Exterior lighting covers a wide range of work — from a simple like-for-like porch fixture swap (30 minutes, no permit, fully DIY) to adding a new circuit for a garage flood light (licensed electrician, ESA permit, $500–$1,200). Understanding where the DIY line falls under Ontario's Electrical Safety Code is the single most important step before starting any outdoor lighting project. Get it right and you save money; get it wrong and you face an insurance issue or a failed home inspection.
This guide covers all three categories of exterior lighting: line-voltage fixtures (porch, garage, motion sensor), low-voltage landscape systems (12V, no permit), and solar path lights (no electrical work at all). If you're adding deck lighting at the same time, see our guide on how to install deck lighting. For a broader look at what GTA homeowners can legally DIY vs. what requires a licensed trades person, see our Ontario building code DIY guide.
⚠️ Ontario ESA Rule: Know What Requires a Permit
Like-for-like fixture swap at the same box = DIY-legal, no permit. Adding a new exterior circuit, running new wiring, or moving an electrical box = licensed electrician + ESA permit required. All outdoor outlets must be GFCI-protected under Ontario's Electrical Safety Code — no exceptions. An outdoor outlet without GFCI is a code violation. If you're unsure whether your project crosses into permit territory, contact the Electrical Safety Authority at esasafe.com before starting.
2026 GTA Exterior Lighting Pricing
| Item | Cost (CAD) | Notes |
|---|---|---|
| Wall-mount porch / garage fixture | $50–$250 | Hardware store; wide range in finish and quality |
| Solar path light set (6 lights) | $40–$120 | No wiring; stake into ground; great for GTA summers |
| Motion-sensor exterior light | $60–$180 | Combo flood + sensor; same box swap = DIY-legal |
| Post light + post | $80–$300 + post cost | New circuit required if adding new run — hire electrician |
| Licensed electrician (GTA hourly rate) | $120–$160/hr | 2026 GTA market rate; minimum call varies |
| Fixture swap — same box (by electrician) | $150–$250 | Flat-rate common; includes disposal of old fixture |
| New exterior circuit with GFCI outlet | $500–$1,200 | Depends on panel distance and wall penetration complexity |
| GFCI outlet (parts only) | $20–$40 | Required for all outdoor outlets — Ontario Electrical Safety Code |
| ESA permit (homeowner self-install) | $100–$200 | Required when homeowner adds new wiring; inspection arranged by ESA |
What You Can DIY vs. What Requires an Electrician
✅ DIY-Legal in Ontario (No ESA Permit)
- Replace a porch or garage light at the same electrical box (like-for-like)
- Replace a motion-sensor light at the same electrical box
- Replace an outdoor outlet at the same box (must use GFCI outlet)
- Install solar path lights (no electrical connection)
- Install low-voltage (12V) landscape lighting with a plug-in transformer
- Install low-voltage LED strip lights on deck or fence with a 12V adapter
🔴 Requires Licensed Electrician + ESA Permit
- Adding a new outdoor circuit (new breaker, new wiring run)
- Installing a new outlet in a new location outdoors
- Adding a new exterior light where no electrical box currently exists
- Running wiring through exterior walls to a new location
- Any work inside the electrical panel
- Installing a hard-wired post light at a new location in yard
Step-by-Step: Replacing a Porch or Garage Light Fixture
Choose Your Fixture
Select an outdoor-rated fixture (UL or ETL listed for "wet" or "damp" locations — check the packaging label). Porch fixtures in covered locations need a "damp" rating minimum. Fully exposed garage and driveway fixtures need a "wet" rating. LED fixtures are strongly recommended for GTA's climate — LED drivers handle freeze-thaw cycles far better than incandescent or CFL bulbs, and LEDs last 15,000–25,000 hours vs. 1,000 hours for incandescent. Match the fixture's mounting plate to your existing electrical box — most residential boxes are standard 4-inch round, but confirm before buying.
Check Ontario ESA Requirements for Your Scope
Confirm you are replacing a fixture at the same box with no new wiring — this is the DIY-legal scenario under Ontario ESA homeowner rules. If the box is in a different location, if there is no existing box, or if you need to extend wiring, stop here and call a licensed electrician. Not sure? Email or call the ESA directly (esasafe.com) — they will advise you on permit requirements for your specific project scope without charge.
Turn Off the Circuit at the Breaker Panel
Identify which circuit breaker controls the exterior light you are replacing. Flip that breaker to OFF. Label it with tape so nobody flips it back on while you're working. Note: some homes have separate exterior lighting circuits on GFCI-protected outlets — trace the circuit carefully. If the existing fixture is on a shared circuit with interior lights, you'll be able to see which breaker controls it by checking which lights go off inside when you flip breakers.
Verify Power Is Off with a Voltage Tester
This step is not optional. After flipping the breaker, use a non-contact voltage tester ($20–$40 at any hardware store) to confirm the fixture wires are dead before touching them. Hold the tester near the black (hot) wire — no beep or light = confirmed off. Breakers can be mislabelled and circuits can be wired in unexpected combinations. A voltage tester costs less than a trip to the ER. Test before every touch.
