Tree Falls on Neighbour's House: Who Pays in Ontario?

A tree comes down and lands on a roof, a porch or a garage. Whether it was your tree or your neighbour's, the first questions are usually the same: who is responsible, and who pays for the repairs?

The honest answer is that it depends on the facts. This article explains the questions that usually matter, how insurance fits in, and the Ontario rules that apply when a fence or a boundary tree is involved.

What to do in the first hours

Before anyone argues about fault, deal with safety and record what happened. A fallen tree can leave damaged wiring, gas lines or unstable branches.

• Keep everyone away from the damaged area until it is safe, and call emergency services if there is a hazard.
• Take clear photos and video of the tree, the stump or roots, the damage and the surrounding yard before anything is moved.
• Note the date, time and weather conditions.
• Make only the temporary repairs needed to prevent further damage, such as a tarp, and keep the receipts.
• Contact your own home insurer promptly and ask what steps they require.
• Tell the neighbour in writing what happened, and keep a copy.

How fault is usually approached

When a tree on one property damages another, the dispute is usually about whether the tree owner did something wrong, or failed to do something reasonable. In plain terms, people often ask whether the tree looked dead, diseased, leaning or rotten, whether anyone had noticed or warned about it, and whether the owner did anything about it.

A healthy tree that comes down in a severe storm is often argued about differently from a tree that was visibly dying for years. Even so, a storm does not automatically end the question, and a warning sign does not automatically settle it. How these ideas apply to your situation depends on the evidence, so a lawyer can confirm where you stand.

If the tree was a shared boundary tree, ownership itself may be shared, which can complicate who is responsible. That is covered below.

Insurance comes first in practice

In many cases the repair is dealt with through home insurance rather than a direct claim against the neighbour. Policies differ in what they cover, what the deductible is, and what they say about tree removal. Read your policy, and ask your insurer how fallen trees are treated.

• If a neighbour's tree hit your house, report the claim to your own insurer and give them the neighbour's contact details.
• If your tree hit a neighbour's house, tell your insurer too, even if the neighbour has not made a demand yet.
• Avoid admitting fault or promising payment before you have spoken to your insurer.
• Keep estimates, invoices and photographs together in one file.

If the insurer disputes coverage, or the damage is larger than the policy covers, that is a good point to speak with a lawyer.

When the tree lands on a fence

Ontario's Line Fences Act has a specific rule: if a tree falls on a line fence, the owner or occupant of the land where the tree stood must immediately remove the tree and repair the fence.

If neighbours then disagree about repairing or rebuilding a fence on the boundary, the Act offers an arbitration process run through the municipality's fence-viewers. It does not apply where one owner has already built or repaired the fence on their own and then asks the neighbour to share the cost. It also does not decide where the property line is.

Two limits are worth knowing. For land in a registered condominium, the condominium corporation, not the unit owner, is treated as the owner. And a municipality may pass a by-law saying the Act does not apply to all or part of it, so check with your own municipality.

When the tree is on the boundary

A tree whose trunk grows on the boundary between neighbouring lands is the common property of the owners of both lands. Injuring or destroying it without the landowners' consent is an offence under the Forestry Act. On conviction, the penalty can be a fine of up to $20,000, up to three months in prison, or both.

So if a boundary tree looks dangerous, do not simply cut it down. Talk to your neighbour, put your concern in writing, and get agreement first. If you are not sure where the trunk sits in relation to the line, a survey is the usual way to find out.

What to do next

• Document everything and notify your insurer.
• Write to the neighbour with a short, factual account and ask for their insurer's details.
• Confirm where the tree stood, using a survey if the location is unclear.
• Check whether your municipality has tree or fence by-laws that apply.
• Speak with a lawyer if there is a dispute about fault, the damage is significant, or the insurer denies the claim.

Local tree-protection and fence by-laws vary, so confirm them with your municipality before removing anything.

Frequently asked questions