Property Line Disputes in Ontario: Fences, Trees and Your Legal Options
Quick Answer
In Ontario, a dispute over a fence, a tree, or a structure near the property line is governed by a mix of provincial statutes, common law, and municipal by-laws, and the reliable first step is a survey by an Ontario Land Surveyor rather than self-help. A tree whose trunk grows on the boundary between two properties is the common property of both owners under section 10(2) of the Forestry Act, and injuring or destroying it without the other owner's consent can be an offence under that Act. Branches and roots that cross onto your land may typically be cut back to the boundary, but where the trunk sits is what decides who owns the tree. The Line Fences Act sets out a municipal fence-viewer process for cost-sharing disputes, though municipalities may opt out of it and the City of Toronto did so in 2018. Removing or relocating a neighbour's fence yourself may expose you to a damages claim, so the lawful routes are survey, negotiation, the municipal process where one exists, and court as a last resort.
Most boundary problems surface by accident. A contractor drives a stake, a survey arrives with a purchase, or a neighbour replaces an old fence and the new one sits a few inches further over than the last one. A strip of lawn you have mowed for nine years turns out to belong to someone else.
The instinct at that point is to fix it yourself. Move the fence back. Cut the branch. Pull the post. After a difficult conversation over the hedge, it often feels overdue.
It is also the costliest move available. Ontario gives property owners real mechanisms for boundary disputes, and most of them work best before anything has been damaged. This article identifies what they are and which of them apply where you live.
Quick Start: Pick Your Path
Boundary disputes look alike from the outside, but different rules apply to each one. Find the description that matches your situation.
Start with where the line sits, then read the section on structures that cross onto your land.
Go to the section on boundary trees. Where the trunk grows decides almost everything.
This is an encroachment. That section covers your options, and the one option to avoid.
Read the two sections on paying for a fence. What is available to you depends on your municipality.
Where Your Property Line Actually Sits
Fences drift. They get rebuilt on the old post holes, moved for a tree, or set back by a contractor working from a rough guess. After two or three replacements, the fence line and the legal line may sit a surprising distance apart, and neither neighbour has done anything wrong.
The document that settles this is a Surveyor's Real Property Report, a survey plan prepared by a licensed Ontario Land Surveyor showing the boundaries and the structures near them. A court hearing a boundary claim typically expects one. Our lawyers handle property and real estate disputes of this kind across Toronto and the GTA.
Boundary Trees Belong to Both Neighbours
This rule surprises almost everyone. A homeowner who can see half the trunk on their side reasonably assumes they own half a tree. Ontario law treats the whole tree as jointly owned, and joint ownership means neither owner may remove it alone.
The point was tested in Hartley v. Cunningham. A homeowner asked the court to declare her the sole owner of a Norway maple so that she could take it down without her neighbour's agreement. She lost, and the Court of Appeal upheld that result in 2013. The court read "trunk" as the whole stem, from where it grows away from the roots up to where it branches into limbs, not just the slice of it at ground level.
One distinction matters more than any other here. A municipal tree permit is not the same thing as a co-owner's consent. It deals with the city's interest in the tree, not your neighbour's ownership of it.
Branches are treated differently. Where a tree is rooted entirely on your neighbour's side, the common law generally allows you to cut back what crosses onto your property, up to the boundary and no further.
Who Pays for a Fence on the Property Line
A fence viewer is a person appointed by a municipal council under the Line Fences Act to inspect a boundary and issue a binding decision, called an award, about the fence and its cost. Fence viewers are typically municipal staff rather than lawyers, and the process is designed to be used without one.
An award may divide the cost evenly, or differently where an equal split would be unfair. What fence viewers cannot do is decide where the boundary is. A surveyor does that, and if it stays contested, a court does.
Fence Viewers Are Not Available in Every Ontario Municipality
Toronto is the exception that matters most here. The City's own position is that the Line Fences Act, other than section 20 covering former railway lands, does not apply in Toronto, and that Municipal Licensing and Standards no longer accepts applications for line fence viewing. Boundary fence disagreements are left to the neighbours, to free community mediation, or to the civil courts.