Remove Old Fixture and Install the New One
Remove the old fixture's mounting screws and pull the fixture away from the wall. You'll see two or three wires in the box: black (hot), white (neutral), and bare copper or green (ground). Disconnect the old fixture wires — note which connects to which before removing. Connect new fixture wires to the matching house wires: black-to-black, white-to-white, ground-to-ground, using the wire nuts provided with the fixture. Tuck wires neatly into the box and secure the new fixture to the electrical box with the mounting screws. Apply a bead of exterior silicone caulk around the perimeter of the fixture base where it meets the wall — this is a water intrusion point that many people miss.
Restore Power and Test
Flip the breaker back to ON. Test the fixture at the switch. For motion-sensor fixtures: stand in the sensor's detection zone and move slowly — the sensor activates on motion crossing the detection field, not motion directly toward it. Adjust the sensor aim and sensitivity settings (on the back of most motion-sensor units) to minimize false triggers from trees or passing cars. Most motion-sensor exterior lights have a manual override for all-night-on mode and a dusk-to-dawn timer setting.
Low-Voltage Landscape Lighting: No Permit, Full DIY
💡 Low-Voltage (12V) Landscape Lighting: Easiest Outdoor Lighting Project
A 12V low-voltage landscape lighting system runs on a plug-in transformer (plugged into an existing outdoor outlet) and carries 12V DC power through a simple two-conductor wire. It is completely safe to handle, requires no ESA permit, and can be installed by any homeowner in a few hours. A typical kit for a GTA front pathway: 6–10 path lights + transformer runs $80–$250 and takes one afternoon. Run the low-voltage wire under mulch or just at grade level along your pathway. Splice each light fixture into the wire using the tool-free connectors included in most kits. Plug in the transformer and set the dusk-to-dawn timer. Done. For deck accent lighting using the same low-voltage approach, see our deck lighting guide.
Solar Path Lights: Zero Electrical Work
Solar path lights require no electrical connection whatsoever — they charge via the built-in solar panel during the day and illuminate at dusk automatically. A 6-light set costs $40–$120 at any GTA hardware store or online. In Ontario's climate, solar path lights work well from late April through October, but their output in December–February is limited by shorter daylight hours and potential snow coverage on the panels. For year-round pathway visibility, low-voltage hard-wired (via transformer) path lights are more reliable. Pair solar lights with low-voltage for a hybrid approach: solar lights handle summer, low-voltage handles the dark months.
⚠️ All Outdoor Outlets Must Be GFCI-Protected
Ontario's Electrical Safety Code requires every outdoor electrical outlet to be GFCI-protected. If your current outdoor outlet does not have a GFCI device (look for the test/reset buttons on the outlet face, or a GFCI breaker in your panel serving that circuit), it is non-compliant. A GFCI outlet costs $20–$40 and a homeowner can replace an existing outdoor outlet with a GFCI outlet at the same box without an ESA permit. If you hire an electrician to install a new exterior outlet, it will be installed GFCI as a matter of course. This is not optional — insurance companies can deny water-related claims if your outdoor wiring is found non-compliant.
Frequently Asked Questions: Exterior Lighting in the GTA
❓ Can I install exterior lights myself in Ontario?
Yes, with limits. Swapping a porch or garage fixture at the same box, replacing an outdoor outlet with a GFCI outlet, and installing solar or low-voltage (12V) path lighting are all fully DIY-legal. Adding new wiring, new circuits, or new outdoor outlets in new locations requires a licensed electrician and ESA permit.
❓ Do I need a permit for outdoor lighting?
An ESA permit is required for any new wiring or new circuit. Replacing a fixture at the same box requires no permit. Solar and 12V low-voltage systems require no permit. If you do permitted work yourself as a homeowner, you must notify the ESA and schedule an inspection. Permits for homeowner electrical work are $100–$200 in most GTA jurisdictions.
❓ What is GFCI and where is it required outside in Ontario?
GFCI (Ground Fault Circuit Interrupter) cuts power within milliseconds when it detects current leakage — preventing electric shock. Ontario's Electrical Safety Code requires GFCI protection on all outdoor outlets. A GFCI outlet has test and reset buttons on the face. Cost: $20–$40 for parts; $100–$180 installed by an electrician.
❓ Solar vs low-voltage vs line-voltage — which should I choose?
Solar: simplest, no wiring, good for GTA summers, limited in winter. Low-voltage (12V transformer): plug-and-play, no permit, year-round reliability, best for pathways and garden accents. Line-voltage (120V): highest output, most reliable year-round, but fixture swaps require a licensed electrician for new wiring. Match the solution to your needs: solar for decoration, low-voltage for pathways, line-voltage for security and primary lighting.
❓ Can I add an exterior outlet myself in Ontario?
No — adding a new outlet in a new location requires new wiring, which is a licensed electrician + ESA permit job. You can replace an existing outdoor outlet at the same box yourself (must use GFCI). New exterior circuit cost: $500–$1,200 depending on run length and complexity. For summer outdoor projects that need power, see our summer outdoor projects guide.