Knob & Tube Replacement
Knob and tube has no ground, can't touch insulation, and many insurers won't cover it. We replace it, sparing your walls.
Signs your panel or wiring needs attention
- Ceramic knobs and tubes in attic or basement
- Two-prong outlets all over the house
- Your insurer asked about your wiring
- A pre-1950 home, never rewired
How the job goes, start to finish
- Map each knob and tube circuit and its loads
- Route through attic and crawlspace where possible
- Run new grounded circuits; remove or abandon old wire per code
- Patch, inspect, and hand over the insurer letter
How much does knob and tube replacement cost?
| Job | Typical range |
|---|---|
| Knob and tube replacement, whole home | $17,000 to $34,000 |
| 200 amp panel upgrade, if the panel is replaced at the same time | $5,500 to $11,500 |
Before permit and utility fees. Prices updated October 2026.
What moves the price
- Amperage: same as now, 200 amps, or 400 amps
- Separate meter and main, or a combined unit
- Utility rules for the mast, meter socket and service entrance
- How many circuits move or extend to the new panel
- Grounding, bonding and surge protection up to current code
- City permit fees, which vary
Permits for panel and wiring work
Panel and service work needs a permit and a city or county inspection. Meter work also needs a utility disconnect, on the utility's schedule and fees. Each fee is listed separately.
Brands we install
Brand names and logos are trademarks of their owners and are shown to identify the equipment we install and service. Chief Electric installs and services SPAN equipment. Chief Electric is an independent contractor and is not affiliated with these manufacturers.
The offer for this service
Panel and wiring questions
Do you open every wall to replace knob and tube?
No. Most runs go through the attic or crawlspace.
Can I replace knob and tube in phases?
Yes. Many owners start with the kitchen and bedrooms.
Do you charge for the quote?
No. An electrician looks at the job in person and quotes it, free.