How to Hire a Electrical Contractor in Ontario
All electrical work in Ontario must be performed by an ESA-licensed contractor and requires an ESA permit. This is non-negotiable — unlicensed electrical work is dangerous, voids your insurance, and can prevent you from selling your home.
Ontario Electrical Licensing Requirements
ESA Licensed Electrical Contractor (ECRA/ESA #)
All electrical work requires ESA permits and a licensed contractor.
When to Hire a Electrical Contractor
- Your panel is less than 100 amps (common in older homes)
- You're adding an EV charger or hot tub
- Your lights flicker or dim when appliances run
- You have aluminum wiring (common in 1965-1975 homes)
- You need outdoor lighting, security cameras, or a generator hookup
- You're finishing a basement or building an addition
- Your home still has a fuse box instead of breakers
Timeline: Outlet installation takes 1-2 hours. Panel upgrade takes 4-8 hours. EV charger installation is typically same-day. Whole-house rewiring takes 3-7 days.
Electrical Costs in Ontario (2026)
Prices are approximate for Ontario (CAD). Actual costs vary by city, scope, and season. Always get 3 written quotes.
Questions to Ask Before Hiring
- 1What is your ESA/ECRA contractor number?
- 2Will you pull the ESA permit and schedule the inspection?
- 3Do you carry WSIB coverage?
- 4Is a panel upgrade required for this work?
- 5What brand of panels and breakers do you use?
- 6What is the warranty on your work?
- 7Do you handle the ESA inspection notification?
Red Flags — When to Walk Away
- No ESA/ECRA number
- Offers to skip permits
- No WSIB
- No written contract
Homeowner Checklist — Before You Hire
- Get at least 3 written quotes for comparison
- Verify WSIB clearance certificate (protects YOU from liability)
- Check Google reviews AND ask for local references
- Confirm they will pull all required permits
- Never pay more than 10-15% deposit upfront
- Get everything in writing — scope, timeline, payment schedule
- Verify their business insurance is current
- For regulated trades (electrical, plumbing, gas), verify their license number
Payment: 10-15% deposit, progress payments tied to milestones, 10% holdback until completion. Ontario's Construction Act provides a 10% holdback right on construction projects.
Best Time to Hire a Electrical Contractor
Spring is peak booking season. Contact contractors in February for the best availability.
Summer is the busiest season. Prices are highest and wait times longest. Book early.
Fall is the sweet spot — contractors are less busy, prices drop, and you prepare for winter.
Winter is off-season for exterior work. Interior renovations get the best prices and fastest timelines.
How to Verify a Electrical Contractor in Ontario
Free online tool to verify any contractor's WSIB coverage status.
Verify contractor WSIB coverage before hiring — protects you from liability
Verify licensed electricians. All electrical work in Ontario requires ESA permits.
Trade certification and public register. Verify compulsory trade certifications (plumber, electrician, etc.).
Searchable list of businesses with unresolved consumer complaints in Ontario.
Frequently Asked Questions — Hiring a Electrical in Ontario
- Do I need a licensed electrical contractor in Ontario?
- ESA Licensed Electrical Contractor (ECRA/ESA #)
- How much does electrical work cost in Ontario?
- Panel Upgrade: $1,500-$4,000 (200A panel). Outlet Installation: $150-$400 (per outlet). Ev Charger: $1,000-$3,500 (installed). Rewiring: $8,000-$25,000 (whole house). Prices are approximate and vary by region.
- How do I verify a electrical contractor in Ontario?
- Check WSIB coverage at wsib.ca. Verify their licence at https://esasafe.com/contractor-search/. Always get 3 written quotes.
- How much deposit should I pay a contractor?
- 10-15% deposit, progress payments tied to milestones, 10% holdback until completion. Ontario's Construction Act provides a 10% holdback right on construction projects.
- What are the red flags when hiring a electrical contractor?
- No ESA/ECRA number. Offers to skip permits. No WSIB. No written contract.
- What if I have a dispute with my contractor?
- Ontario Consumer Protection, Better Business Bureau, Small Claims Court (up to $35,000). Document everything and keep copies of all contracts and receipts.
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