Thinking about renovating or building in Ottawa? Don’t pick up the hammer just yet.
Before construction begins, there’s one important question to answer.
Do you need a building permit?
The answer depends on what you’re changing, where you’re building, and how the work affects your home.
As a general rule, projects that alter the structure, add living space, or change plumbing systems will require a building permit. Cosmetic updates, like painting or replacing flooring, usually do not. Electrical work follows a separate approval process through the Electrical Safety Authority.
The details can get a little more complicated from there, which is why it’s worth confirming your project’s requirements before drawings are finalized, not after construction is underway.
That’s where experience comes in. Since 1979, Campanale has been navigating the permit process as part of every custom home and renovation we take on. Our in-house team handles the drawings, the submissions, and the back and forth with the City.
With 47 years of experience and dozens of communities across Ottawa, navigating permits is simply part of how we build.
When Do You Need a Building Permit in Ottawa?
Ontario’s Building Code Act requires a permit before most construction, renovation, or demolition work begins. In Ottawa, that’s enforced by Building Code Services at the City.
Here’s what homeowners in Ottawa ask about most. If your project isn’t listed, check with the City or your builder before starting work.
| Project | Permit? | What to Know |
| New home construction | Yes | Complete permit drawings and any required designer or engineering documentation must be submitted for review (City of Ottawa) |
| Home addition | Yes | Structural and zoning review may apply alongside the building permit |
| Structural wall changes | Usually yes | Engineering drawings are often required for load-bearing walls |
| Basement renovation | Depends | Finishing a basement into livable space differs from cosmetic upgrades |
| New or enlarged windows and doors | Depends | Enlarging an opening usually triggers a permit, a like-for-like swap usually doesn’t |
| Kitchen renovation | Depends | Cosmetic updates usually don’t need a permit, moving plumbing or walls does |
| Bathroom renovation | Depends | Same logic as kitchens, layout and plumbing changes are the trigger |
| Deck | Depends | Decks 24 inches (600 mm) or more above grade generally need one, and any deck at a main entrance needs one regardless of height |
| Demolition | Yes, separate permit | Additional fees apply if the property is subject to the Demolition Control By-law or Heritage Act |
| Plumbing work only | Yes, separate permit | A standalone plumbing permit applies when no other construction is involved |
| Painting, flooring, cabinetry | Usually no | Cosmetic, like-for-like work generally doesn’t require a permit |
What Projects Commonly Require a Permit?
New Home Construction
Starting from scratch? Start with a permit.
Building a new home in Ottawa always requires a building permit, calculated on the size and classification of the home rather than a flat renovation rate. Complete permit drawings, along with any required designer or engineering documentation, need to be submitted for review before construction can begin. Permitting is part of the overall build timeline from the start.
Home Additions and Structural Changes
Knocking down walls? This is where things get serious.
Additions, removed or altered load-bearing walls, and new structural openings fall under the same building permit process as new construction. Engineering review is common when a wall is load-bearing, since the City needs to confirm the change won’t compromise the structure.
Major Interior Renovations
Not every renovation needs a permit, but the big changes might.
Finishing a basement into livable space, reconfiguring a kitchen layout, or moving a bathroom can require a building permit when the work involves structural or plumbing changes. Electrical work is handled separately through the Electrical Safety Authority. A cosmetic refresh of the same rooms, new cabinets, new flooring, a fresh coat of paint, usually doesn’t need a permit.
Plumbing and Other Building Systems
Because not everything happens under the same permit.
Plumbing work on its own is covered by a separate plumbing permit rather than a full building permit, and it becomes part of a larger building permit when it’s one piece of a bigger renovation. Electrical work is handled separately no matter the size of the project. Almost all electrical work in Ontario requires a Notification of Work filed with the Electrical Safety Authority, and a City building permit does not replace that requirement. A Licensed Electrical Contractor normally files the notification and arranges the required inspection.
What Renovations Usually Don’t Require a Building Permit?
Not every renovation needs the City’s stamp of approval.
Painting the walls? New flooring? Swapping out the cabinets? You may be in the clear. If you’re not touching the structure, plumbing, or electrical systems, you can usually get straight to the fun stuff without a building permit. The City of Ottawa lists several projects that don’t require one, including cosmetic updates like these. Low, freestanding decks are often exempt too.
The real distinction isn’t how much a project costs. It’s what’s physically being changed. A $40,000 kitchen refresh with no wall removed and no plumbing moved can need no permit at all, while a $5,000 wall removal can need a full application.
Building Permit vs. Other Approvals in Ottawa
A building permit isn’t always the only approval a project needs.
- Zoning and minor variances. If a project doesn’t meet current zoning rules, a setback or height limit, for example, it may need approval from the Committee of Adjustment before a building permit can move forward. This is a separate process from Building Code Services, and an approved variance still requires its own building permit afterward.
- Heritage properties. Homes designated under the Ontario Heritage Act, or located in a heritage conservation district, may need heritage approval for exterior changes. Heritage approval doesn’t replace a building permit, the two run alongside each other.
- Tree removal. Ottawa’s Tree Protection By-law requires a permit to remove a “distinctive tree,” defined as 30 centimetres or more in diameter on most private urban lots of one hectare or less. This can affect additions or landscaping plans on established lots with mature trees.
Confirming these early, before drawings are finalized, avoids redesigning a project partway through the permit process.
How the Ottawa Building Permit Process Works
1. Confirm what your project needs. Structural changes, additions, and new living space typically need a full building permit. Zoning, heritage, or tree approvals may also apply.
