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Permitted & inspected

Knob-and-tube, replaced in stages

Pre-war Fort Worth runs on more knob-and-tube than anyone admits. It was fine engineering for 1925 — the problems are insulation, insurance, and eighty years of amateur splices.

(817) 555-0126

After hours — hazards dispatch now ($195, waived for Safety Plan members). Scheduling reopens Monday at 7:30 AM.

Attic with original knob-and-tube on ceramic standoffs beside new NM cable home runs, insulation pulled back
Stage two of four, Arlington Heights bungalow. Ray Osei. The K&T goes dead as each home run lands — the family never left.

What K&T actually is, and when it is actually a hazard

Knob-and-tube is open single conductors on ceramic standoffs — no ground, and designed to shed heat to open air. Original, unmodified K&T is not inherently a fire hazard. Three things change that: blown-in insulation burying conductors that need air, eighty years of taped-over amateur junctions, and fixture boxes carrying 100-watt heat into cloth insulation. Every old Fort Worth attic has at least one of the three — and a Texas attic bakes its wiring at 130°+ four months a year, which is the part the northern guidance never mentions.

The practical pressures are insurance and insulation. Carriers increasingly surcharge or decline K&T homes, and you cannot legally air-seal or insulate over live K&T — which in a 1920s bungalow means the wiring stands between you and every energy upgrade the house wants.

Staged, so you can live there

A full rewire does not have to be a move-out event. Ray Osei stages Arlington Heights and Fairmount bungalows circuit by circuit: kitchen and bedrooms first, K&T isolated and dead as each new home run lands, walls opened surgically and patched. Two to four working days per stage, a permit and inspection record for the whole sequence, and the insurance letter carriers ask for at the end.

What it costs

K&T assessment and staged planThe $189 inspection, credited toward the work$189
Typical bungalow, full staged rewirefrom $134/mo$8,000–$14,000 total · 84 months at 10.11% APR, zero down

Financing through GreenSky. 84 monthly payments at 10.11% APR on approved credit, zero down. The payment shown is rounded up to the whole dollar. No prepayment penalty, no deferred interest.

5 stars.
Two insurers declined our 1926 bungalow over knob and tube. Ray staged the rewire so we never moved out — four stages, three weeks, kids slept at home every night. Insurance letter at the end got us a normal policy.
Dave Ellison, Arlington Heights · May 30, 2026 · Dave Ellison’s review on Yelp

Permits pulled. Inspections passed. On the record.

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