Electrical.
Electrical problems are among the most safety-critical things we find — and often the least visible. Here’s what we check, the red flags we look for, and what you can safely keep an eye on yourself.
What we check during an inspection
We evaluate the accessible, visible electrical system for safety and function — never opening live components beyond removing the panel cover.
✓ Main panel & breakers
We check capacity, breaker condition and labeling, and look for double-tapped breakers or signs of overheating.
✓ Service & grounding
We review the visible service entrance and confirm the system appears properly grounded and bonded.
✓ Outlets & GFCI/AFCI
We test a representative sample of outlets and check for GFCI/AFCI protection where it’s required — kitchens, baths, garages, and exterior.
✓ Switches & fixtures
We operate switches and fixtures, noting anything loose, warm, or non-functional.
✓ Visible wiring
Where accessible (panel, attic, basement), we note wiring type and condition, including older aluminum or knob-and-tube.
✓ Smoke & CO detectors
We note the presence and placement of smoke and carbon-monoxide alarms.
Common problems we find
✓ Double-tapped breakers
Two wires under one breaker lug that isn’t rated for it — a frequent and easily corrected hazard.
✓ Missing GFCI/AFCI
No ground-fault protection near water or required areas, a common shock risk in older homes.
✓ Aluminum branch wiring
Common in mid-1960s–70s homes; it needs special connectors and handling to be safe.
✓ Open or exposed splices
Junctions without covers or wiring spliced outside a box — a fire risk.
✓ Reversed polarity / ungrounded outlets
Wiring mistakes that defeat the safety of the outlet.
✓ Unpermitted DIY work
The classic “handyman” panel or addition — often the source of multiple issues at once.
What you can do safely
Electrical work itself should be left to a professional — but there’s plenty you can monitor.
✓ Test GFCIs monthly
Press “test,” confirm power cuts, then “reset.” Replace any that don’t trip.
✓ Test alarms monthly
Smoke and CO alarms save lives — test monthly and replace any unit over 10 years old.
✓ Don’t overload circuits
Avoid daisy-chained power strips, retire frayed cords, and unplug high-draw devices when not in use.
✓ Watch for warning signs
Warm outlets, buzzing, flickering lights, or breakers that trip often all warrant a call.
✓ Keep the panel accessible
Know where it is, keep it labeled and clear, and never block it.
✓ Leave panel work to a pro
Opening or modifying the panel is dangerous — always use a licensed electrician.
Electrical quirks we see in Colorado homes
✓ The 1960s–70s aluminum era
A large share of Denver-metro and foothills homes went up during the aluminum branch-wiring years. It’s manageable with the right connectors (COPALUM/AlumiConn), but undocumented “fixes” with standard wire nuts are a fire risk we flag every month.
✓ Panels with a reputation
Federal Pacific and Zinsco panels — both common in Front Range homes of a certain age — have documented failure-to-trip histories. We call them out for replacement conversations even when they look fine.
✓ Lightning country
Colorado ranks high for lightning strikes. Whole-house surge protection is a cheap add during any panel work, and we note homes without it — especially with a well pump or lots of electronics.
✓ Hot tubs, heat tape & additions
Mountain living adds loads city homes don’t have: spa circuits, roof heat cable, generators, EV chargers. Each one is a common source of the DIY wiring we write up.
Common questions
Is aluminum wiring in a house dangerous?
Aluminum branch wiring (common ~1965–1975) isn’t an automatic deal-breaker, but it expands and loosens at connections, which can overheat. It’s considered serviceable when every connection uses approved aluminum-rated connectors — a licensed electrician can retrofit them. What we flag hardest is aluminum joined with standard wire nuts or backstabbed devices.
What is a double-tapped breaker and does it matter?
It’s two circuit wires landed under one breaker terminal that’s only rated for one. The connection can loosen, arc, and overheat. It’s one of the most common defects we find and usually one of the cheapest to fix — an electrician adds a breaker or a properly rated tandem. Cheap fix, real risk if ignored.
Do older homes need GFCI outlets?
Current standards want GFCI protection anywhere water and electricity can meet — kitchens, bathrooms, garages, exteriors, laundry, and unfinished basements. Older homes are rarely required to retrofit, but we still report missing GFCIs as a safety improvement because the shock protection matters more than the code year. Retrofitting costs little.
Are Federal Pacific or Zinsco panels really a problem?
Both have well-documented histories of breakers that fail to trip under fault conditions — the one job a breaker exists to do. Many insurers now surcharge or decline homes with them. We recommend an electrician evaluate replacement; a modern panel typically runs $2,000–$4,000 on the Front Range.
Can I add more breakers to my panel myself?
No — panel interiors stay energized even with the main off, and DIY panel work is both dangerous and a common source of the defects we report. What you can safely do: keep the panel accessible, label circuits, test GFCIs monthly, and note any breaker that trips repeatedly (that’s a symptom, not a nuisance).
This guide is for general education. It reflects what we look for during a home inspection, not a substitute for a licensed professional. If you have a specific concern, please contact a licensed electrician — and of course, we’re always happy to take a look during an inspection.
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Read →Concerned about your electrical?
We’ll give your home a thorough, plain-English inspection and flag anything worth a closer look.