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Do you have to disclose knob and tube wiring when selling in Ohio?

Ohio's form doesn't name knob and tube. It asks what you know about electrical problems, and what you knew is the part that matters.

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The short answer

Ohio's Residential Property Disclosure Form, required under Ohio Revised Code 5302.30, doesn't name knob and tube. It asks whether you know of past or current problems or defects with the electrical system, and about repairs in the past five years. If you know of K&T problems, that question reaches them; your attorney can judge the rest.

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What will the Ohio form ask you about your wiring?

If you’re selling most kinds of home in Ohio, you fill in the state’s Residential Property Disclosure Form under Ohio Revised Code 5302.30. So do you have to disclose knob and tube in Ohio? Section G, Mechanical Systems, asks about the electrical system directly.

At Conflux Cincinnati Knob and Tube we assess and replace K&T for sellers and buyers across Cincinnati and Hamilton County. This guide explains the form’s electrical question. It isn’t legal advice, and an attorney should answer anything about your duty in a specific sale.

What the form asks What that means for you with K&T
“Do you know of any previous or current problems or defects with the following existing mechanical systems?” It turns on what you know about problems, not on the wiring’s age or type
Electrical: Yes, No or N/A One line covers the whole electrical system
A description of repairs in the past five years K&T replacement or disconnection in that window is a repair to describe

The Ohio Department of Commerce, Division of Real Estate, issued the form in its current shape in June 2022, under Ohio Administrative Code 1301:5-6-10.

Does the form actually say “knob and tube”?

No. The form never uses those words. It asks about problems and defects you know of, so the real question for you is whether what you know about your wiring amounts to a problem or defect.

That depends on the facts and on the law. A few situations make the answer clearer than others:

  • Someone told you it’s a problem. An electrician’s report, an insurer’s letter or a past buyer’s inspection naming K&T as a hazard is knowledge of a problem.
  • You know of symptoms. Fuses that keep blowing, a warm outlet or a burning smell are problems whatever wiring causes them.
  • You know it’s there and nothing more. Whether intact K&T by itself is a “defect” is the judgment to make with an attorney.

What counts as “knowing”?

Usually, paper. If you’ve read a report or letter that names the wiring, you know what it says, and the form’s question about known problems reaches it.

Where it came from What it tells you
A home inspection from when you bought What the inspector saw then, and what they recommended
An insurer’s underwriting letter That the carrier treats your wiring as an issue
An electrician’s assessment Which circuits are live, dead or damaged
A buyer’s inspection during this sale What this buyer found, which you now know
Your own repairs What was replaced or disconnected, and when

Keep these in one folder. Our paperwork guide shows how the same records serve an insurer, and they serve a buyer the same way.

How do you answer the five-year repairs question?

Briefly and in a way a buyer can check. The form asks you to describe repairs in the past five years, and K&T replacement, disconnecting old runs or a panel change in that window belongs there.

Say what was replaced, which circuits, whether any K&T remains, and the permit. Compare two versions:

  • Vague: “Electrical updated.”
  • Checkable: “Six K&T circuits replaced and two disconnected at both ends, IBI permit final on file; no active K&T remains.”

You can only write the second if the work and the records back it up, which is why the removal record and the permit matter.

What will the buyer do with your answer?

Look further. Buyers rarely stop at the form. Their inspector looks in the basement and attic, and K&T usually goes in the report as a finding. From there, the buyer’s lender and insurer become part of your sale.

Clipboard, flashlight and voltage tester laid out on a workbench in an older Cincinnati basement
Clipboard, flashlight and tester on a basement workbench: what an inspector notes down here becomes what the buyer asks the seller about.

What are your options as a seller?

Three broad paths. None of them removes the disclosure question for problems you already know about, but each changes what your buyer faces.

Path What it gives the buyer What it asks of you
Assess and disclose A circuit list showing what’s live, dead or damaged A visit for the free assessment and a clear answer on the form
Assess and offer a credit A written scope the buyer can price A negotiation over the number
Replace before listing A house without active K&T, with records Time, money and open walls before the sale

Our guide on home value covers what replacement does and doesn’t change for a sale.

Buying? How should you read the seller’s form?

As what the seller says they knew, not what’s in the walls. A “No” on the electrical line can sit alongside live K&T, because K&T often hides behind updated outlets and a newer panel.

Read the form alongside your own inspection, and ask the seller for any records behind the five-year repairs answer:

  • The IBI permit number and final for any electrical work
  • Any circuit map or panel directory from an electrician
  • Insurer letters about the wiring, if the seller will share them

If the records are thin, an assessment inside your inspection period fills the gap. Our knob and tube inspection page describes what it covers, and identifying K&T explains what you can safely look for yourself.

What if the house is in Kentucky?

Then Kentucky’s rules apply, not Ohio’s. The Ohio form and Ohio Revised Code 5302.30 don’t cover a house in Covington or Newport, so ask your Kentucky agent which disclosure the sale uses.

What should you do before you fill in the form?

Find out what you have. On a knob and tube inspection we trace each circuit and give you a written list, which makes the form easier to answer accurately and gives buyers the same facts.

To arrange one before you list, call (513) 496-2715. Our guide on whether K&T is illegal in Ohio covers the code side of the same question.

Questions about this guide

If I had the K&T disconnected years ago, what do I write?

Say what you know and what was done, in plain words, and keep the record that backs it up. If the work falls inside the form's five-year window, it belongs in the repairs description. A disconnection record with photos and a permit final lets a buyer check your statement instead of taking it on trust.

The buyer's inspector found K&T I didn't know about. Have I done something wrong?

The form asks what you know. Wiring hidden in walls that you had no reason to know about is a different situation from a problem someone told you about. Once the report reaches you, though, you know, so talk to your agent or attorney before you answer anything further in writing.

Should I replace knob and tube before listing?

Sometimes it's worth it; sometimes a scope and a price serve the sale better. Replacement takes the insurance and lending questions away for buyers, but it costs time and money. A written scope lets buyers price the work and can support a credit instead. Your market and your house decide.

Want this answered for your house?

We trace the circuits to show you what is still live and what the work would involve.

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