Knob & Tube Wiring Insurance in Los Angeles

If you just bought — or are trying to insure — an older home in Pasadena, Highland Park, or anywhere across Los Angeles, you may have run into a frustrating surprise: your insurance carrier balks the moment it sees knob and tube wiring. This guide explains why insurers treat it as a red flag, what your options are, and how to get your policy approved.

What Is Knob and Tube Wiring?

Knob and tube (K&T) wiring is an early electrical method used in homes built roughly before 1950. It runs single insulated copper wires through ceramic knobs and tubes, with no grounding conductor. Plenty of Southern California bungalows and Craftsman homes still have original K&T hidden in the attic or walls. It was well-built for its era, but it does not meet modern safety expectations — and that is exactly why knob and tube wiring insurance has become such a common headache.

Why Insurance Companies Flag Knob and Tube Wiring

Carriers are not being difficult for no reason. K&T raises real underwriting concerns:

• No ground wire — modern appliances and surge protection rely on grounding that K&T simply does not provide.
• Brittle insulation — century-old rubber and cloth insulation cracks and crumbles, exposing bare conductors.
• Unsafe modifications — decades of DIY splices, junction-box-free connections, and taps overload the original circuits.
• Buried in insulation — K&T was designed to dissipate heat in open air; blown-in attic insulation traps that heat and creates a fire risk.
• Limited capacity — two-prong outlets and few circuits cannot handle today's electrical loads.

The result: many insurers refuse new policies, non-renew existing ones, or demand full replacement before they will write coverage.

How to Get a Los Angeles Home Insured

You generally have a few paths forward, depending on how much active K&T remains and what your carrier requires.

1. Start with a professional inspection

Before you can plan anything, you need to know how much live K&T is actually in the home. A licensed electrician performs a knob and tube wiring inspection, traces which circuits are still energized, and documents the condition. Many carriers will accept a signed inspection report showing the wiring is safe or has been remediated. If you are mid-purchase, pair this with a full electrical evaluation so there are no surprises after closing.

2. Partial vs. full replacement

Not every home needs a gut rewire. Sometimes only a few remaining K&T runs need to be replaced with modern grounded Romex. Other homes require a whole-home rewire plus a panel upgrade to bring service up to current capacity. A qualified electrician will tell you honestly which one your situation calls for.

Rewiring Cost and Permits in Los Angeles

Prices vary widely with home size, access, wall finishes, and how much K&T remains. Treat these as realistic ranges to verify with a site visit, not guaranteed quotes:

• Targeted K&T removal (a few circuits): often $2,000–$6,000.
• Whole-home rewire (typical single-family): commonly $8,000–$20,000+ depending on square footage and complexity.
• Panel upgrade if required: frequently $2,500–$5,000 on its own.

In the City and County of Los Angeles, rewiring requires an electrical permit and inspection. That permit paperwork is also what many insurers want to see as proof the work was done to code. Always confirm current rebates and any SCE incentives, as programs change.

How 911 Construction & Electric Can Help

As an EVITP-certified, licensed C-10 contractor serving Pasadena, Burbank, Glendale, Altadena, and the greater LA area, we inspect K&T wiring, provide the documentation insurers ask for, and handle knob and tube wiring replacement and permitting from start to finish. Whether you need a partial fix to satisfy an underwriter or a complete rewire, we keep it code-compliant and inspection-ready.

Frequently Asked Questions

Does homeowners insurance cover knob and tube wiring?

Some carriers will, but many will not — or they charge higher premiums and require an inspection. A growing number refuse to write new policies on homes with active K&T until it is removed or certified safe.

Is knob and tube wiring safe?

Intact, unmodified K&T in open air can operate for years, but age, brittle insulation, ungrounded circuits, and decades of amateur modifications make it far riskier than modern wiring. That is why insurers and inspectors treat it cautiously.

Do I have to replace all of it to get insured?

Not always. If only a small amount of live K&T remains, targeted replacement plus an inspection report may satisfy your carrier. Homes with extensive active K&T usually need a full rewire.

Will an inspection help my insurance application?

Yes. A documented inspection from a licensed electrician — and permitted repairs — gives underwriters the proof they need and can be the difference between approval and denial.

How long does rewiring take?

A typical single-family rewire runs a few days to about two weeks depending on size, access, and finishes. We schedule around inspections so you can hand your insurer the paperwork quickly.

911 Construction & Electric Inc. is licensed, bonded, and insured (CA Lic. #1027421), proudly serving Los Angeles and nearby cities. If knob and tube wiring is standing between you and an insurance policy, request a free estimate or call us at 747-255-8595 — we'll get your home safe, code-compliant, and insurable.