In Ontario, you have the right to trim branches and roots that cross onto your side of the property line, up to the property line only, at your own expense. You do not need your neighbour's permission to trim what is on your side. But you cannot enter their property, and you cannot do anything that kills or substantially injures the tree. Those are the limits.
Ontario courts have consistently recognized what is called the self-help remedy for encroaching trees. If your neighbour's branches or roots cross onto your property, you are entitled to remove the encroaching portion yourself, up to the property line, without giving notice and without your neighbour's consent. This applies to both branches above ground and roots below it.
The limits are important. You can only trim to the property line, not beyond. You cannot enter your neighbour's property to do the work. The trimming must not kill or seriously injure the tree, meaning you cannot remove such a large portion of the root system or crown that the tree's survival is threatened. If your trimming kills the tree, you may face a civil claim for the tree's value.
On your side of the property line, you can cut back overhanging branches to the fence line or property boundary. You can remove roots that have crossed under your driveway, garden, or lawn up to the property boundary. You pay for the work yourself and you dispose of the debris. The severed branches legally belong to your neighbour and you should offer to return them, though in practice most neighbours will ask you to dispose of them.
What you cannot do is reach over the fence to prune branches on your neighbour's side, even if those branches are the ones causing the problem. You cannot enter their property. You cannot hire someone to go onto their property without their permission. The self-help remedy is strictly limited to your side of the line.
Key limits to the self-help remedy:
The self-help remedy covers the encroachment. It does not cover your right to be compensated for damage the tree has already caused. If roots have cracked your foundation or branches have damaged your fence, those are potential civil claims against your neighbour.
To succeed in a civil claim, you generally need to show that your neighbour knew or should have known the tree was causing damage and failed to act. The best approach is to notify your neighbour in writing with specific details about the damage, ask them to address it, and document everything. If they refuse to act and the damage continues, you may have grounds for a small claims court action or a civil suit for nuisance.
If your neighbour's tree appears structurally dangerous, the self-help remedy is not the right tool. You should notify your neighbour in writing that you believe their tree poses a hazard and ask them to have it professionally assessed. Keep a copy of your letter and note the date it was sent or delivered.
If the situation is urgent and your neighbour is not responsive, you can file a complaint with Toronto Urban Forestry through the City's 311 service. Urban Forestry can inspect trees on private property when there is a complaint about a hazardous condition. They cannot force removal quickly in most cases, but having the complaint on record matters if the tree later falls.
Chapter 813 applies to the tree based on where its trunk is located. A tree with its trunk on your neighbour's property is their protected tree if it meets the 30cm DBH threshold, even if branches hang extensively over your yard. Your neighbour needs a permit to remove it. You still retain your self-help trimming rights on your side, but the overall tree is protected and cannot be removed without a permit.
This matters practically: if you have agreed with your neighbour that the tree should come down and you want to split the cost, your neighbour still needs to apply for the permit and get an arborist report. We handle this type of joint removal regularly and can manage the permit process for both sides.
The self-help remedy comes with a meaningful constraint: you cannot take actions that kill or seriously injure the tree. Ontario courts have interpreted this to mean that the overall vitality and survival of the tree must not be substantially threatened by your trimming. Practical limits include not removing more than one-third of the tree's total live crown, not cutting roots so extensively that the tree's structural stability or moisture uptake is compromised, and not stripping bark or otherwise injuring the trunk while doing the work.
If your trimming does kill or substantially injure the tree, you may be liable to your neighbour for the diminution in the value of their property and the assessed value of the tree. Toronto bylaws impose fines for damage to protected trees, and those fines can apply even if the damage came from the neighbouring property. If there is any doubt about how much you can safely trim, it is worth having an ISA certified arborist assess the situation before you proceed.
The self-help remedy is a legal right, not a relationship strategy. Even if you are fully entitled to trim what is on your side, talking to your neighbour first is almost always the better approach. Let them know what you are planning to do, show them the extent of the encroachment, and give them the opportunity to do the work themselves or agree to share the cost of a professional job. Most neighbours, when they understand the issue, prefer to address it cooperatively.
When a neighbour agrees that work is needed, a joint removal or pruning job handled by one arborist is usually less expensive and more effective than two separate jobs. It also avoids the awkward situation of trimming branches to the fence line and leaving an unbalanced crown on your neighbour's side that looks poor and may create structural issues for the tree.
That said, if a neighbour is unresponsive or refuses to engage, your legal right to trim what is on your side remains fully intact. You do not need their permission and you do not need to go to court to exercise it.
We assess overhanging trees, provide written opinions on trimming scope and risk, and handle full removals with permit management where required. Serving all Toronto neighbourhoods and the surrounding GTA.
Can I legally cut my neighbour's tree branches that hang over my yard in Toronto?
Yes. In Ontario you can trim branches that cross onto your property, up to the property line only. You must do this at your own expense, without entering your neighbour's property, and without killing or seriously injuring the tree. The trimmed branches technically belong to your neighbour and you should offer them back.
My neighbour's tree root is lifting my driveway. Who pays for the repair?
This is a civil matter, not a City matter. The general rule in Ontario is that each property owner is responsible for their own property. If you can demonstrate the neighbour's tree is a nuisance and they refused to act despite written notice, you may have a civil claim. Most disputes at this level are resolved between neighbours or through small claims court.
My neighbour's tree looks like it could fall on my property. Can I force them to remove it?
You cannot force it, but you should notify them in writing and contact Toronto Urban Forestry if the tree poses an imminent hazard. The City can inspect trees on private property when there is a complaint about a hazardous condition. Document your concern in writing to your neighbour before escalating. Having that written notice on record matters if a tree later falls and damages your property.
Can my neighbour's tree still be protected under Chapter 813 if it hangs over my property?
Yes. Chapter 813 protects trees based on where the trunk is located. A tree whose trunk sits on your neighbour's property is their tree and is protected under Chapter 813 if it meets the 30cm DBH threshold. Your trimming rights to the property line remain, but neither you nor your neighbour can remove the whole tree without a permit.
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Whether you need branches trimmed on your side, a full removal with permit work, or a written opinion for a civil dispute, our ISA certified arborists can help. Toronto, North York, Etobicoke, Scarborough and surrounding GTA.