How much does it cost to replace knob and tube wiring?

The cost to replace knob-and-tube wiring is confirmed after an on-site assessment because pricing varies with the rewiring scope and any required code upgrades. The biggest driver is how extensive the home’s circuits need rebuilding and how reachable the existing wire paths are. Our licensed, in-house electricians serve the Newtonville area and coordinate permits and inspections with the local building department. For urgent hazards, same-day electrical service is available.

Here are the main cost drivers:

• Square footage and the number of circuits to rebuild.
• Access conditions (open attic/basement vs. closed plaster or masonry walls).
• Electrical panel/service capacity and any needed panel upgrade.
• Permit and inspection fees, plus any wall patching by others.

If you notice heat, burning odors, or brittle cloth insulation on wiring, shut off the affected circuit and call an electrician immediately.

Updated: 2026-04-06

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