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

Replacing knob-and-tube in CT runs $8,000 to $20,000 for a whole home and $3,000 to $8,000 for a partial or targeted removal. Because knob-and-tube replacement is essentially a rewire, the price tracks home size and access; most whole-home quotes include a new 200-amp panel, permit, and inspection.

Why do I have to replace knob-and-tube wiring?

Knob-and-tube has no ground wire, its insulation becomes brittle with age, and it is unsafe when buried in modern insulation or overloaded by modern appliances. Most CT insurance carriers will not renew or write a policy on a home with active knob-and-tube, so removal is often required to keep coverage.

Do I have to replace all of it at once?

Not always. If only part of the home still has active knob-and-tube, a targeted removal ($3,000 to $8,000) can satisfy an insurer and make the home safe. But if knob-and-tube is throughout, a whole-home rewire is usually more cost-effective than repeated partial visits. We scope exactly what is live before quoting.

Does knob-and-tube removal include a new panel?

Usually. Homes with knob-and-tube often still have a fuse box or a Federal Pacific panel, so we pair the removal with a new 200-amp panel on the same permit and Eversource visit. Bundling is cheaper than separate jobs and gets the whole system to code at once.

Will my insurance company accept the work?

Yes. We pull the town permit, pass inspection, and provide written documentation of the knob-and-tube removal and rewiring that carriers require for renewal. That paperwork is what turns the inspector flag into a closed item.

Guide · Updated June 2026

Knob-and-Tube Replacement Cost in Connecticut (2026)

Replacing knob-and-tube wiring in Connecticut runs $8,000–$20,000 for a whole home, or $3,000–$8,000 for a partial removal. It is essentially a rewire, so price tracks home size and access — and most jobs include a new 200-amp panel. Most of this work is driven by an insurance carrier flagging knob-and-tube at renewal. Here’s the honest breakdown, written by Tyler Faye, a CT-licensed master electrician who removes knob-and-tube across Tolland and Hartford counties.

Insurance Documentation New 200A Panel Permit & Inspection Historic-Home Care

(860) 268-7972

Knob-and-Tube Cost at a Glance

Partial / targeted removal

$3,000 – $8,000

Removing the active knob-and-tube in one area (an attic, an addition, a few circuits) to satisfy an insurer and make the home safe.

Whole-home (small house)

$8,000 – $14,000

A 1,000–1,500 sq ft cape or cottage rewired off knob-and-tube, typically with a new 200-amp panel.

Whole-home (average)

$12,000 – $20,000

A 1,500–2,500 sq ft home — the most common CT job — fully off knob-and-tube and up to current code.

Large / plaster-heavy

$20,000 – $30,000+

Bigger homes with finished plaster walls and historic finishes where access and patching drive cost.

Installed prices in Connecticut. Whole-home removals usually include a new 200-amp panel, permit, and inspection; plaster patching may be separate.

What Drives the Price

How much is still active: Many homes have had partial updates over the years. We trace what is genuinely live vs. abandoned — only the active runs need replacing.
Access: Open attics and basements are quick; knob-and-tube buried in finished plaster walls takes careful fishing and patching.
Whole-home vs. partial: A targeted removal satisfies an insurer for less; full removal costs more but avoids repeat visits if it is everywhere.
Panel condition: Knob-and-tube homes often still have a fuse box or Federal Pacific panel — replacing it is usually bundled in.
Plaster & historic finishes: Preserving original plaster, trim, and millwork adds labor on older homes.

The Insurance Driver

Most knob-and-tube removals we do start with an insurance carrier. At renewal or on a new policy, an inspector flags active knob-and-tube and the homeowner has a deadline to remove it or lose coverage. The fix has to be permitted, inspected, and documented to satisfy the underwriter.

We handle exactly that: scope what is live, remove and rewire to current code, pull the knob-and-tube replacement permit, pass inspection, and provide the written documentation the carrier needs. When the panel is also outdated, we bundle a panel upgrade (see the panel cost guide).

Knob-and-Tube Cost FAQ

How much to remove knob-and-tube from a whole house in CT?+

Typically $8,000–$20,000 depending on size and access, usually including a new 200-amp panel, permit, and inspection. A partial removal runs $3,000–$8,000.

Why won’t my insurer cover knob-and-tube?+

It has no ground, the insulation gets brittle, and it overheats under modern loads or when buried in insulation. Most CT carriers require active knob-and-tube removed to renew. We provide the documentation they need.

Can I remove just part of it?+

Yes — a targeted removal of the active runs can satisfy an insurer and make the home safe. If it is throughout, a whole-home rewire is usually more cost-effective.

Does it come with a new panel?+

Usually — knob-and-tube homes often have a fuse box or Federal Pacific panel, so we bundle a 200-amp panel on the same permit. See fuse box upgrades.

Will you preserve the plaster and trim?+

Yes. We fish through existing cavities and route around historic finishes, keeping access holes minimal and patching planned into the quote.

Get a K&T Removal Quote From TJF Electric

Tyler traces exactly what is live, scopes the removal, and quotes the all-in number with the insurance documentation built in. Free estimates across Willington, Vernon, Ellington, Manchester, Coventry, Storrs, and all Eastern CT.

Call (860) 268-7972