Licence required by law

Ontario ESA — Electrical Safety Authority

Ontario ESA — Electrical Safety Authority is a public licensing or registration record. We cross-reference it against trader profiles as independent evidence when checking a trader.

603contractors with a Ontario ESA — Electrical Safety Authority entry in the public data we track

Based on public register entries and source listings collected up to Jul 11, 2026. Not an official membership count.

Check a specific contractor

Thinking of hiring someone? Ask them for their registration details, then run their name through our Cowboy Checker to see their reviews, credentials and company details in one place.

Where Ontario ESA — Electrical Safety Authority holders are

  • ON592 entries tracked
  • QC2 entries tracked
  • Ontario1 entries tracked
  • Casselman1 entries tracked

Trades that hold it

Electrician · 598Construction Contractor · 2Builder · 1

Ontario ESA — Electrical Safety Authority holders with review evidence

These businesses hold a current Ontario ESA — Electrical Safety Authority entry and have customer reviews we can show. This is a small slice of all holders, not the register itself.

Common questions

What is Ontario ESA — Electrical Safety Authority?

Ontario ESA — Electrical Safety Authority is a public licensing or registration record. We cross-reference it against trader profiles as independent evidence when checking a trader. (Licence required by law.)

How many contractors hold Ontario ESA — Electrical Safety Authority?

We track 603 contractors with a Ontario ESA — Electrical Safety Authority entry, based on register and listing data collected up to Jul 11, 2026. This reflects the public entries we have collected, not necessarily the scheme's complete membership.

How do I check whether a specific contractor holds Ontario ESA — Electrical Safety Authority?

Look the contractor up on MyTrustedTraders. Profiles show the credentials we have found for them, alongside reviews and other public evidence. Ask the contractor for their registration details too.

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We show what the public sources say, with dates. A listing here is not an endorsement, and absence from our data does not mean a contractor is unregistered. Always confirm current status with the scheme before you hire.