Ottawa Committee of Adjustment
When You Need One

The phone call almost always starts the same way: "We just found out our addition needs a variance. Can we still build it?" The answer is usually yes. The Committee of Adjustment exists exactly for situations where a project is good but the numbers do not quite line up with the by-law.

The catch is that the process takes 8-12 weeks, costs around $3,500, and includes a public hearing where neighbours can show up and object. None of that is bad news if you understand what the Committee actually decides on.

Here is how the Ottawa Committee of Adjustment works in practice, what they approve, and what gets rejected.

What the Committee of Adjustment Is

The Committee of Adjustment is a panel of citizen-appointed members, established under Section 44 of the Ontario Planning Act, with delegated authority to grant minor variances under Section 45. They meet on a published schedule (typically twice a month per panel), hold public hearings, and issue written decisions.

Ottawa runs three Committee panels covering different geographic areas. Your application goes to the panel covering your ward. The panel members are not City staff; they are independent citizens with real estate, design, or planning backgrounds.

The Committee can:

• Grant a minor variance from the zoning by-law
• Authorize the extension or enlargement of a legal non-conforming use
• Permit a use similar to a permitted use
• Grant consent for a lot severance (Land Severance Committee, often the same panel)

What the Committee cannot do:

• Rezone your lot
• Override the Ontario Building Code
• Approve a major change that requires a zoning amendment
• Override conservation authority or heritage decisions

The Four Legal Tests

Every minor variance application is decided against four tests, all of which must be met. These are not optional. The Committee will reject an application that fails any one of them.

1. Minor in nature. The variance is small in degree relative to the by-law standard. A 0.3m setback shortfall is usually minor; a 3m shortfall is not.
2. Desirable for the appropriate development of the property. The variance allows the property to be put to a reasonable use that is consistent with the surrounding area.
3. Maintains the general intent of the zoning by-law. The variance does not undermine why that rule exists. A 1.0m side yard variance in a zone where the rule exists for fire separation does undermine the intent. A 1.0m variance in a zone where the rule exists for streetscape does not.
4. Maintains the general intent of the Official Plan. The project is consistent with the broader planning vision for that part of the city.

Notice that "the neighbours don't mind" is not on the list. Neighbour support helps but is not legally decisive. "The neighbours strongly object" is also not legally decisive. The Committee weighs the four tests, then applies judgment.

Costs and Timelines

Current Ottawa Committee of Adjustment fees as of 2026:

• Minor variance application: approximately $3,500 (the City updates fees annually)
• Consent (severance) application: approximately $4,500 plus a deposit
• Refundable deposits and posting fees on top, totalling several hundred dollars

The fee covers the application processing, public notice, planner's report, and the hearing itself. It is non-refundable whether the Committee approves or rejects.

Typical calendar timeline:

1. Week 0: Application submitted, fee paid
2. Weeks 1-2: Application screened for completeness, planner assigned
3. Weeks 3-6: Planner's report drafted, neighbours notified by mail (within 60m), sign posted on property
4. Weeks 7-9: Hearing date scheduled, applicant attends or sends representative
5. Weeks 9-10: Decision issued in writing
6. Weeks 10-12: 20-day appeal period runs (during which any party can appeal to the Ontario Land Tribunal)

If no one appeals, the variance is in effect at the end of the 20-day window. If someone appeals, you are looking at another 6-12 months at the OLT.

What Typically Gets Approved

Across the Ottawa Committee panels, the approval rate for well-prepared applications runs around 85%. The patterns we see approved consistently:

• Front setback shortfalls of 0.5-1.5m in mature-neighbourhood overlays where the existing house already sits forward of the averaging line
• Lot coverage variances of 2-5% over the 35% R1 cap, especially when the addition is in the rear yard
• Side yard 0.9m where 1.2m is required, when matching an existing wall on a 100-year-old structure
• Coach house slightly over 80 m² when the existing detached garage being converted is larger
• Height 11.5-12m where 11m is allowed, for steeper roof pitches that match neighbourhood character
• Rear yard 6m where 7.5m is required, for additions on shallow lots with existing layouts

The common thread: the variance is a small numerical relaxation, the property is otherwise consistent with the zone, and the project does not push impacts (shadow, overlook, drainage) onto neighbours.

