Electrical work is the home category where the cost of getting it wrong is much higher than the cost of hiring help. House fires, electrocution, code violations that complicate home sales — all real outcomes from amateur electrical work done wrong.
Generally homeowner-doable
- Replacing a light fixture (breaker off, like-for-like)
- Replacing a standard outlet or switch (breaker off, like-for-like)
- Installing a smart switch within the same circuit
- Replacing outlet and switch cover plates
- Installing plug-in surface-mount lighting
- Replacing a ceiling fan in an existing fan-rated box
For any of the above: breaker off first, verify with a voltage tester, follow existing wiring exactly, label what comes off.
Always hire a licensed electrician
- Anything inside the breaker panel
- Panel upgrades (100A to 200A)
- Anything involving the meter or service entrance
- Aluminum wiring (homes from late 1960s through mid-1970s)
- Knob-and-tube wiring (pre-WWII homes)
- Outdoor electrical, EV chargers, pool/hot tub wiring
- Any wiring during a permitted renovation
The home-sale problem
DIY electrical work shows up during home inspection when you sell. Buyers' inspectors flag non-permitted work, missing GFCIs, exposed wiring. Then you're hiring an electrician anyway under time pressure to redo work and pull retroactive permits.
Tools to own if you DIY anything
- Reliable voltage tester (non-contact and contact types)
- Insulated screwdrivers
- Wire strippers and wire nuts
- Electrical tape
Most important habit: verify the circuit is dead before touching anything, even after flipping the breaker.