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Free tools and guides for homeowners.
Price out a new build, understand what your insurer is asking for, or learn what goes into the job before you call. Plain-English answers from a licensed electrical contractor.
ESA LicensedElectrical Contractor #7018850
309A LicensedCertified Ontario electrician
$2M InsuredFull liability coverage
WSIB CoveredNo liability on your property
Tools and guides
Free to use, no sign-up needed.
Free Electrical Estimator
Building a new home? Answer a few questions and get a realistic price for the electrical in about 90 seconds.
Open the estimatorCost to Wire a New House in Ontario (2026)
A full breakdown of new-home electrical costs by square footage, by stage and by add-on.
Read the guideInsurance Electrical Issues
Insurer flagged your wiring or panel? What it means, what insurers usually ask for and how to fix it.
Insurance guideInsurance electrical guides
- Knob and tube wiringGuide
- Aluminum wiringGuide
- Fuse panels and 60A serviceGuide
- Federal Pioneer Stab-Lok and Zinsco panelsGuide
- Ungrounded two-prong outletsGuide
- Unpermitted or DIY electrical workGuide
Looking for a service instead? See everything we do.
Reviews
What our customers are saying
Real reviews from real customers on Google.
5.0
★★★★★
7 Google reviews★★★★★
“I had an excellent experience with Cornerstone Electrical installing the charger for my Ford Mustang Mach-E. The installation was done professionally, everything was neat and well organized, and the entire process was smooth from start to finish. The electrician was incredibly friendly, knowledgeable, and took the time to answer all of my questions. It’s clear they take pride in their work. I highly recommend Cornerstone Electrical to anyone looking for a reliable EV charger installation. Five stars all the way!”
M
M. E.Google review · EV charger installation
★★★★★
“Great service and communication. I emailed them for a quote. I got a quick response back. I needed a EV charger installed and some breaker change in my panels. The job was quick and everything looks good and professional. I would definitely recommend them.”
S
Sylvain L.Google review · EV charger & panel work
★★★★★
“Excellent service / top-notch job completion. Was on time and completed the necessary work in a professional manner. Was very polite and great to work with. Would absolutely recommend.”
B
Brock A.Google review
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