The short answer: “knob-and-tube wiring observed” on an inspection report is a finding, not a verdict. It tells you the wiring type is present somewhere visible; it does not tell you how much is live, what condition it’s in, or what it will cost to deal with. Three parties will react to it — your insurer, your lender, and the seller — and they react differently. Get an electrician’s evaluation before the inspection contingency expires. Ask your insurance agent for the carrier’s written position. Then negotiate on the scope the electrician found, not on the word “knob-and-tube.”
What the inspection report does and doesn’t tell you
Under InterNACHI’s inspection standard, an inspector describes observed wiring; that limited visual inspection is not a circuit-by-circuit electrical evaluation. Check the standard and exclusions in your own inspection agreement. (InterNACHI Standards of Practice, §3.7) InterNACHI’s own guidance to inspectors is to “always disclaim knob-and-tube wiring” and recommend evaluation by an electrician. (InterNACHI)
So a report that says knob-and-tube wiring was observed in the basement and attic; recommend evaluation by a licensed electrician is consistent with any of these:
- The house was fully rewired in 1995 and the dead knob-and-tube was left on the joists.
- The kitchen and bath were rewired; second-floor lighting and some first-floor receptacles are still original and energized.
- Nearly everything is original, with modern cable spliced on in several places, and attic runs buried under insulation.
Those scenarios require different investigations and may lead to different scopes. The observation alone does not distinguish them. An electrician’s evaluation can narrow the question by tracing circuits and examining accessible equipment, but concealed routes or unsafe access may require further work. What it should produce is a short written statement: which circuits are on knob-and-tube and energized, their condition, any splices or insulation contact, the panel’s condition and capacity, and a recommended scope. That document is what you negotiate with and what your insurer may ask for.
For what the evaluation looks for and the partial-versus-whole decision, see how much of the house needs rewiring in the complete guide.
What insurers do
There is no single industry rule. Possible responses include declining, charging more, requesting an inspection or requiring replacement by a deadline. The only way to know yours is to ask the agent for the carrier’s written underwriting position before you remove contingencies.
Published positions:
- Progressive: “Some providers may offer you a policy, while many will decline to offer a policy.” Those that will “may charge a higher premium” and “may also ask for an inspection report that details the condition of the wiring before providing coverage.” (Progressive)
- Allstate: knob-and-tube “is considered so risky that many insurance companies won’t cover a home with this type of wiring”; electrical deficiencies can mean “higher home insurance rates or even denial of coverage.” (Allstate)
- A 2019 Minneapolis newspaper survey of carriers found most said no outright, a few would write it at a surcharge or after their own inspection — and described the market as “a moving target.” (Star Tribune, 2019) Carriers’ positions change; that survey is dated and from another market, so treat it as a pattern, not a rule.
If the standard market declines, the states’ insurers of last resort have their own rules:
- Missouri FAIR Plan (Missouri Property Insurance Placement Facility) “inspects all new properties” and lists among unacceptable risks “unsafe electric wiring, such as: Exposed or frayed wires; Improperly spliced wires; Overloaded circuits; Fuseboxes and certain circuit breaker boxes.” Coverage is actual-cash-value, named-peril, with no liability. The stated concerns involve condition, but absence of a wiring-type ban from this list does not establish eligibility. Ask the Plan for a decision on the actual property. (Missouri FAIR Plan)
- Kansas FAIR Plan (Kansas All-Industry Placement Facility) publishes no wiring-specific eligibility rule in its application materials; it does inspect for underwriting and requires disclosure of code violations and unrepaired damage. Ask the plan directly. (Kansas Insurance Department consumer page: insurance.kansas.gov)
Practical sequence for a buyer:
- Before the inspection contingency ends, send the electrician’s evaluation to your agent and ask for the carrier’s position in writing: bind as-is, surcharge, inspection letter, or replacement within N days.
- If it’s “replacement within N days,” get a signed contract with a licensed contractor whose completion date beats the deadline — only rely on a replacement contract if the carrier expressly accepts that arrangement.
- If it’s a decline, shop the market through an independent agent before resorting to the FAIR Plan; compare each Plan’s actual coverage, exclusions, deductible, lender acceptability and premium rather than assuming it matches a standard homeowners policy.
What lenders do
An electrical system’s condition and adequacy can affect loan eligibility, but a general handbook cannot promise approval for a house with knob-and-tube. The appraiser’s findings, program requirements, lender conditions and insurance availability must all be resolved for the particular loan.
- FHA. HUD Handbook 4000.1, II.D.3.f.ii, directs appraisers to report inadequate electrical service and observable hazards such as frayed or exposed wiring, and to perform limited operational observations. That is an appraisal requirement, not an electrician’s complete inspection or a guarantee that a lender will accept old wiring. Do not rely on superseded HUD guidance about a 60-amp service to establish eligibility today. (HUD Handbook 4000.1, November 26, 2025 update, printed p. 840)
- Conventional loans sold to Fannie Mae. Its Selling Guide requires deficiencies affecting safety, soundness or structural integrity to be addressed. When the appraiser cannot adequately assess a condition, a qualified professional’s inspection may be needed; the lender determines eligibility and required repair evidence. The guide does not give this particular house a wiring approval. (Fannie Mae B4-1.3-06)
- Insurance and timing. Ask the loan officer and insurance agent separately what must happen before closing. Approval of a repair plan by an insurer does not waive a lender’s repair condition, and a lender’s appraisal does not guarantee insurance availability.
