If you have ever asked an electrician for a quote and watched the price climb because "we need to pull an ESA permit," you might have wondered whether the permit is actually doing anything for you or whether it is just paperwork. The honest answer is: the ESA permit and inspection process is the single most important thing standing between an electrical job that is done right and one that fails an inspection or burns a house down. Here is how it actually works.
What the ESA is
The Electrical Safety Authority (ESA) is the provincial body responsible for enforcing the Ontario Electrical Safety Code (OESC) and licensing electrical contractors and electricians. Any electrical work in Ontario beyond minor like-for-like device replacement requires an ESA permit, and the work has to be inspected by an ESA inspector before it can be legally energized. The ESA is the body that issues the Licensed Electrical Contractor (LEC) licence that an electrical company must hold to do work in Ontario, the Master Electrician licence required of the shop's licence holder, and the 309A Certified Journeyperson trade certification that individual electricians earn through Skilled Trades Ontario.
What needs a permit
Effectively, most electrical work needs a permit. The OESC requires a permit for:
- New circuits or extension of existing circuits
- Service upgrades and panel replacements
- Sub-panel installs
- New construction wiring
- EV charger installs
- Generator installs and transfer switch installs
- Hot tub, pool, and outdoor receptacle installs
- Knob-and-tube remediation
- Aluminum branch-circuit remediation
- Most commercial work
What does NOT require a permit: like-for-like receptacle replacement, switch replacement, light-fixture replacement on an existing box, and minor cord-and-plug work on existing circuits. If anyone tells you a service upgrade or an EV charger install does not need a permit, walk away - that is not a contractor you want.
How the permit gets pulled
As an LEC, we pull the permit online through ESA's contractor portal in our name. The permit lists the work scope, the location, and the LEC contractor as the responsible party. The permit fee scales with the scope and is paid by us and passed through transparently on the invoice.
Important: the permit is pulled in the LEC's name, not the homeowner's. If a contractor tells you to pull the permit yourself "to save money," that is a major red flag - it means they are not actually an LEC, or they are trying to dodge their own responsibility for the work. Walk away.
The rough-in inspection
For jobs that involve new wiring inside walls or ceilings - new circuits, sub-panel installs, additions - the ESA inspector visits the site during the rough-in phase, before the drywall goes back up. The inspector checks:
- Conductor sizing is correct for the breaker
- Boxes are properly secured and at correct depth
- Cable is properly stapled and protected
- Connections at junction boxes are correct
- Bonding and grounding is correctly terminated
- Service-entrance work meets clearance and material requirements
If anything is wrong, the inspector issues a defect notice with specifics. We correct, and request a re-inspection. Most rough-in inspections pass on the first visit when the work has been done by a 309A electrician working off proper drawings.
The final inspection
After trim work is complete (devices in, fixtures hung, panel labelled, everything energized) the ESA inspector returns for the final inspection. The inspector verifies:
- All devices and fixtures are properly installed and grounded
- GFCI and AFCI protection is in the right places
- Panel labelling is complete and legible
- Service entrance is correctly installed and bonded
- Any equipment that was scheduled for a rough-in is consistent with what got installed
The Certificate of Inspection
When the final inspection passes, the ESA issues a Certificate of Inspection (CoI). This is the document that proves the work was done to OESC, inspected by the ESA, and is safe to energize. The CoI is what your home insurer will ask for if anything ever happens - and the absence of one is what they will use to deny a claim.
The CoI is delivered electronically and a copy ends up with the homeowner. We always send it to the customer at the close of the job. If you ever lose it, the ESA can reissue it from their records as long as you have the permit number.
Why the inspection process actually matters
Three reasons:
- Insurance. A claim related to electrical issues will be investigated. If the work that contributed to the loss was uninspected, your insurer can deny the claim. The Certificate of Inspection is your proof that the work was done right.
- Resale. Home inspectors check for ESA permits on visible recent work. Unpermitted electrical work shows up as a flag on the buyer's inspection report, and the buyer's lender can refuse to fund.
- Safety. An ESA inspector is a second set of trained eyes on the work. We catch our own mistakes; the inspector catches what we miss. The system works.
What you should ask any electrician
- "Are you an ESA Licensed Electrical Contractor?" - Required. Ask for the LEC number.
- "Will the ESA permit be pulled in your name?" - Required. Permits in homeowner names are a red flag.
- "Will I get a copy of the Certificate of Inspection?" - You should get it automatically.
- "Are your electricians 309A Certified?" - Required for journeyperson-level work in Ontario.
When to call us
We are an ESA Licensed Electrical Contractor and our electricians are 309A Master Electricians. Every job that requires a permit gets one - in our name, with the inspection scheduled, and the Certificate of Inspection delivered to you at close-out. Whether the work is a residential repair, a commercial fit-out, or a service upgrade, the permit and inspection workflow is the same. Request a quote for any electrical work and we will tell you upfront whether a permit is needed and what it will cost.