Can You Sell a Fresno House With Knob-and-Tube Wiring?

Yes, you can legally sell a Fresno house that still has knob-and-tube wiring — no California rule says it has to be ripped out before closing. The catch is practical, not legal: many insurers will not cover it, and a buyer who cannot get insurance usually cannot get a loan. Here is what the rules actually say, where the debate sits, and when a cash sale makes sense for a Fresno, California homeowner with an older house.

Does California require you to remove knob-and-tube wiring before you sell?

No. As of October 2026, the 2025 California Electrical Code, which the state’s Building Standards Commission published July 1, 2025 with an effective date of January 1, 2026, prohibits concealed knob-and-tube wiring in wall, ceiling and attic spaces insulated with loose, rolled or foamed-in-place material that surrounds the conductors, unless a licensed electrician certifies the wiring is in good condition. That is a rule about insulating over old wiring, not a sale-day removal order. A City of Berkeley form citing that code section shows the usual exception: a licensed electrician’s good-condition certification, warning signs in English and Spanish, and a permit inspection (form last revised March 25, 2026). The viral claim that “you have to rewire before you can list” is a market reality for some buyers, not a statute.

Is knob-and-tube wiring actually dangerous, or is the fear overblown?

The mainstream insurance-market view and the home-inspector view disagree, and it helps to see why. In a March 13, 2025 ABC7 report, a broker said applicants who disclose it will likely be declined, and an agent said buyers who cannot find coverage may be pushed to the California FAIR Plan to get a mortgage approved. The same report said San Francisco’s fire department had not seen a trend of fires traced to it, and an electrician in the story called the wiring safe.

The skeptical camp, such as veteran inspectors at Carson Dunlop, argues the wiring is not inherently dangerous when left alone; the trouble comes from later fuse upgrades and sloppy taped splices. Both can be true at once: the wire may be fine in your walls, but an underwriter prices the unknown. The insurance question, not the physics, decides whether your sale closes. (We cover the coverage side in our insurance non-renewal guide.)

What does knob-and-tube wiring mean for selling a house in Fresno?

Fresno has plenty of pre-1950 houses in the Tower District, Downtown and parts of Southeast Fresno, so this comes up. The specific disqualifier: if a buyer’s insurer will not bind a policy, the buyer’s lender will not fund, so the pool of owner-occupant buyers shrinks to people who can pay cash or accept FAIR Plan coverage. Any rewiring also needs a permit; the City of Fresno Building Permit Center cites California Building Code section 105.1, which requires a permit to replace an electrical system. That adds weeks before you can list.

Here is a worked example, not a quote and not a Big Buys Houses result. On a $340,000 Fresno house at a 5.5% agent fee, with an assumed $15,000 rewire and 3 months of carrying costs at $1,800 a month:

• Retail path: $340,000 − $18,700 commission − $15,000 rewire − $5,400 carrying costs = $300,900, plus the risk a buyer still falls through.
• Cash path (hypothetical offer): $265,000, with no repairs, no commission and no carrying months = $265,000.

In this example retail wins by about $35,900 — if you can fund the rewire and wait about three months. If you cannot front the money or the timeline is short, a cash home buyer in Fresno avoids the insurance problem entirely, and you can get a cash offer to compare real numbers. For the bigger picture, see our guide to selling a house as-is in Fresno.

Should you rewire first or sell the house as-is?

If you have time and cash, and the house is otherwise in good shape: get a licensed electrician’s evaluation and a quote, then compare listing after a permitted rewire against your likely net. This is usually the higher-dollar route.

If you are short on cash, facing a deadline, or the house needs other work: selling as-is to a cash buyer lets you skip the permit, the contractor and the insurance hurdle. The same logic applies in nearby cities like Clovis. This is general information, not legal advice.

Frequently asked questions

Do I have to tell buyers about knob-and-tube wiring in Fresno?

Generally, California sellers must disclose known material defects, so it is wise to disclose it. Ask a real estate attorney or your agent how that applies to your house.

Can a buyer get a loan on a Fresno house with knob-and-tube wiring?

Sometimes, but lenders require homeowners insurance. If standard insurers decline, the buyer may have to use the California FAIR Plan, which is why some deals stall.

Does rewiring a Fresno house require a permit?

Yes. The City of Fresno says California Building Code section 105.1 requires a permit to replace an electrical system. Unpermitted work can create a second problem at sale.

Will Big Buys Houses buy a Fresno house with knob-and-tube wiring?

Big Buys Houses buys houses as-is in Fresno, California, so wiring type is not a barrier to requesting an offer.

What do you think?

Have you run into an insurance problem with older wiring in Fresno? Tell us what happened, or reach out for a no-obligation offer.