Why the electrical deserves its own look
A general home inspection is valuable, but a home inspector is not an electrician. They look at what is visible and flag concerns. They usually will not open up devices, assess every circuit or tell you what fixing a problem actually involves.
Edmonton's older housing stock adds some local wrinkles. Character homes in older neighbourhoods may still have knob-and-tube. Many 1960s and 70s bungalows and splits have aluminium branch wiring. And a lot of homes of every age have a 60 A or 100 A service that can struggle with today's loads, from air conditioning to a future EV charger.
What you can check at a showing
You do not need tools to gather useful information. Look, do not touch anything inside.
- Panel: note the brand, whether it has fuses or breakers, the main breaker size, and whether circuit labels are complete. Look for rust or water staining.
- Receptacles: two-prong outlets suggest ungrounded wiring. Check for GFCI receptacles in the bathroom, kitchen and outside.
- Basement: look at exposed cables between joists for "AL" or "ALUMINUM" printing, and for porcelain knobs and tubes.
- Extension cords and power bars used as permanent wiring, or lots of plug-in adapters.
- Signs of DIY work: loose cables stapled across ceilings, junction boxes without covers, lights hung from cords, or a basement suite that looks newer than its wiring.
- Smoke and CO alarms: are they there, hardwired, and in the right places?
Never remove the panel cover or pull out receptacles during a showing. Live parts are exposed behind them. Note what you see and leave the rest to a licensed electrician.
Questions to ask the seller
- When was the electrical service last upgraded, and was there a permit?
- Has the home been rewired, fully or partly? Is any knob-and-tube or aluminium wiring still in service?
- Was the basement developed with permits? Who did the electrical work?
- Have there been any electrical problems, tripping breakers or insurance claims?
- Are there any recent electrical inspection reports?
You can also ask the City of Edmonton about permits on file for the property. Finished basements, garages and additions without electrical permits are common and worth knowing about before you buy.
Red flags and how serious they are
| Finding | Why it matters | Typical next step |
|---|---|---|
| Active knob-and-tube | No ground, aging insulation, insurance issues | Assessment and a rewire plan |
| Aluminium branch wiring | Connections can overheat if not done with the right parts | Inspection and pigtail repair or rewire |
| Fuse panel or very small service | Limited capacity, may not suit modern loads | Panel replacement or service upgrade |
| Unpermitted basement or garage wiring | Unknown quality, may be hidden problems | Inspection; may need corrections and a permit |
| Scorch marks, warm devices | Active overheating | Treat as urgent |
| No GFCI near water | Shock risk | Add GFCI protection |
Read more in our guides on aluminium wiring and knob-and-tube wiring.
Bringing in an electrician before you firm up
A pre-purchase home electrical inspection by a licensed electrician gives you a written list of what is safe, what needs attention soon and what can wait. That helps you negotiate with real information and budget for the first year in the home.
The inspection usually covers the service and panel, grounding and bonding, wiring type, a sample of devices and connections, GFCI and AFCI protection, smoke and CO alarms, and any obvious unpermitted work.
If you plan to finish the basement, add air conditioning, a hot tub or an EV charger, mention it. A load calculation can tell you whether the existing service can handle it or whether a service upgrade belongs in your budget.
After you get the keys
- Label or update the panel schedule so you know what each breaker controls.
- Test every GFCI and AFCI. See GFCI and AFCI protection explained.
- Test smoke and CO alarms and check their age.
- Book any urgent repairs before you start renovating.
- Find the main breaker and show everyone in the household where it is.
- Check outdoor receptacles and block heater outlets before the first cold snap.
Moving day is also the best time to plan upgrades. Walls are bare, furniture is not yet in place and you can see exactly where you need more receptacles, better lighting or a dedicated circuit for a home office or workshop.
If the inspection turned up several items, ask your electrician to group them by priority. Safety items come first, then anything your insurer has asked for, then the upgrades that make the home work better for you. Doing related work under one permit is usually more efficient than a string of separate visits.
Common questions
Is a home inspection enough for the electrical?
It is a good start, but a home inspector is a generalist. For older homes, or when the inspector flags electrical concerns, a licensed electrician can give you a more detailed assessment and realistic options.
Will an insurer cover a home with aluminium or knob-and-tube wiring?
It depends on the insurer. Some ask for an inspection or proof of remediation, and some have stricter rules for knob-and-tube. Ask your insurer before you firm up.
Is a 100 A service too small?
Not always. It depends on the size of the home, how it is heated and what you plan to add. A load calculation answers this properly.
Can I ask the seller to fix electrical problems before closing?
That is a negotiation question for your realtor, but a written electrical report makes those conversations clearer for everyone.
Codes and permit rules change and every building is different. For work on your system, talk to a licensed electrician and your local permit authority.