How Often Should You Have Your Home's Wiring Inspected?
There's no single universal number for how often to inspect your home's wiring, but there are solid guidelines based on age plus specific triggers that should move up your timeline regardless. This guide lays out realistic intervals, the warning signs that mean 'now,' and what a real electrical inspection actually covers.
Written by Steven Rotan
Licensed Journeyman Electrician — Oregon #883LR
⚠️ Before you start
- Don't treat a general home inspection during a home purchase as equivalent to a dedicated electrical inspection.
- If you notice flickering lights across multiple rooms, warm outlets, a burning smell, or frequent breaker trips, schedule an inspection immediately.
There's no single universal number, but there are real guidelines
The honest answer depends on your home's age, history, and whether anything has changed recently.
The general guideline
- Every 3-5 years for homes over 40 years old, or any home with DIY work history or an outdated panel.
- Every 5-10 years for newer homes with no known issues and a modern panel.
- Before buying any home, regardless of age.
- Immediately, if any specific triggers below apply.
Specific triggers that mean "now," not "eventually"
- You're planning a major renovation.
- You just bought an older home.
- You've noticed warning signs - flickering, warm outlets, burning smells, frequent trips.
- You know or suspect aluminum wiring or knob-and-tube.
- Your panel is a known problem brand (Federal Pacific, Zinsco).
- Your insurance company is asking.
- You're adding a major new load - EV charger, hot tub, heat pump.
What a real electrical inspection actually covers
Panel condition and sizing, wiring type and condition, GFCI/AFCI protection, grounding and bonding, outlet and fixture condition, smoke and CO detector placement.
What it typically costs
Generally $150-$400 depending on home size and access.
Bottom line
If your home is older, has any unknown history, or you're adding a major new load, don't wait for a problem to force the issue - schedule a dedicated inspection.
📞 When to call a professional
Scheduling and performing an electrical inspection is entirely a licensed electrician's job.
Frequently asked questions
Do I really need an inspection if nothing seems wrong?
Yes, especially in older homes - some of the most serious issues show zero visible symptoms until something goes wrong.
Is a home inspection during a real estate purchase enough?
Not on its own for an older home. General home inspectors check electrical only briefly; a dedicated inspection goes much deeper.
What's the difference between an electrical inspection and just calling an electrician when something breaks?
A dedicated inspection is proactive - designed to catch problems before they cause a failure or fire, rather than responding after something has already gone wrong.
How much does an electrical inspection cost?
Typically $150-$400 depending on home size and access to the panel, attic, and crawlspace.
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