The documents people will ask for
Here is what each party may request, what it is, and who produces it. This is the list to work from whether you’re buying, selling, or refinancing.
| Document | Who asks | What it is | Who produces it |
|---|---|---|---|
| Electrician’s evaluation (sometimes called a certification or inspection letter) | Insurer, buyer, sometimes seller for disclosure | A dated, signed statement from a licensed electrical contractor describing which circuits are knob-and-tube and energized, their condition, splices, insulation contact, panel condition and capacity, and either “no deficiencies observed” or a recommended scope | Licensed electrical contractor |
| Permit record | Insurer, buyer, lender’s appraiser occasionally | The city’s permit number and status for the rewiring work; retrievable from CompassKC (KCMO), the Unified Government Building Inspection office, or the Johnson County city’s portal | Contractor pulls; city issues |
| Final inspection record | Insurer, buyer | The city inspector’s pass on the completed work | City |
| Itemized invoice / scope of completed work | Insurer, buyer | Names the circuits replaced by room; states whether any energized knob-and-tube remains | Contractor |
| Panel directory | Buyer, next electrician | Accurate labels at the panel | Contractor |
| Signed replacement contract with completion date | Insurer (for conditional binding) | The contract itself | Contractor and homeowner |
| Seller’s disclosure | Buyer | The disclosure required by the transaction and applicable law; discuss known wiring findings and prior work with your agent or attorney | Seller |
A note on the word “certification”: there is no standard form. An insurer asking for a “certified” wiring letter generally means a dated, signed letter from a licensed electrician on company letterhead; ask the agent exactly what it must say.
Negotiating the repair
Negotiate on the evaluated scope and the lender’s and insurer’s written requirements. Discuss these three approaches with your real-estate and lending professionals; deadlines and loan rules can limit the choices.
- Seller completes the work before closing, permitted and inspected. This may resolve conditions before closing, but scheduling and verification can take time. Agree on the contractor and scope; require the permit record, final inspection and itemized invoice as closing documents, and have your electrician walk it.
- Price reduction or seller credit, buyer does the work after closing. This gives the buyer responsibility for choosing the contractor and scope, but requires both lender and insurer acceptance of the actual arrangement; seller-credit limits and repair conditions may apply. Get bids before you agree on the number — the published Kansas City figures range from $8,000 to $39,000 for very different jobs (cost guide).
- Partial scope now, the rest later. If the evaluation shows knob-and-tube confined to a few circuits, a partial replacement that removes all wiring identified in the carrier’s condition may satisfy that requirement. Confirm with the agent first; clarify whether the condition means no energized knob-and-tube or physical removal of abandoned material as well. The knob-and-tube replacement page describes how a partial scope is documented.
If you’re the seller: an evaluation before listing can clarify the wiring and identify further investigation or repair needs. Obtain written estimates for any proposed work instead of assuming the inspection itself supplies a complete scope and price.
After the work: what to keep
Keep a folder — paper and scanned — with the permit record, the final inspection, the itemized invoice, the panel directory, the electrician’s lead-safe certification if walls were cut in a pre-1978 house, and any insurer correspondence. It’s what the next buyer’s inspector, the next insurer and the next electrician will want, and it’s what turns “rewired” from a claim into a fact.
Frequently asked questions
The inspector found knob-and-tube only in the basement. Do I still need an electrician?
Yes. Visible basement wiring does not establish the condition of concealed routes or whether every old conductor has been disconnected. Ask for an electrical evaluation and tell the electrician what evidence your insurer or lender requests. Confirm that they accept the proposed documentation.
Will FHA refuse the loan over knob-and-tube?
This guide cannot determine approval. HUD appraisal requirements address condition and adequacy; the lender must evaluate the property and any repair conditions, and insurance must also be acceptable. Ask the lender for a written decision on the actual findings.
Can I close and then rewire?
Only proceed on that basis after your lender and insurer approve the arrangement in writing and you have discussed contract deadlines with your real-estate professional. A planned post-closing rewire does not automatically satisfy an outstanding loan or insurance condition.
Does rewiring raise the home’s value?
Correcting documented electrical deficiencies can address a buyer, insurer or lender concern. These sources do not establish a Kansas City resale premium or a return on rewiring cost. An appraiser or agent can discuss the effect on a particular property and transaction.
Is knob-and-tube a required disclosure in Missouri or Kansas?
Disclosure duties depend on the transaction, applicable law and what the seller knows. Bring the inspection findings, permits and prior-work records to your agent or attorney and ask what your transaction requires. Do not assume an old wiring type is either automatically exempt from disclosure or proof of a defect.
Need a scoped bid? Get a Quote — tell us the address, the inspection report’s electrical section, and any deadline you’re working to. For the full picture of what a rewire involves, start with the complete guide to rewiring an older Kansas City home; the service pages are knob-and-tube replacement and whole-house rewiring.