How do I know if mine is still live?
An electrician can test it. Many homes have a mix of active and abandoned knob-and-tube.
How long does replacement take?
From a few days for a small home with good access to a few weeks for larger plaster-walled homes.
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