How to Verify an Electrician Is Licensed in Ontario

Before you hire an electrician in Ontario, you can — and should — verify their licence through Skilled Trades Ontario and confirm their work will be inspected under the Electrical Safety Authority. Skipping this step is one of the most common and costly mistakes Ontario homeowners make.

Why Electrical Licensing Matters More Than You Think

Electrical work is one of the few home improvement categories in Ontario where the consequences of hiring an unlicensed person go beyond a bad renovation. Faulty wiring is a leading cause of residential fires. Insurance companies can deny claims if unpermitted or uninspected electrical work is later found to have contributed to a loss. And when you sell your home, a real estate lawyer or buyer's inspector will ask about permits.

The good news: Ontario has a clear, public licensing system. You just need to know where to look.

Skilled Trades Ontario is the provincial body that certifies tradespeople, including electricians. The two main electrical certifications in Ontario are:

For most homeowners hiring someone to wire a basement, install a panel, or add circuits, you want a 309A-certified electrician.

The Electrical Safety Authority (ESA) is a separate body. It issues electrical permits, inspects completed work, and enforces the Ontario Electrical Safety Code. A licensed electrician can pull an ESA permit; an unlicensed person generally cannot.

These two bodies play different roles, and both matter.

How to Check an Electrician's Licence in Ontario

There are two places to look, and neither requires you to take the contractor's word for it.

1. Skilled Trades Ontario — Certificate of Qualification lookup

Skilled Trades Ontario maintains a public registry of certified tradespeople. You can search by name or certificate number at the Skilled Trades Ontario website. The result will show whether the certificate is active, suspended, or expired. This takes about two minutes.

If a contractor tells you they are a licensed electrician but cannot provide a certificate number, that is a serious warning sign.

2. ESA — Electrical contractor registration

If a company (rather than a sole-trade individual) is doing the work, the business itself must be registered as an Electrical Contractor with the ESA. This is separate from the individual electrician's Skilled Trades Ontario certificate. You can verify ESA electrical contractor registration on the ESA's public website.

A properly set-up electrical contracting business will have both: individual technicians with valid 309A certificates and the company registered with the ESA as an electrical contractor.

What to ask the contractor directly:

A legitimate electrician will answer all three without hesitation.

What an ESA Permit Actually Means for You

Many homeowners hear "permit" and think it means extra cost and inconvenience. In reality, an ESA electrical permit is one of the best consumer protections available to you.

When an ESA permit is pulled:

This paper trail protects your home's resale value, your insurance coverage, and your family's safety.

Permits are required for most electrical work beyond basic fixture swaps — including new circuits, panel upgrades, EV charger installations, basement finishing, and additions. If a contractor suggests skipping the permit to "save you money," walk away. The liability they are offloading onto you is not worth the savings.

The Gap That Credentials Alone Don't Cover

A valid licence tells you a contractor has met a minimum technical standard. It does not tell you whether they show up on time, communicate clearly, price fairly, or stand behind their work when something goes wrong six months later.

This is the gap that reputation data fills.

ProScore's Trust Index blends verified credentials like licensing status with reputation signals, customer sentiment, and business transparency into a single scored profile. Across the electricians ProScore has scored, the platform has analyzed over 40,000 reviews from 10+ data sources, surfacing patterns that a single licence lookup cannot reveal.

An electrician can hold a valid 309A certificate and still have a pattern of abandoned projects, disputed invoices, or lapsed WSIB coverage. Credentials are the floor, not the ceiling.

When you search for electricians in Toronto, Ottawa, Hamilton, or anywhere else across Ontario's 884+ cities, ProScore shows you both the credential signals and the reputation data in one place — so you are not left stitching together information from three different government websites and a handful of review pages.

Red Flags to Watch for During the Hiring Process

Even with verification tools available, some homeowners get burned because the warning signs were subtle. Here are the most common ones specific to electrical hiring:

How ProScore Helps You Go Beyond the Licence Check

Ontario has over 17,741 contractors scored on ProScore, spanning trades from electrical to roofing to HVAC. The platform was built on the recognition that homeowners need more than a licence lookup — they need a full picture of how a contractor actually performs.

The ProScore Trust Index evaluates contractors across four dimensions: reputation, verified credentials, customer sentiment, and business transparency. Each scored contractor receives a public tier — Elite, Trusted, Good, Basic, or Caution — that reflects the full picture, not just whether a piece of paper is on file.

For electricians specifically, credential verification is one of the most important inputs. An electrician who has kept their 309A current, maintained ESA registration, and carried valid WSIB coverage over time demonstrates a level of business discipline that shows up in their score.

You can browse electricians across Ontario or search by city to find scored profiles in your area. If you are a licensed electrician who wants your credentials and reputation reflected in a ProScore profile, you can list your business and claim your profile.

Frequently Asked Questions

Does every electrician in Ontario need to be licensed?

Yes. Anyone performing electrical work for hire in Ontario must hold a valid Certificate of Qualification from Skilled Trades Ontario — typically a 309A for residential and commercial work. Homeowners can legally do some electrical work in their own home, but any hired tradesperson must be certified. Companies performing electrical work must also be registered as electrical contractors with the ESA.

What is the difference between Skilled Trades Ontario and the ESA?

Skilled Trades Ontario certifies individual electricians — it issues and maintains Certificates of Qualification. The Electrical Safety Authority (ESA) regulates electrical work itself: it issues permits, inspects installations, and enforces the Ontario Electrical Safety Code. A properly credentialed electrical contractor will have both individual certification through Skilled Trades Ontario and company registration with the ESA.

Can I verify an electrician's credentials before signing a contract?

Yes, and you should. Ask the electrician for their Certificate of Qualification number and look it up on the Skilled Trades Ontario public registry. Ask for the company's ESA electrical contractor registration number and verify it on the ESA website. Also request a WSIB Clearance Certificate. This verification takes less than ten minutes and can save you significant legal and financial exposure.

Ready to find a verified, scored electrician near you? Search electricians across Ontario on ProScore and see how each contractor measures up across credentials, reputation, and business transparency.