Mississauga takes a similar line, telling residents that location and price disputes over a division fence are to be settled between the owners. Fence height and materials remain regulated by by-law almost everywhere, and municipal by-law disputes are their own area of practice. Check your own municipality's position before relying on any fence-viewer process.
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Where the Line Fences Act Still Applies
The fence-viewer process is set by the province but can be switched off by a municipality, so the answer changes at the city limits. Confirmed municipalities only.
| Municipality | Fence viewers | What applies instead | Source |
|---|---|---|---|
| Ontario (general position) | Available | A council appoints fence viewers under the Line Fences Act. An owner may apply to the municipal clerk, and the fence viewers may issue an award apportioning the cost. | ontario.ca |
| City of Toronto (includes Scarborough) | Not available | Toronto opted out in 2018. The City states it no longer accepts line fence viewing applications. Owners are directed to each other, to free community mediation, or to the civil courts. | toronto.ca |
| City of Mississauga | Not used | The City states that disputes about the location or price of a division fence are to be settled between the property owners. | mississauga.ca |
Sources: Government of Ontario, Line Fences Act, R.S.O. 1990, c. L.17 (ontario.ca/page/line-fences-act) · City of Toronto, Fences (toronto.ca) · City of Mississauga, Fences (mississauga.ca). Verified September 16, 2026. Brampton, Vaughan, Ottawa and Durham-region municipalities were not verified and are deliberately omitted — check your own municipality before relying on any fence-viewer process.
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When a Fence, Shed or Driveway Crosses Onto Your Land
Many encroachments are honest mistakes, and many resolve once a survey is on the table and both owners can see the same survey plan. Where one is minor and long-standing, neighbours often settle it with a written agreement or by adjusting the price when one of them sells.
The question people raise most often is whether a neighbour may keep the land because the fence has stood there for years. For most Ontario properties, the answer is no. Section 51(1) of the Land Titles Act provides that no title to, and no right or interest in, land registered under that Act may be acquired by any length of possession or by prescription. The older Registry system works differently, which makes this a question for a real estate lawyer and a title search.
Small Claims Court or Superior Court
A homeowner whose real goal is to get the shed moved may spend a year in the wrong court and win a judgment that moves nothing. Our civil litigation team can advise on which court fits the remedy you want, and we have written separately about the Small Claims Court's $50,000 limit.
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Small Claims Court Compared With Superior Court
The cheaper court cannot give the remedy most boundary claimants actually want, which is an order that the encroachment be removed.
| Small Claims Court | Superior Court of Justice | |
|---|---|---|
| Money limit | Up to $50,000 | No monetary ceiling |
| Can order a fence or structure removed | No — it cannot grant an injunction | Yes — it may grant an injunction |
| Appeal to Divisional Court | Generally only where the amount exceeds $5,000 | Appeals follow the Rules of Civil Procedure |
| Representation | Designed to be used without a lawyer; a paralegal may also appear | A lawyer is typically involved |
| Procedure | Simpler rules, lower court costs | More formal procedure, higher cost |
Sources: Government of Ontario, Small Claims Court monetary limit and appeal limit, O. Reg. 626/00 as amended by O. Reg. 42/25, in force October 1, 2025 (ontario.ca) · Courts of Justice Act · Rules of Civil Procedure, R.R.O. 1990, Reg. 194. Cost and procedure are described in general terms only. Figures verified September 16, 2026.
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A Step-by-Step Path Through a Boundary Dispute
The order below is not a formality. Each step produces something the next step needs, and the evidence becomes harder to assemble once a fence has been moved or a tree has come down.
Most disputes end well before the last step. A survey and a calm written note resolve a large share of them, because neither neighbour knew where the line was and neither intended to take anything.
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Six Steps in an Ontario Boundary Dispute
Each step produces something the next step needs. Court sits at the end, not the beginning.
Sources: Government of Ontario, Line Fences Act guidance (ontario.ca/page/line-fences-act) · Association of Ontario Land Surveyors (aols.org) · City of Toronto community mediation referral (toronto.ca). This sequence is general information about available routes and does not predict any outcome.
