In BC, you generally may trim overhanging branches and encroaching roots back to your property line at your own expense, without entering your neighbour’s land and without harming the tree’s health. The tree belongs to the owner of the land where the trunk stands, and boundary trees are jointly owned. Municipal bylaws can still protect the tree, so check before cutting anything substantial. This is general information, not legal advice.
Overhanging cedars, dropping cottonwood limbs and fir needles filling the gutters cause more neighbour friction in the Fraser Valley than almost anything else. Here is how the rules work, and how to resolve it without wrecking the relationship over the fence.
Who legally owns the tree?
Ownership follows the trunk. If the trunk stands entirely on your neighbour’s land, it is their tree, no matter how far the branches reach over your side or how much of the root system runs under your lawn. If the trunk straddles the surveyed boundary, BC courts have treated it as a boundary tree owned by both parties, and neither side can remove it or cut it back substantially without the other’s consent.
That last category catches people out. Removing or badly damaging a jointly owned boundary tree without agreement can create liability to your neighbour for the value of the tree, and mature trees can be appraised at surprisingly high values. When the trunk position is unclear, a survey plan or existing survey pins settle it. Guessing does not.
What am I allowed to cut on my side?
The common law gives you a right of self-help abatement: you may cut branches and roots that cross the boundary, back to the property line. There are real limits on that right:
- Stay on your own land. You cannot enter the neighbour’s yard, or lean equipment over it, without permission.
- Cut to the line, not past it. Cutting beyond the boundary is trespass against their property.
- Do not destabilize or kill the tree. Severing major structural roots or stripping one whole side of a conifer can make the tree hazardous or kill it, and you can be liable for the damage. This is a genuine risk with cedar hedges and shallow-rooted species.
- Check the bylaw first. Municipal tree protection rules in cities like Abbotsford and the Township of Langley can apply to significant pruning as well as removal. Our guide to tree cutting permits in the Fraser Valley covers which cities regulate what, and you should confirm with your own municipality.
- Nothing near power lines. If the overhanging limbs are anywhere near BC Hydro conductors, stop. Only authorized workers may work close to energized lines.
Technically, cut branches remain the tree owner’s property, so the courteous practice is to offer the wood back rather than dumping it over the fence, which courts have not looked kindly on.
What about roots lifting my patio or blocking my drains?
The same right applies to roots: you may sever encroaching roots at the line, but the destabilization risk is far higher than with branches. Roots are the tree’s anchor. Cutting large structural roots on one side of a mature fir or cottonwood can turn a stable tree into a windthrow hazard pointed at somebody’s house, and the person who cut the roots can end up owning that outcome.
Before cutting anything larger than a garden hose, get a professional opinion. A danger tree assessment can tell you which roots can be cut safely, and sometimes the honest answer is that root pruning would make the tree unsafe, which converts the conversation into a shared removal decision with your neighbour instead.
What should I do if my neighbour’s tree looks dangerous?
Document, notify, and keep copies. The sequence that protects you best:
- Photograph the concern. Dead tops, fungal conks, cracks, a new lean, lifting soil at the base. Our guide to the signs a tree is dangerous lists what actually matters versus what just looks scary.
- Tell your neighbour in writing. Friendly but written: email or text beats a chat at the fence, because it creates a record that they knew.
- Offer a joint assessment. Splitting the cost of a professional opinion is cheap compared to a dispute, and a neutral report often ends the argument by itself.
- Escalate if ignored. Some municipalities act on reports of hazardous trees threatening neighbouring property. For damage that has already happened, BC’s Civil Resolution Tribunal and Small Claims Court handle these disputes; the province outlines options at gov.bc.ca.
If a documented hazard later fails and damages your property, the written notice you sent is what moves the situation from “act of nature” toward the owner’s responsibility. Our guide on what to do when a tree falls on your house covers the insurance side in detail, and the Insurance Bureau of Canada publishes general guidance at ibc.ca.
How do you fix the problem without a dispute?
In our experience most overhang situations end with one crew doing tidy work for both households, because it is cheaper and the result looks better than a hard cut at the property line. Practical approaches that work:
- Share a crew. One mobilization, both sides pruned properly, cost split by agreement.
- Prune for structure, not spite. A straight vertical slice at the boundary line looks terrible and stresses the tree. Proper tree trimming and pruning reduces the overhang while keeping the tree balanced and healthy.
- Fix hedges at the source. For cedar hedge overhangs, coordinated hedge trimming on a regular cycle keeps both faces tight and stops the annual argument.
- Put agreements in writing. Who pays what, what gets cut, who keeps the wood. A text message thread is enough.
The bottom line
You can trim to the line at your own cost, you cannot hurt the tree or cross the boundary, the trunk decides ownership, and written notice is your best protection when a neighbour’s tree worries you. Most disputes dissolve when a professional puts real information in front of both owners. If an overhanging tree or hedge is the problem, get a free estimate and we will quote work that keeps both the tree and the neighbourly relationship intact.
Frequently Asked Questions
Can I cut branches that hang over my property line in BC?
Generally yes, under the common law right of self-help abatement, you may trim branches and roots back to the property line at your own cost. You must stay on your own side, cannot enter the neighbour's property without permission, and cannot cut so aggressively that you destabilize or kill the tree. Talk to your neighbour first, and check whether a municipal tree bylaw protects the tree.
Who owns a tree that sits right on the property line?
A tree whose trunk grows on the boundary itself is generally considered jointly owned by both property owners in BC. Neither owner can remove it or cut it back substantially without the other's agreement. Where the trunk stands entirely on one side, that owner owns the tree, even if most of the canopy hangs over the fence.
My neighbour's tree looks dangerous. Can I force them to remove it?
You cannot force removal yourself, but you have options. Put your concern in writing, share a professional assessment if you have one, and keep copies. If the tree damages your property after a documented warning, that record strengthens any claim. For genuinely hazardous trees, some municipalities will act on a report. Small Claims Court and the Civil Resolution Tribunal handle tree damage disputes in BC.
Whose insurance pays if a neighbour's tree falls on my house?
In most cases, your own home insurance covers damage to your house, and it does not usually matter whose tree it was. A healthy tree felled by a storm is treated as an act of nature. If the neighbour knew the tree was hazardous and ignored warnings, their liability may come into play, which is why written notice matters. Insurers sort recovery between themselves.
Can I make my neighbour pay for trimming their overhanging branches?
Not usually. If you exercise your right to trim back to the line, the cost is normally yours. Neighbours often split costs voluntarily, especially for larger work where hiring one crew for both sides is cheaper. Get any cost-sharing agreement in writing before the work starts, even just by text or email.
Published July 25, 2026 · Last updated July 25, 2026 · Fraser Valley Tree Service