AntoineAsphalt.caProperty line guide
Building a Fence on the Property Line in Ontario
Before building on or near a property line in Ontario, confirm the line from a survey and agree the plan with your neighbour in writing. The Line Fences Act can arbitrate cost sharing where it applies, but it cannot decide where the boundary is. Oakville and Burlington use their own division fence by-laws.
Before building on or near a property line in Ontario, confirm the line from a survey and agree the plan with your neighbour in writing. The Line Fences Act can arbitrate cost sharing where it applies, but it cannot decide where the boundary is. Oakville and Burlington use their own division fence by-laws.
This guide is general information, not legal advice. For boundary disputes, speak with a lawyer or a licensed Ontario Land Surveyor.
How do I find my property line?
Start with your property survey. If you do not have one, or the markers are missing, a licensed Ontario Land Surveyor can locate and stake the line. Fence contractors should build from a confirmed line rather than an old fence, hedge or assumption.
How should I talk to my neighbour about a new fence?
A short conversation before any quote avoids most disputes. Share the layout, height, material and who is paying.
- Walk the line together with the survey
- Agree on height, style and which side faces whom
- Agree on cost sharing and timing
- Put the agreement in writing and both sign it
- Share the utility-locate date and access needs
What fence designs work best on a shared line?
Good-neighbour designs look finished from both sides. Shadowbox and board-on-board fences alternate boards so neither yard faces the rails, and many aluminum and vinyl systems are identical on both faces.
Who pays for a fence between neighbours in Ontario?
Cost sharing depends on where you live.
| Area | Framework | Notes |
|---|---|---|
| Ontario (where it applies) | Line Fences Act | Fence-viewer arbitration for cost disputes; cannot settle where the property line is |
| Oakville | Division Fence By-law 2023-076 | Sets how boundary-fence costs are shared; the Line Fences Act does not apply |
| Burlington | Division Fence By-law 024-2003 | Municipal division-fence rules; zoning sets location and height |
| Hamilton | Check with the City | Confirm Hamilton's current approach before relying on any process |
How do I replace a shared fence?
Treat a replacement like a new fence: confirm the line, agree the design and cost split in writing, and plan removal. If the old fence was not on the line, a replacement is the time to correct it with a survey.
What about trees and roots on the property line?
Trees on or near the line affect post locations. Posts can be shifted, spans adjusted or holes hand-dug to limit root damage. Trees on the line may be jointly owned, so discuss them with your neighbour and check municipal tree rules before cutting roots.
Do I need a utility locate before digging?
Yes. Ontario One Call locates are free and required by law before digging, and should be requested at least five business days ahead.
Frequently asked questions
Can I build a fence right on the property line in Ontario?
Often yes, with a confirmed survey and your neighbour's agreement, subject to local height and zoning rules. Confirm current rules with your municipality before building.
Does my neighbour have to pay half the fence?
Not automatically. Where the Line Fences Act applies, fence-viewers can arbitrate cost sharing; Oakville and Burlington use their own division fence by-laws.
Can the Line Fences Act decide where the boundary is?
No. It can arbitrate cost disputes where it applies but cannot settle where the property line is; a surveyor establishes the line.
Do I need a survey to build a fence?
A survey is the reliable way to confirm the line. If none exists, a licensed Ontario Land Surveyor can mark it.
Which side of the fence faces the neighbour?
Agree it in writing. Shadowbox, board-on-board and many aluminum or vinyl designs look finished on both sides and avoid the question.
Is this legal advice?
No. This guide is general information. For disputes, speak with a lawyer or a licensed Ontario Land Surveyor.
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