Updated July 31, 2026
What the knob & tube ranges cover
The table describes progressively broader knob & tube scopes. Match the proposed work to a category before comparing prices; a low number for a narrower scope is not the same quote.
Included in the planning scope
- Extent and condition assessment: Accessible wiring, affected circuits, visible supports and splices, prior alterations, panel connections, and concealed areas can be documented.
- Circuit-by-circuit replacement: Selected lighting, receptacle, or appliance circuits can be planned around access, use of the space, and project priorities.
- Grounded outlets and modern protection: The rewiring plan can define grounding, device replacement, GFCI or AFCI protection, and circuit organization for the included areas.
- Renovation coordination: Electrical work can be sequenced with demolition, framing, insulation, wall repair, painting, cabinetry, and other planned improvements.
- Panel and capacity review: New circuit layouts may require breaker, panel-space, feeder, grounding, labeling, or service-capacity work to be priced separately.
Confirm separately in writing
- Related circuits, devices, or finish work outside the equipment and wiring named in the replacement scope
- Drywall, paint, masonry, trenching, landscaping, or other finish restoration unless the quote names it
- Permit, inspection, engineering, utility, or equipment fees that are not itemized or expressly included
- Concealed damage or changed conditions discovered after access, unless handled through a written change order
Ask how the first visit is priced
Ask whether an assessment, design, estimate, or dispatch fee applies and whether it is credited toward approved work. A free estimate should not be assumed to include diagnosis, drawings, or permit research.
National planning ranges by scope
Compare the work included in each category before comparing the dollar range.
| Scope | Typical range | What it usually involves |
|---|---|---|
| Small Home | $9,500-$22,000 | Basic rewiring for a small home with minimal wall openings. |
| Medium Home | $19,000-$42,000 | Includes moderate access challenges and permit costs. |
| Large Home | $35,000-$80,000 | Extensive rewiring with significant access issues. |
Costs can vary widely based on the specifics of the job.
What can change the written quote
These items should be addressed for the actual property and proposed scope.
Parts, equipment, and selected options
The quote should identify the devices, equipment, wire, breakers, controls, and allowances it includes. For this service, size of the home and extent of existing knob and tube wiring can change both material and installation scope.
Access, testing, and labor
Diagnostic time, circuit routing, working clearance, height, occupied-space protection, and difficult access can add labor. complexity of accessing current wiring should be described before competing totals are compared.
Permits and inspections
Requirements depend on the project address and scope. Ask who determines whether a permit or inspection applies, who obtains it, and whether the related fee and correction work are included.
Utility or third-party coordination
Most projects stay entirely on customer-owned equipment, but work involving service equipment, interconnection, shutdowns, or metering may add utility steps. The proposal should state whether local permit and inspection fees creates any coordination dependency.
Opening and restoring finished surfaces
Drywall access, patching, paint, masonry, trenching, landscaping, cleanup, and disposal should be listed as included, excluded, or assigned to another trade.
Timing and urgency
Scheduled work, equipment lead time, occupied-home constraints, and requested completion timing can affect labor and availability. Urgent scheduling should be identified rather than assumed.
How to use these planning ranges
The dollar figures are reviewed ElectricianQuotes editorial planning ranges for residential knob & tube in the United States. They organize the three existing service tiers and add a project-specific major category rather than inventing a ceiling for broad or combined work.
Government and recognized safety sources support technical scope, equipment, safety, and labor-market context; they do not establish customer prices. The ranges are not derived from a contractor marketplace, do not represent a local average, and are not a bid.
A reliable comparison starts with the same requested result, site information, equipment assumptions, exclusions, permit and inspection responsibility, restoration scope, and change-order process. How much active knob-and-tube wiring remains, what serves it, and how should replacement be phased?
Compare written quotes on the same terms
A useful comparison covers scope, assumptions, exclusions, and change handling as well as the total.
- The exact knob & tube rewiring scope, including what is being installed, repaired, removed, or reused
- Labor, equipment, devices, wire, breakers, mounting hardware, and other materials listed separately when practical
- How the quote accounts for size of the home and extent of existing knob and tube wiring, complexity of accessing current wiring, and local permit and inspection fees.
- Who is responsible for permits, utility coordination, and required inspections
- Whether drywall access, trenching, patching, painting, cleanup, or disposal is included
- Equipment model numbers, warranty terms, payment schedule, and quote expiration date
- How concealed conditions or requested changes will be documented and approved before extra work begins
Knob & Tube cost questions
How much should I budget for knob & tube rewiring?
Rewiring a home to replace knob and tube wiring can vary in cost depending on several factors. The table on this page separates small home, medium home, and large home to support comparison with the scope closest to the project. Treat the figures as national planning ranges. A written quote based on the home, equipment, access, and local requirements is the reliable project price.
What changes a knob & tube quote the most?
The biggest variables are usually size of the home and extent of existing knob and tube wiring, complexity of accessing current wiring, local permit and inspection fees, and choice of materials and fixtures.. Two projects that sound similar can require different labor, materials, access work, or electrical capacity. Give each electrician the same project details and ask them to identify assumptions so the quotes are easier to compare.
What should a written knob & tube quote include?
Look for a defined scope, labor and material allowances, equipment or device specifications, permit and inspection responsibility, excluded finish work, warranty terms, payment timing, and a process for approving changes. The lowest total is difficult to compare if important work is only described verbally or left as an open allowance.
Can the final knob & tube cost change after work starts?
It can if concealed damage, inaccessible wiring, insufficient panel capacity, utility requirements, or a requested scope change appears after the initial assessment. Ask how change orders are handled. Additional work should be explained and priced in writing before it proceeds whenever the situation allows.
Sources and editorial review
Government and recognized safety sources support the technical scope, equipment, safety, and labor-market context in this guide. They do not establish customer prices; the dollar figures are reviewed ElectricianQuotes planning ranges.
