Electrical Wiring for Home Renovations in Ottawa: Permits, Code Requirements & Room-by-Room Planning Guide
🔧 Quick Answer — Renovation Electrical
Every electrical renovation in Ottawa requires an ESA (Electrical Safety Authority) permit — there’s no exception for “small” jobs. A home renovation electrician should be brought in during the planning phase, not after walls are opened. Budget 10–15% of your total renovation cost for electrical work: kitchen rewire $2,000–$6,000, bathroom $1,000–$3,000, basement finish $3,000–$8,000, whole-home renovation $8,000–$20,000+. Getting electrical right during a renovation saves thousands versus retrofitting later.
📞 Renovation planning call: (613) 518-5010
You’ve hired your general contractor, picked out your cabinets, chosen the tile — and then someone asks: “Who’s handling the electrical?” If this is the first time the topic has come up, you’re already behind. Electrical renovation work in Ottawa isn’t something you tack on at the end. It’s the skeleton that everything else hangs on, and it’s governed by strict Ontario Electrical Safety Code requirements that your GC might not fully understand.
This guide from Ottawa Electric Service covers everything Ottawa homeowners need to know about electrical renovation planning: when to bring in a home renovation electrician, what permits you need, what Ontario code requires room by room, and how to budget so electrical doesn’t blow up your renovation timeline or wallet.
Why Your Electrician Should Be Your First Call — Not Your Last
The #1 mistake Ottawa homeowners make during renovations is calling the electrician after the drywall is up. Here’s why electrical needs to be planned before demolition begins:
❌ What Happens Without Early Planning
- Walls closed before wiring is run — costly reopening
- Outlets in wrong locations for appliance layout
- Insufficient circuits — breakers trip constantly
- Failed ESA inspection → tear out and redo
- Renovation delayed 2–4 weeks waiting for electrician
- Budget overrun of $2,000–$5,000+ for rework
✅ With Early Electrical Planning
- Wiring roughed in during framing — clean, fast
- Outlets placed precisely where needed
- Panel capacity confirmed before work starts
- ESA permit pulled, inspection scheduled in advance
- No delays — electrical coordinates with other trades
- Budget stays on track with all-in quote upfront
💡 Pro Tip: Ask your home renovation electrician to do a walkthrough during the design phase — before any demolition. A 30-minute site visit can save weeks of delays and thousands in rework. This is a free consultation at Ottawa Electric Service.
ESA Permits: What You Need and What Happens Without Them
In Ontario, any electrical renovation work beyond simple device replacement (changing an outlet or light fixture for the same type) requires a notification to the Electrical Safety Authority (ESA). Your licensed electrician files this on your behalf.
⚠️ What Happens Without an ESA Permit
Unpermitted electrical work can void your home insurance, create liability if a fire or injury occurs, cause your home sale to fail during a pre-sale electrical inspection, and result in ESA-ordered removal and redo at your expense. The permit cost ($100–$300 for most residential work) is trivial compared to these risks.
Room-by-Room: What Ontario Electrical Code Requires in 2026
When you renovate a room, the electrical in that room must be brought up to current code — even if the rest of the house doesn’t. Here’s what your home renovation electrician needs to install in each space:
🍳 Kitchen Electrical Requirements
Minimum Circuits Required:
- 2× dedicated 20A small appliance circuits (countertops)
- 1× dedicated circuit for refrigerator
- 1× dedicated circuit for dishwasher
- 1× dedicated 40–50A circuit for electric range
- 1× dedicated circuit for microwave (if built-in)
- Separate lighting circuit(s)
Code Requirements:
- GFCI on all outlets within 1.5m of sink
- Split receptacles on countertops (2 circuits)
- No outlet more than 900mm from counter end
- Under-cabinet lighting on separate switch
- Island outlets if counter ≥ 600mm × 300mm
→ Full kitchen wiring guide | Typical cost: $2,000–$6,000
🚿 Bathroom Electrical Requirements
Minimum Circuits Required:
- 1× dedicated 20A GFCI circuit (outlets)
- 1× circuit for lighting
- 1× circuit for exhaust fan (can share with light)
- Dedicated circuit for in-floor heating (if installed)
Code Requirements:
- GFCI on ALL bathroom outlets (mandatory)
- No switches within reach of tub/shower
- Exhaust fan vented to exterior (not attic)
- Lighting rated for wet/damp locations
- Heated floors on dedicated GFCI circuit
→ Full bathroom wiring guide | Typical cost: $1,000–$3,000
🏚️ Basement Finish Electrical Requirements
Typical Circuit Requirements:
- 2–4 general-purpose 15A circuits (outlets)
- 1–2 lighting circuits
- Dedicated circuit for bar fridge/kitchenette
- Dedicated circuit for bathroom (if included)
- Home theatre/office dedicated circuit
Code Requirements:
- GFCI on all unfinished-area outlets
- AFCI protection on bedroom circuits
- Smoke detectors (hardwired, interconnected)
- Emergency egress lighting near windows
- Panel access maintained (1m clearance)
→ Full basement wiring guide | Typical cost: $3,000–$8,000
🏠 Whole-Home Renovation Electrical
Typically Includes:
- 200A panel upgrade ($2,500–$4,500)
- Complete rewire or partial home rewire
- All-new circuits for every room
- Smart home pre-wiring
- EV charger circuit + future-proofing
Code Requirements:
- AFCI on all bedroom circuits
- GFCI on all wet/damp areas
- Smoke/CO detectors on every floor
- Whole-home surge protection (recommended)
- All work to current Ontario Electrical Safety Code
→ Full renovation electrical services | Typical cost: $8,000–$20,000+
Electrical Renovation Costs: What to Budget by Project Type
Rule of thumb: budget 10–15% of your total renovation cost for electrical work. Here’s a detailed breakdown:
Planning a Renovation? Get Your Electrical Quote First.
