When Should an Older Home Be Rewired?

An older home should be rewired when the existing wiring can no longer safely carry the electrical load the household demands or when the wiring itself has deteriorated to the point where it creates a fire or shock hazard. For many Central Kentucky homes built before 1970, the original wiring was designed for a handful of light fixtures and a few outlets — not heat pumps, EV chargers, and modern kitchens.

What types of old wiring need replacement?

The types most commonly flagged during evaluations in Lexington-area homes include:

• Knob-and-tube wiring — common in pre-1940s homes, ungrounded
• Cloth-insulated wiring — insulation cracks and crumbles with age
• Aluminum branch wiring — prone to loose connections and overheating at outlets
• Undersized circuits carrying appliances they were never designed for

Warning signs your home's wiring is failing

Homeowners often notice symptoms long before a failure:

• Outlets that only accept two-prong plugs
• Lights that flicker when appliances turn on
• Outlets or switches that feel warm or show scorch marks
• Breakers that trip under normal load
• A burning smell from outlets or the panel
• Insurance company flagging the wiring

Does the whole house need rewiring at once?

Not always. Some homes benefit from targeted circuit replacement — updating kitchens, bathrooms, and high-load areas while leaving sound wiring in harder-to-access walls. A whole-home rewiring evaluation determines the most practical scope.

What to do next

If your Lexington-area home has any of the warning signs above, schedule an electrical evaluation or call 859.457.0426. A licensed electrician can assess the wiring and provide a clear scope and price before any work begins.