Licensed electrical work for Cornwall homes.
Panel upgrades, EV chargers, renovation wiring, lighting and new custom homes for homeowners in Cornwall and the surrounding area. Every job is done to code, with the ESA permit pulled and clear communication from quote to cleanup.
Electrical work built around Cornwall's housing
Cornwall has a strong mix of established older homes, multi-unit investment properties, and new construction. Many homeowners need panel upgrades to handle modern loads like heat pumps and EV chargers.
Investors are converting and renovating duplexes and triplexes that need metered electrical separations and code-compliant upgrades. We handle both residential and multifamily scopes in Cornwall, with experience navigating the city's building department and inspection process.
Electrical services in Cornwall
From a single new circuit to a full service upgrade, every Cornwall job gets a clear quote, tidy work, and the permit pulled.
EV Charger Installation in Cornwall
Level 2 home charging with a proper load calculation, a dedicated circuit and clean routing to the garage or driveway. ESA permit included.
EV chargersPanel & Service Upgrades in Cornwall
100A to 200A upgrades, fuse-to-breaker conversions and room for heat pumps, EV chargers and additions. We handle the hydro coordination.
Panel upgradesRepairs & Troubleshooting in Cornwall
Tripping breakers, dead outlets, flickering lights, or part of the house without power. We find the cause and fix it properly.
RepairsRenovations & Basements in Cornwall
Kitchens, basements, bathrooms, additions and suites, wired to code and planned before the walls close.
Renovation wiringNew Custom Homes in Cornwall
Complete electrical for new builds: service, rough-in and finish, coordinated with your builder and inspected at every stage.
Custom home wiringSee all services
Insurance electrical fixes, renovation general contracting, surge protection, lighting, generators, multi-unit work and more.
All servicesSimple from first call to final inspection
No runaround and no surprise charges. You'll always know what's happening and what it costs.
Tell us about the job
Fill out the quote form or give us a call and tell us what you need. We'll ask the right questions and get back to you quickly.
Get a clear written quote
A fixed price with exactly what's included, so you can compare it fairly. If something changes, you'll hear about it before any work is done.
Done right and inspected
Neat, code-compliant work, the ESA permit filed, and your home cleaned up before we leave.
Why Cornwall homeowners choose Cornerstone
The fundamentals that make hiring an electrician feel less risky.
Licensed 309A & ESA registered
Every job is done under a 309A licence with an ESA permit filed. You get the Certificate of Acceptance on file when the work passes inspection, which helps with insurance, resale and peace of mind.
$2M liability & WSIB covered
$2 million in liability insurance and WSIB coverage on every job. If something goes sideways, you're not carrying the risk.
Clear quotes, honest scope
Itemized quotes so you can see what's included and what isn't. If an upgrade isn't actually necessary, we say so. Most residential quotes go out within 48 hours.
What our customers are saying
Real reviews from real customers on Google.
“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!”
“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.”
“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.”
Common questions from Cornwall homeowners
Do you do multifamily electrical work in Cornwall?
Yes. We handle electrical scopes for duplexes, triplexes, quadruplexes, and small apartment buildings in Cornwall. This includes separate metering, panel layout, and ESA permit coordination for multi-unit residential projects.
How far is your base from Cornwall?
We're based in Morewood, roughly 45 minutes from Cornwall. For projects that justify the mobilization, like custom homes, multi-unit builds, or larger renovation scopes, we serve Cornwall regularly.
Can you upgrade the electrical in an older Cornwall home?
Yes. Cornwall has many older homes that benefit from panel upgrades, aluminum wiring remediation, and modernized circuits. We assess the existing system and provide an honest recommendation on what's needed to bring it up to current code.
Communities near Cornwall
Near Cornwall but don't see your town? Call and we'll confirm whether you're in our service area.
Long Sault · Ingleside · Lancaster · Morrisburg · Alexandria · Williamstown
Need an electrician in Cornwall?
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