Electrical Safety Checklist for Homes Over 30 Years Old

Age is the reason, not the verdict

Older homes are not inherently unsafe. They were wired for the appliances of their era, and the risk comes from what has been added since: air conditioning, multiple large appliances, home offices, EV chargers and hot tubs on conductors sized for a few lights and a refrigerator.

This checklist is designed to be walked through in an afternoon, noting conditions rather than repairing them. Anything that raises a flag gets tested by a licensed electrician.

The panel

• Breakers or fuses labelled, and the directory matches what actually turns off
• No double-tapped breakers, and no breaker larger than its conductor allows
• No rust, water staining or corrosion inside the enclosure
• No scorching, melting or discolouration on the bus or breakers
• Spare capacity for anything you plan to add
• Panel brand checked against known problem brands of the 1950s-1980s

Outlets and switches

• No warm, discoloured or cracked faceplates anywhere
• All outlets hold a plug firmly rather than letting it hang loose
• GFCI test buttons trip and reset in kitchens, bathrooms, garage and outdoors
• Three-prong outlets verified as actually grounded, not just adapted
• No extension cords used as permanent wiring
• No outlets in damp locations without a weatherproof cover

Visible wiring

• No knob-and-tube, cloth or brittle insulation in attic, basement or crawlspace
• No open splices or missing junction box covers
• Cable secured and protected where it passes through framing
• No aluminium branch circuit conductors on 15 or 20 amp circuits
• No wiring in contact with water pipes, ductwork or hot surfaces

Stop using it today

These conditions mean the circuit should be switched off at the panel and left off until an electrician has seen it: burning smell near any device or the panel, visible scorching, sparks or arcing, a faceplate that is hot to the touch, buzzing from the panel with the cover on, or any situation where water has reached an outlet or fixture.

Everything else on this checklist is a scheduling question. Those six are not.