Knob-and-tube wiring and home insurance: what to know
Document active wiring, partial updates and any required work before comparing a proposal.
The short answer
Knob-and-tube wiring calls for an accurate description and a property-specific review. Confirm what remains active through a licensed electrician, document completed updates and ask the insurer for its requirements. No universal acceptance rule applies.
On this page
Confirm what is still in service
Knob-and-tube wiring is an older electrical system that uses separate conductors supported by ceramic knobs and tubes. Visible remnants do not establish whether that wiring is energized. A licensed electrician should determine what is present, its condition and what it serves.
Do not open panels, touch exposed wiring or disturb insulation to prepare an application. Use existing reports and ask a qualified professional to resolve unknowns.
Give the reviewer a precise description
Instead of saying only “old wiring” or “electrical updated,” assemble:
- A report identifying any knob-and-tube wiring still in service and the areas it serves.
- The panel, service and wiring information requested by the insurer.
- The scope and date of completed repairs or rewiring, supported by permits and invoices where available.
- Any recommended work, with a proposed schedule clearly separated from completed work.
A new breaker panel does not establish that concealed wiring was replaced. Likewise, a contractor’s proposal is not proof that the work is finished. The systems documentation guide shows how to record partial updates.
Ask about the actual underwriting requirement
Insurers can evaluate older wiring differently. A proposal may require further inspection or work, impose conditions, or may not be available. Ask which facts or documents the insurer needs and obtain any required scope and deadline in writing.
An electrician’s safety assessment and an insurer’s eligibility decision answer different questions. Neither should be presented as a substitute for the other. Do not rely on a generic statement that knob-and-tube is always acceptable or always uninsurable.
Plan rewiring as a project
If work is proposed, discuss how walls and original finishes will be affected, permits, occupancy and the contractor’s responsibilities. Before substantial work begins, review renovation insurance, including whether the current policy must be changed.
Historic finishes may require specialist repair after access is created. Establish that cost in the project budget; elective rewiring is not automatically a covered insurance claim.
Compare the resulting offer
If an option is available, check the coverage terms, exclusions, deductibles, repair conditions and effective date. Confirm whether any condition applies before binding or after an inspection. Keep evidence of completed work with the policy and provide updates through the requested channel.
If you are responding to a notice, use the exact deadline on it. The nonrenewal guide helps organize the next steps without assuming one insurer’s answer decides the entire market.
Sources
- Inspections: property and four-point inspection information, Citizens Property Insurance Corporation
- Searching for a homeowners insurance policy? Tips to get the most value, National Association of Insurance Commissioners (NAIC)
This page is general information, not legal advice or a coverage decision. Your policy wording and your state's law control.