Free site visit. Detailed all-in pricing. We coordinate with your GC to keep the project on track.
The Renovation Electrical Timeline: When Your Electrician Needs to Be On-Site
Electrical work happens in two distinct phases during a renovation. Miss either one and you’ll face delays:
Phase 1: Rough-In (Before Drywall)
This is when all new wiring is pulled through open walls and ceilings. Your electrician installs junction boxes, runs cable to every outlet/switch/fixture location, connects new circuits to the panel, and prepares for inspection. This phase MUST happen after framing but BEFORE insulation and drywall. Timing is critical — a delay here stalls every trade that follows.
ESA Rough-In Inspection
Before walls can be closed, ESA inspects the rough-in wiring. If anything doesn’t comply, it must be corrected before drywall goes up. Your home renovation electrician schedules this inspection. Typical wait time: 3–7 business days after notification.
Phase 2: Finish (After Drywall & Paint)
After drywall, painting, and trim are done, the electrician returns to install outlets, switches, light fixtures, cover plates, appliance connections, and final panel labelling. This phase is followed by the final ESA inspection and certificate.
Future-Proofing: What to Add While Walls Are Open
When walls are open during a renovation, running additional wiring costs a fraction of what it would cost to add later. These are the upgrades Ottawa homeowners wish they’d added during their electrical renovation:
⚡ EV Charger Circuit
Run a 50A, 240V circuit to the garage now — even if you don’t have an EV yet. Cost during renovation: $200–$400. Cost to add later through closed walls: $800–$1,500+. EV charger details →
📡 Smart Home Pre-Wire
Run neutral wires to all switch boxes (needed for smart switches), Cat6 ethernet to key rooms, and speaker wire for built-in audio. Cost during reno: $300–$800. After: $1,500–$3,000+.
☀️ Solar Panel Conduit
Run conduit from the panel to the attic/roof access point for future solar panel installation. Cost during reno: $100–$300. This saves $500–$1,000+ vs drilling through finished walls later.
🏠 Generator Transfer Switch
Install a transfer switch and outdoor pad connection during the panel upgrade. If you add a standby generator later, the hardest part is already done. Cost during reno: $300–$600.
💡 The Golden Rule of Renovation Electrical: It’s always cheaper to run wire through open walls. If there’s even a 30% chance you’ll want an upgrade in the next 10 years, add the wiring now. The marginal cost is minimal compared to opening walls again later.
How to Choose a Home Renovation Electrician in Ottawa
Not every electrician specializes in renovations. Renovation work requires coordination with other trades, familiarity with open-wall vs. closed-wall wiring methods, and the ability to work within a GC’s schedule. Here’s what to look for:
ESA Licensed & Insured
Verify their licence on the ESA website. If they can’t provide a licence number, walk away. Insurance protects you if something goes wrong during the renovation.
Renovation-Specific Experience
Ask specifically about renovation projects, not just new construction or service calls. Renovation electrical requires different skills — working around existing wiring, adapting to discovered conditions, and coordinating with GCs.
All-In Written Quotes
Your quote should include materials, labour, ESA permit fees, and inspection coordination — not just labour with a vague “materials extra.” Our licensed electricians provide transparent all-in pricing.
GC Coordination
A good home renovation electrician communicates directly with your general contractor to schedule rough-in and finish phases without holding up other trades.
New Construction vs. Renovation Electrical: Key Differences
If you’ve built a new home before, don’t assume renovation electrical works the same way. The challenges are fundamentally different:
7 Costly Electrical Renovation Mistakes Ottawa Homeowners Make
1. Not budgeting for electrical
Allocating $0 for electrical in a $50K kitchen reno. Reality: you’ll need $3K–$6K for proper wiring.