What Typically Gets Rejected

The 15% that do not get approved have predictable reasons:

• Lot coverage 50% in an R1 35% zone. That is not minor; that is a different zone in disguise.
• Height 14m in an 11m zone for a true third storey. That is asking for R3 or R4 zoning under the cover of a variance.
• Multiple variances stacked where each is small but the combined effect changes the character of the lot. The Committee will treat the package, not the parts.
• Variances driven by a use that the zone does not permit. The Committee cannot grant a use variance that effectively rezones.
• Neighbour-impact variances where the project causes real overlook, shadow, or drainage problems and the applicant has not addressed them.
• Heritage-conflict variances in HCDs where the proposal does not respect the district guidelines.

"The Committee is not a path around the rules. It is a relief valve when the rules produce a result the rules did not intend. If your project is genuinely contrary to the zone, you need a zoning amendment, not a variance."

Three Real Ottawa Examples

Approved: Glebe rear addition

Owner of an 1890s semi in the Glebe wanted a 280 sq ft rear kitchen addition. Existing house already covered 33% of the lot; addition pushed coverage to 38.5%. R3 zone limit was 35%. Variance for 3.5% extra coverage. Approved at first hearing, no appeals. The addition is in the rear, not visible from the street, and consistent with what neighbours had done.

Approved: Westboro coach house

R1 lot, owner wanted to build a 95 m² coach house (one-bedroom unit over a garage) where the by-law caps detached additional units at 80 m². Variance: 95 m² maximum gross floor area. Approved. The Committee accepted that 80 m² was originally calibrated to typical garage footprints, and this lot's existing detached garage was already 90 m².

Rejected: Hunt Club height variance

R1 lot in Hunt Club, owner wanted to add a true third floor with full ceiling heights, total height 14.2m where 11m was the cap. Application rejected. The Committee found the variance was not minor (29% over), would set a precedent in a stable single-family neighbourhood, and was inconsistent with the intent of the by-law's height limit. Owner could have approached this differently with a partial third storey under the 11m envelope.

How to Prepare a Strong Application

An approval is far more likely when the application package addresses the four tests directly and proactively. What we include in every application:

1. Site plan showing existing conditions, proposed conditions, and all dimensions including the variance
2. Floor plans and elevations showing the proposed building
3. Planning rationale letter walking through each of the four legal tests with specific facts
4. Photographs of the existing house and adjacent properties
5. Streetscape elevation showing the proposed addition next to the neighbours
6. Shadow study if there is any concern about overshadowing neighbours' yards (especially relevant in older mature areas)
7. Letters of support from immediate neighbours where possible

An application supported by a planning rationale and clean drawings is treated as a serious request. An application that is just a sketch and a fee gets the same scrutiny but generates more questions.

Appeals to the Ontario Land Tribunal

Either party can appeal a Committee decision to the Ontario Land Tribunal within 20 days of the written decision. The OLT is a more formal hearing with sworn evidence and often legal counsel.

For applicants whose variance was rejected, an appeal is realistic but expensive: the private legal and planner fees are significant, and the calendar time runs 6-12 months. For neighbours appealing an approval, the same costs apply.

Most Ottawa minor variance decisions are not appealed. When they are appealed, the OLT often defers to the Committee's reasoning unless there is clear planning error.

The Practical Decision

If your project needs a variance:

1. Confirm the variance amount with a BCIN designer or planner before applying
2. Confirm the four legal tests can be argued cleanly
3. Build the $3,500 fee and 12-week delay into your project plan
4. Talk to your immediate neighbours before the public notice goes out
5. Prepare a real application package, not a one-page sketch

For most Ottawa renovations a minor variance is a manageable detour, not a project-killer. We file 20-30 applications a year on behalf of clients and the success rate when projects are properly screened up front is high. If you want a screening done on your specific project, the lot feasibility review at our permits page includes a yes/no on whether you will need a variance and roughly how strong the application would be.