2. Prepare drawings and supporting documents. Complete, accurate drawings help prevent avoidable delays during review.
3. Submit the application. Most applications go through the My ServiceOttawa portal, though in-person applications are available at a Building Code Client Service Centre.
4. City review. The City reviews the application against the Ontario Building Code and Ottawa’s zoning by-law, and issues a deficiency letter if anything is missing.
5. Respond to deficiencies. If the City identifies missing information or deficiencies, permit issuance is delayed until the requested information is submitted and compliance is confirmed.
6. Permit issuance. Building permit fees are due when the application is submitted, and any additional outstanding fees or charges, such as development charges, must be paid before the permit is issued. Construction can’t legally begin until that happens.
7. Inspections during construction. Building Inspectors check the work at set stages, and approved drawings need to be available on site for each one.
We walk through how this fits into a full build in Custom Home Timeline in Ottawa, where permitting is one phase among several.
How Long Does a Building Permit Take in Ottawa?
So, how long does the permit process actually take? That depends on how ready your application is when it lands on the City’s desk.
For a complete application, the City’s published review targets are 5 business days for small homeowner projects like decks, sheds, and garages, and 10 business days for houses, including detached, semi-detached, and row houses.
But there’s an important little asterisk: those timelines are for the first review, not a guaranteed approval date. If the City finds deficiencies, issuance is delayed until the requested information is submitted and compliance is confirmed, so the real timeline depends heavily on how complete the submission is on day one. A complete, accurate submission reduces avoidable delays, while missing information or revisions can extend the process well past the City’s initial review target.
How Much Does a Building Permit Cost in Ottawa?
Okay, but what’s this going to cost?
Ottawa uses different fee structures for new construction and for renovations that don’t add floor space.
According to the City’s 2026 fee schedule, alterations and renovations with no new gross floor area are charged $12.75 per $1,000 of construction value, with a minimum fee of $117. A standalone plumbing permit is a flat $117.
For new construction and additions, the fee is based on gross floor area and building type rather than the renovation rate. As an example, the City’s own fee schedule shows a two-storey detached home with a finished basement working out to $2,668.45 in permit fees, while a rear addition combined with interior alterations on an existing home comes to $1,358.59.
These are City-calculated figures, not estimates, though the final fee for any specific project depends on its actual construction value and floor area. These figures cover the building permit itself.
Depending on the project, separate planning, heritage, demolition, or development charges may also apply.
What Happens If You Renovate Without the Required Permit?
Skipping the permit might feel like a shortcut, but it can create a much longer to-do list later. Depending on the circumstances, renovating without a required permit can lead to:
- A stop-work order until a permit is obtained
- Being required to apply for a permit retroactively, sometimes after the work is already complete
- Having completed work opened up so an inspector can confirm it meets code
- Complications at resale, since buyers and lawyers often request permit and compliance records for structural or system changes
- Insurance concerns if unpermitted work contributed to a claim
The simplest way to avoid all of this is to confirm permit requirements before construction starts.
Who Is Responsible for Getting the Building Permit?
Short answer: the homeowner ultimately owns the responsibility, but you don’t necessarily have to handle the paperwork yourself.
The property owner is responsible for making sure the required permit is obtained, even when a contractor, designer, or builder applies as an authorized agent. Builders also have legal responsibilities under the Building Code Act, including ensuring construction doesn’t proceed without the required permit and that the work follows the approved plans. In practice, homeowners often have their builder coordinate the application on their behalf.
How Campanale Handles Permits as Part of the Building Process
You’ve got enough to think about when building or renovating. Permits shouldn’t be another thing on your to-do list.
Building or renovating with Campanale means permits are handled alongside design and construction. Our in-house team prepares drawings, submits applications, and follows up on revisions as part of the build, so homeowners aren’t managing the permit process separately.
We’ve been doing this across Ottawa since 1979. From Prince of Wales on the Rideau and The Hunt Club Classics to Longfields Station in Barrhaven and Callahan Estates in Arnprior, Campanale has built communities in neighbourhoods across the region, each one requiring its own set of permits, approvals, and coordination with the City.
It’s all part of the Campanale Advantage.
Our team works across design, permitting, and construction together, so homeowners get one point of contact for the entire process. You focus on the vision. We’ll handle the paperwork that gets it there.
Planning a Custom Home or Renovation in Ottawa?
Start with a conversation about your property, your plans, and what approvals your project will need.
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Frequently Asked Questions
Do I need a permit to renovate my kitchen in Ottawa?
Only if the renovation changes structure, plumbing, or layout. A cosmetic update with no walls removed and no plumbing moved usually doesn’t need a permit.
Do I need a permit to finish my basement in Ottawa?
Usually, yes. Finishing a basement commonly involves framing and other construction that requires a building permit. Any electrical work follows the separate ESA notification and inspection process.
Do I need a permit to build a deck in Ottawa?
Decks attached or adjacent to the home generally require a permit when the walking surface is more than 24 inches (600 mm) above grade. Different size rules apply to freestanding decks, and a deck providing the main entrance requires a permit regardless of height.
How long does it take to get a building permit in Ottawa?
The City’s review targets are 5 business days for small homeowner projects and 10 business days for houses, though that covers the first review of a complete application, not total approval time.
How much does a building permit cost in Ottawa?
Renovations with no new floor area are charged $12.75 per $1,000 of construction value, with a $117 minimum. New construction and additions use a separate rate based on floor area and building type.
Can my builder apply for the permit on my behalf?
Yes, a builder can apply as an authorized agent. The property owner remains responsible for the project meeting all permit requirements.