2. Closing walls without inspection
Drywalling over rough-in before ESA inspects. Result: tear it out, fix, re-inspect, re-drywall.
3. Using the GC’s “buddy” electrician
Unlicensed or under-qualified helpers doing electrical. No ESA permit = no insurance coverage if fire occurs.
4. Not upgrading the panel
Adding a kitchen full of new appliances to a 100A panel that’s already at capacity. Recipe for constant tripping.
5. Forgetting outlet locations
Not planning outlet placement with your cabinet/appliance layout. Outlets behind the fridge or inaccessible behind countertops.
6. Skipping future-proofing
Not running EV, solar, or smart home wiring while walls are open. Costs 3–5× more to add later.
7. DIY electrical “to save money”
Unpermitted DIY work voids insurance, fails inspections, and costs more to fix than it would have cost to do right.
For Ontario electrical safety requirements and permit information, visit the Electrical Safety Authority (ESA). For federal home energy incentives that may apply to renovation electrical upgrades, see Natural Resources Canada.
Frequently Asked Questions: Renovation Electrical
Do I always need an ESA permit for renovation electrical work?
Yes, for any work that involves new wiring, new circuits, or panel modifications. The only exception is like-for-like device replacement (swapping an existing outlet or switch for the same type). Even adding a single new outlet requires ESA notification. Your licensed electrician handles the permit process — it’s included in any professional quote.
How much should I budget for electrical in a kitchen renovation?
Budget $2,000–$6,000 for kitchen electrical, depending on scope. A minor kitchen refresh (same layout, new fixtures) might be $1,000–$2,000. A full gut renovation with new appliance locations, island outlets, under-cabinet lighting, and a panel upgrade can reach $4,000–$6,000. This is typically 10–15% of the total kitchen renovation cost.
When during my renovation should the electrician start?
Ideally, your electrician should be consulted during the design phase (before demolition) for planning and quoting. The physical work starts in two phases: rough-in happens after framing but before insulation and drywall (Phase 1), and finish work (installing fixtures, outlets, switches, cover plates) happens after drywall, painting, and trim are complete (Phase 2).
Can my general contractor do the electrical work?
In Ontario, electrical work must be performed by a licensed electrician or a homeowner doing work on their own primary residence (with ESA permits). General contractors are not licensed to perform electrical work unless they hold a separate electrical licence. A good GC will have a trusted electrical subcontractor they work with regularly — but you’re also free to hire your own electrician directly.
Does renovating one room mean my whole house needs to be brought up to code?
No — only the area being renovated needs to meet current code. If you’re renovating the kitchen, the kitchen electrical must comply with the current Ontario Electrical Safety Code, but the rest of the house can remain as-is. However, if the panel can’t support the new load, a panel upgrade may be required, which benefits the whole house.
How long does a renovation electrical inspection take?
The ESA inspection itself typically takes 30–60 minutes. However, scheduling the inspection can take 3–7 business days after your electrician files the notification. This is why planning ahead is critical — if the rough-in inspection isn’t scheduled in time, your drywall crew sits idle. Your electrician should schedule the inspection as soon as rough-in is complete.
What if my panel can’t handle the renovation’s electrical load?
If your current panel doesn’t have enough capacity (common with 60A or 100A panels in older Ottawa homes), a panel upgrade to 200A is needed before or during the renovation. This is actually ideal timing — doing a panel upgrade during a renovation costs the same as doing it standalone ($2,500–$4,500) but gives you the capacity for all your new circuits plus future upgrades.
Should I hire my own electrician or use the one my GC recommends?
Either approach can work. Using the GC’s recommended electrician often means smoother scheduling since they’ve worked together before. Hiring your own gives you more control over quality and pricing. Either way, verify the electrician is ESA-licensed, insured, and experienced with renovation work specifically. Get an all-in written quote regardless of who recommends them.
What happens if old wiring is discovered during demolition?
This is common in Ottawa’s older homes — you open a wall and find knob and tube, aluminum wiring, or junction boxes with improper splices. Your electrician should assess the discovered wiring and recommend whether it needs replacement. If old wiring is found in the renovation area, it must be replaced to meet current code. This can add $1,000–$5,000+ to the project, which is why contingency budgets (10–15% of total) are essential for older homes.
Can I live in my home during a renovation electrical project?
Usually yes. A skilled electrician maintains power to the rest of the home while working on the renovation area. Brief power shutdowns (30–60 minutes) are needed during panel work or circuit transfers, but these are scheduled in advance. For whole-home renovations, there may be extended periods without power in specific areas, but your electrician will plan around essential needs like refrigeration, heating, and bathroom access.
Renovating? Let’s Plan Your Electrical First.
Free design-phase consultation. All-in pricing. ESA permits included. We coordinate with your GC.
Serving Ottawa, Kanata, Nepean, Barrhaven, Orleans, The Glebe, Centretown & all surrounding areas.