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

Replacing knob-and-tube wiring is priced after an on-site inspection with transparent flat-rate pricing, because total cost depends on your home’s layout and the scope of code upgrades needed. The biggest drivers are house size, how easily we can access walls and attics, and whether the electrical panel or circuits must be updated to support modern loads. Knob-and-tube is outdated and often ungrounded; a planned whole-home rewiring brings your system up to current code with minimal disruption, and Fix-it 24/7 handles all permitting and inspections as part of the project. Our licensed electricians complete these projects throughout the Denver metro, including Westminster homes.

Common factors that change price:

• Square footage and number of circuits to replace
• Need for panel upgrades or new dedicated circuits
• Access (attic/crawlspace), plaster/drywall impact, and patching scope
• GFCI/AFCI protection and device replacements required by code

Shut off any suspect circuits and schedule a licensed evaluation before opening walls or disturbing insulation.

Updated: 2026-06-21

Need help in Westminster, CO? Call (720) 577-4266 or book online. "Brandon did a great job today informing me on what happened with our electrical panel. He was able to fix the problem quickly and provide advice for future panel update." — Ashley P.