In short
- HomeStars' Ottawa basement guide (2026) puts electrical upgrades, panel work and new circuits included, at $1,500–$5,000.
- The City requires a building permit to finish a basement. ESA's notification of work is a separate filing; a wired finish needs both.
- ESA inspects the rough-in before insulation, vapour barrier or drywall cover the wiring.
- ESA's 2026 contractor fee for a renovation runs from $46 for 1–10 outlets to $201 for 41 or more.
Typical prices in Ottawa
| Job | Typical range | Notes |
|---|---|---|
| Basement electrical upgrades, panel and new circuits | $1,500–$5,000 | HomeStars Ottawa basement guide, 2026 |
| New wiring, larger renovation | $2,500–$6,000+ | HomeStars Ottawa electricians page |
| Electrician's hourly rate, Ottawa | $100–$160 | HomeStars Ottawa electricians page |
| Outlet or switch, each | $150–$250 | HomeStars Ottawa electricians page |
| ESA notification, renovation | $46–$201 | ESA 2026, contractor rate, by outlet count; $105–$256 with service work |
| City building permit, alterations | $12.75 per $1,000, minimum $117 | City fee schedule, on the whole project’s value |
Sources. HomeStars, 2026 Basement Renovation Cost Guide For Ottawa, published 30.06.2026, seen 29.10.2026. HomeStars, Electricians in Ottawa, cost section, seen 29.10.2026. ESA, 2026 Residential Fees Quick Reference Guide, fees as of 01.04.2026, seen 29.10.2026. City of Ottawa, Comprehensive Building Code fee schedule, seen 29.10.2026. Permits and inspections: City of Ottawa, Finishing a basement, City of Ottawa, Adding an apartment (additional dwelling units) and ESA, Notifications and Inspections, seen 29.10.2026. Circuit rules: ESA, Bulletin 26-29-6, ESA, Bulletin 26-18-15 and ESA podcast, Episode 3, AFCI and GFCI transcript, seen 29.10.2026. Water and alarms: ESA, Flood safety, ESA, Guideline for electrical installations exposed to water and Ontario, Carbon monoxide alarm rules for existing homes, seen 29.10.2026. Contractors and contracts: ESA, Finding the right contractor, ESA, Identifying an unlicensed electrical contractor and Ontario, guide for home renovation businesses, seen 29.10.2026.
Three basements, three sets of paperwork
- An open rec room. Lights, outlets, a TV wall. The City lists 5 business days for the first pass of a basement permit.
- Added rooms. A bedroom, office or bathroom means more circuits and a fan. ESA’s Bulletin 26-29-6 cites the rule that outlets within 1.5 m of a sink, tub or shower need Class A ground-fault (GFCI) protection.
- A separate apartment. The City requires a building permit to add a unit, with 15 business days for the first pass, and advises telling your insurer early. Say it in the request from the start.
Circuits by what each room will hold
An electrician prices circuits by what plugs into them, so list the loads. ESA’s technical advisor says the 2015 code extended arc-fault (AFCI) protection to almost every receptacle circuit in a home, and Bulletin 26-18-15 calls for the combination type. Outlets added to an existing circuit need AFCI on the extension too. The HomeStars Ottawa guide prices a basement office with “a dedicated electrical circuit or two”. Electric baseboards add load and controls; see baseboard heaters. For the ceiling, pot lights covers layout and dimmers.
The panel
A photo of the open panel shows how many spaces are free and what breakers it takes. When spaces run out, the options are a subpanel or a larger service. ESA’s fee guide charges nothing extra for a subpanel inspected with the rest of the job. Electric heat counts in the calculated load that sizes the service; 100 A or 200 A explains the method.
Two inspection systems, one sequence
The City and ESA each list their own stages. The order below follows the construction stages; the two final inspections are booked separately with each body.
- City framing, at completion of structural framing.
- ESA rough-in, once all branch wiring and outlet boxes are in, before insulation, vapour barrier or drywall hide them.
- City insulation and vapour barrier, at completion of that work.
- ESA final, after the work is complete and any defects are corrected. A failed item comes back as a defect notice.
- City final, as listed on the permit.
The City asks for 48 hours’ notice to book its inspector and warns that a missed inspection can mean uncovering the work. ESA issues the Certificate of Acceptance to whoever filed; ask for a copy. More: ESA permits.
What the wiring costs
HomeStars’ Ottawa basement guide puts electrical upgrades at $1,500–$5,000 inside a whole-basement range of $35,000–$95,000. Its Ottawa electricians page lists $2,500–$6,000+ for new wiring on larger renovations and $150–$250 per outlet. The ESA fee at the 2026 contractor rate: $46 for 1–10 outlets, $92 for 11–30, $143 for 31–40, $201 for 41 or more. The City permit is billed at $12.75 per $1,000 of project value, minimum $117. Circuit count, panel work and closed ceilings move the price most.
Water and alarms
ESA advises staying out of a basement where water has reached the outlets, baseboard heaters or furnace, or is near the panel, and calling the utility to cut power. Its guideline says breakers, GFCIs, AFCIs, smoke and CO alarms that were submerged must be replaced. Put the panel, pump and heaters on your sketch.
What the quote should list
- Each circuit, what it feeds, and its AFCI or GFCI protection
- Panel work as its own line
- The ESA fee and the 7-digit ECRA/ESA licence number; ESA calls an estimate missing either a red flag
- Who books each inspection
In Ontario, a contract over $50 needs a written agreement, and the bill can exceed the estimate by 10% at most unless you sign a change.
Who you are dealing with
Ottawa Electric Desk passes your basement request to one independent local electrical company. That company calls you back, prices the wiring and does the work.
Questions to ask the company
- How many new circuits do you plan, and what does each one feed?
- Does my panel have free spaces, and what is the plan if it runs out?
- Who books the ESA rough-in and final inspections?
- Are the ESA fee and your 7-digit ECRA/ESA licence number on the estimate?
- Which lines could change once the layout moves or a wall is open?
Have this ready for the call
- A sketch of the planned rooms, marking the TV, desk, bar fridge or workbench
- A photo of the open panel showing breaker labels and empty spaces
- The stage: bare concrete, framed, or framed with plumbing roughed in
- Your City permit number and drawings, if you have them
- Whether a bathroom, sump pump or separate apartment is planned
Questions people ask
Do I need a City permit and an ESA notification?
Yes. The City requires a building permit to finish a basement. ESA says almost all electrical work is reported through a notification filed before work starts, separate from the building permit. Anyone you hire for it must by law be a Licensed Electrical Contractor.
Does a bar fridge in the basement need anything special?
ESA’s technical advisor says a fridge outside a kitchen goes on an arc-fault (AFCI) protected circuit. A sink and a fridge fall short of a kitchen; that takes the full set of kitchen circuits.
What about the sump pump outlet?
The same ESA advisor lists a dedicated sump pump on a single receptacle among the few AFCI exceptions. Show the pump and its outlet in your photos.
My panel has no arc-fault breakers. Can it take new circuits?
ESA Bulletin 26-29-6 lets older panels pair a branch or feeder AFCI breaker with an AFCI receptacle at the first outlet. The company picks the method after seeing the panel.
Does the basement need a carbon monoxide alarm?
Since January 1, 2026, Ontario requires a CO alarm on every storey of a home with a fuel-burning appliance, a fireplace or an attached garage, plus one near each sleeping area. Hardwired, battery and plug-in alarms are all allowed.
