You need a minor variance when your proposal complies with the use permitted by zoning but deviates slightly from a numerical standard such as setback, height, or lot coverage, and the deviation passes the four-part test. You need a zoning by-law amendment (rezoning) when you want a use the zoning does not permit, or a change too large to be considered minor. A minor variance is decided by the Committee of Adjustment in weeks for a few thousand dollars; a rezoning goes to council over 12 to 24 months and costs far more.
This is the most common and most consequential fork in Ontario development. Choose a minor variance when you actually need a rezoning and the Committee of Adjustment refuses; choose a rezoning when a variance would have done and you spend a year and tens of thousands of dollars you did not need to. Getting the fork right at the start is worth more than almost any later optimization.
A minor variance adjusts a number within a use the zoning already allows. A zoning by-law amendment changes what the zoning allows. If your building is a permitted use and you are 0.6 metres short on a rear setback, that is variance territory. If you want apartments on a site zoned for detached houses, no variance can grant that; you need to rezone.
| Factor | Minor Variance | Zoning By-law Amendment |
|---|---|---|
| Decided by | Committee of Adjustment | City Council |
| Legal basis | Planning Act s. 45 | Planning Act s. 34 |
| Use | Must already be permitted | Can change the permitted use |
| Scale of change | Minor deviation from a standard | Any change, including major |
| Typical timeline | Weeks (about 6 to 12) | 12 to 24 months |
| Typical cost | Low (hundreds to low thousands in fees) | High (large fees plus full study set) |
| Appeal | Ontario Land Tribunal | Ontario Land Tribunal |
Not sure which application your site needs? PreBuildIQ checks your address against the zoning and tells you whether a variance or a rezoning fits, in 60 seconds.
Check my site →A minor variance is not granted just because it is small. Under Section 45(1) of the Planning Act, the Committee of Adjustment must be satisfied on all four of the following, and failing any one is grounds for refusal:
The word minor is not only about size. A 10% setback reduction can be refused if it undermines the intent of the by-law, and a larger deviation can pass if it does not. This is why some applicants with a technically small variance still lose, and why the decision should be tested against all four criteria before filing.
Some things a Committee of Adjustment cannot do, no matter how sympathetic. It cannot permit a use the zoning prohibits. It cannot grant a change so large it is really a rezoning in disguise; committees and the Ontario Land Tribunal reject variances used to sidestep the rezoning process. And it cannot amend the official plan. If your proposal needs any of those, it is a zoning by-law amendment, often paired with an official plan amendment.
If the change is to a number and the use already fits, start with a variance. If the change is to what you are allowed to build at all, it is a rezoning. When a deviation is large enough that staff might call it not minor, budget for the risk that it is bumped to the rezoning path.
The gap is large. A minor variance is decided by the Committee of Adjustment in roughly 6 to 12 weeks, and the required documentation is modest. A zoning by-law amendment runs 12 to 24 months, requires a full set of supporting studies, and carries application fees that in larger municipalities reach the tens of thousands. Choosing the wrong path does not just cost the filing fee; it costs the carrying time on the project.
A minor variance adjusts a numerical standard, such as setback or height, within a use the zoning already permits, and is decided by the Committee of Adjustment. A zoning by-law amendment changes what the zoning permits, including the use, and is decided by council. A variance takes weeks and costs little; a rezoning takes 12 to 24 months and costs far more.
If your use is already permitted and you only breach a number like setback, height, or lot coverage by a modest amount, you likely need a minor variance. If you need a use the zoning prohibits, or a change too large to be minor, you need a zoning by-law amendment. Confirm the zoning permissions for your address first.
Under Section 45(1) of the Planning Act, a minor variance must be minor, desirable for the appropriate development of the land, and maintain the general intent of both the official plan and the zoning by-law. The Committee of Adjustment must be satisfied on all four; failing any one is grounds for refusal.
No. A minor variance cannot permit a use the zoning prohibits. It can only vary numerical standards within a permitted use. To change the permitted use, you need a zoning by-law amendment, often together with an official plan amendment.
Yes, substantially. A minor variance is typically decided by the Committee of Adjustment in about 6 to 12 weeks, while a zoning by-law amendment usually takes 12 to 24 months and requires a full set of supporting studies. Choosing the correct path saves both fees and carrying time.
PreBuildIQ checks your address against the zoning by-law and tells you whether your proposal fits a minor variance or needs a rezoning, along with the studies each path requires, in 60 seconds.
Run a site report →