Nihang Law Professional Corporation · Law Society of Ontario
Six Mistakes That Make a Boundary Dispute Worse
- Acting before a survey. Without one, you may be in the wrong and not know it.
- Moving or removing the fence yourself. This may convert a dispute you might have won into a damages claim against you.
- Cutting a boundary tree. Consent from the co-owner is the issue, and a city permit does not supply it.
- Assuming fence viewers exist where you live. In Toronto, they do not.
- Treating a long-standing fence as proof of ownership. Under the Land Titles Act, length of possession generally does not create title.
- Waiting. Limitation periods apply to property claims.
If the dispute is about money rather than removal, our guide to representing yourself in Small Claims Court may help.
Frequently Asked Questions
My neighbour built a fence on my property. Can I take it down myself?
Can I cut down a tree that grows on the property line?
Can I trim branches that hang over my yard?
Does my neighbour have to pay half the cost of a fence in Ontario?
Can I ask the City of Toronto to settle a fence dispute with my neighbour?
Can my neighbour claim part of my land because their fence has been there for years?
Do I really need a survey before I do anything?
Talk to a Lawyer Before the Dispute Hardens
Boundary disputes are unusual in one respect. The cheapest moment to deal with one is almost always the moment it appears, before anything has been cut or moved, and while both neighbours still have room to be reasonable.
Nihang Law is a full-service Ontario firm serving Toronto, Scarborough, and the wider GTA, and our litigation lawyers work alongside our real estate team when a boundary problem surfaces during a sale. Qasim Ali, Principal Lawyer at Nihang Law, leads that work. You can contact Nihang Law to talk it through.
Dealing with a fence, tree or boundary problem?
Nihang Law is a full-service Ontario firm serving Toronto, Scarborough, and the wider GTA. Our litigation and real estate lawyers can talk through where the line sits and what your options may be.
Contact Nihang Law
About the author
Qasim Ali
Principal Lawyer · Nihang Law Professional Corporation · Toronto & Scarborough, Ontario · Law Society of Ontario
Qasim Ali is the Principal Lawyer at Nihang Law Professional Corporation, serving clients across Toronto, Scarborough, and the broader Greater Toronto Area. He provides full-service legal representation across immigration, real estate, family law, criminal law, civil litigation, employment law, wills and estates, and business law.
Nihang Law is particularly recognized for its depth in immigration and real estate law — a combination that serves newcomers and growing families navigating both legal systems simultaneously.
Learn more about Qasim Ali →Sources and References
- Forestry Act, R.S.O. 1990, c. F.26, s. 10 — boundary trees as common property and the offence of injuring or destroying one https://www.ontario.ca/laws/statute/90f26
- Line Fences Act, R.S.O. 1990, c. L.17 — right to build a line fence, fence-viewer awards, and the section 26 opt-out https://www.ontario.ca/laws/statute/90l17
- Government of Ontario — Line Fences Act guidance on fence viewers and municipal exemption by-laws https://www.ontario.ca/page/line-fences-act
- City of Toronto — Fences: the Line Fences Act, except section 20, does not apply in Toronto and the City does not accept line fence viewing applications https://www.toronto.ca/city-government/public-notices-bylaws/bylaw-enforcement/fences/
- City of Mississauga — Fences: division fence location and cost disputes are to be settled between property owners https://www.mississauga.ca/services-and-programs/home-and-yard/fences/
- Hartley v. Cunningham, 2013 ONCA 759 (CanLII), affirming 2013 ONSC 2929 — meaning of "trunk" in section 10(2) of the Forestry Act https://www.canlii.org/en/on/onca/doc/2013/2013onca759/2013onca759.html
- Land Titles Act, R.S.O. 1990, c. L.5, s. 51(1) — no title by adverse possession against registered land https://www.canlii.org/en/on/laws/stat/rso-1990-c-l5/latest/rso-1990-c-l5.html
- Boundaries Act, R.S.O. 1990, c. B.10 — confirming a boundary on the public record https://www.ontario.ca/laws/statute/90b10
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