Neighbour's Shed or Pool Too Close to the Property Line in Ontario: What Are Your Options?

You measure it twice because you don't want to be that neighbour, but the numbers hold: the new shed, or the pool deck, sits closer to your shared boundary than the local rules allow. Before you say anything, it helps to understand which of two very different problems you're actually looking at — because the fix is not the same for both.

Two Different Problems That Get Confused

A zoning setback violation means the structure doesn't comply with the municipality's zoning bylaw requirement for how far a building, shed, deck, or pool must sit from the property line — even though the structure is entirely on the neighbour's own land. This is a bylaw compliance issue between the neighbour and the municipality.

An encroachment (a form of trespass) means part of the structure — a footing, an eave, a fence, the pool coping — actually crosses onto your land. This is a private property rights issue between you and the neighbour directly, regardless of what any zoning bylaw says.

The two can overlap (a shed can both violate setback rules and physically encroach), but they call for different action, and it's worth confirming which one you're actually dealing with before you pick a path.

Step 1 — Confirm the Property Line

Before raising anything, get certainty about where the actual boundary sits. A copy of your property survey (if you have one), or a fresh survey from an Ontario land surveyor, is the only reliable way to confirm whether a structure crosses the line or simply sits close to it on the neighbour's own side.

Step 2 — If It's a Setback Violation: Go to the Municipality

Setback requirements come from the local zoning bylaw, and enforcement is a municipal function, not something you resolve through a private lawsuit in the first instance.

• [ ] Check the applicable zoning bylaw's setback requirements for accessory structures (sheds, pools, decks) in the relevant zone
• [ ] Confirm whether the structure needed a building permit, and whether one was obtained
• [ ] File a complaint with the municipality's bylaw enforcement or zoning department
• [ ] Provide measurements, photos, and, if available, survey information
• [ ] Follow up — municipalities generally investigate and, if a violation is confirmed, can order compliance or removal, though timelines and follow-through vary by municipality

Keep in mind that some setback non-compliance can be legalized after the fact if the municipality grants a minor variance, so a complaint doesn't automatically guarantee removal — it triggers a review.

Step 3 — If It's an Encroachment: Deal With the Neighbour First

If a structure genuinely crosses onto your land, this is a property rights problem between you and the neighbour, and the municipality is unlikely to resolve it for you.

1. Raise it directly and in writing, with the survey evidence attached.
2. Propose a resolution: removal, relocation, or — if you're both comfortable with the structure staying — a formal, registered agreement (such as a licence or easement) rather than an informal handshake.
3. If the neighbour refuses to move it or negotiate, a civil claim for trespass may be the next step, potentially including an application for a mandatory order requiring removal.

Courts can order removal of an encroaching structure, but as with any injunction-style remedy, the court weighs the circumstances and has real discretion over the outcome and timing — it isn't automatic.

What Doesn't Work Well

Confronting a neighbour without a survey in hand tends to go in circles — everyone has an opinion about where the line "really" is, and opinions don't settle it. Similarly, assuming the municipality will act quickly on a setback complaint, or that it will order outright removal rather than allow a retroactive variance, sets up disappointment. Get the facts pinned down first.

Frequently asked questions