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Neighbor's tree over the property line: who's responsible in California?

Overhanging limbs, invading roots, and trees straddling the line are common neighbor disputes. Below is a plain-language overview of the California statutes and court decisions most often cited, plus Sacramento permit rules that still apply, checked against official sources in October 2026. This is general information, not legal advice — for a real dispute, talk to a California real-estate attorney.

Who owns the tree?

• Trunk entirely on one lot: under California Civil Code § 833, trees whose trunks stand wholly on one owner's land belong exclusively to that owner, even if the roots grow into the neighbor's land.
• Trunk on the line: under Civil Code § 834, a tree whose trunk stands partly on the land of two or more adjoining owners belongs to them in common. In practice, a true boundary tree is shared property — neither neighbor should remove or seriously damage it without the other's agreement.

It's ownership of the trunk that matters, not where the branches or roots spread. If you're not sure where the line is, a licensed land surveyor can mark it.

Overhanging branches

California courts have long held that a landowner may cut back branches and roots that extend onto their property, but only up to the property line. In Bonde v. Bishop (1952) 112 Cal.App.2d 1, the court summarized the rule that encroaching limbs or roots may be removed "but only to the boundary line," and quoted older California authority that the neighbor "may not cut down the tree, neither can he cut the branches thereof beyond the extent to which they overhang his soil."

What that means in practice:

• You may trim what's over your side, at your own expense, from your side.
• You generally may not go onto the neighbor's property, or cut beyond the line, without permission.
• You must not kill or destabilize the tree in the process (see below).

Roots — and the duty to act reasonably

In Booska v. Patel (1994) 24 Cal.App.4th 1786, a homeowner had roots from a neighbor's tree cut along the property line, and the tree allegedly became unsafe and had to be removed. The court rejected the idea of an "absolute right" to cut encroaching roots regardless of the harm, holding that the right is tempered by a duty to act reasonably toward the neighbor. Before cutting significant roots or large limbs, it's wise to get a qualified arborist's opinion on whether the cut could kill the tree or make it unstable.

Damaging or removing someone else's tree

California law treats harming another person's tree seriously:

• Civil Code § 3346 sets damages for wrongfully injuring or removing trees on another's land at three times the actual detriment, or twice the actual detriment where the trespass was casual or involuntary or the person had probable cause to believe the land was theirs. Claims must generally be brought within five years.
• Code of Civil Procedure § 733 similarly makes a person who cuts down or injures a tree on another's land without lawful authority liable for treble damages.

Directing a tree crew to cut a tree that isn't solely yours doesn't shift that risk off you.

What if the neighbor's tree damages my property?

Overhang alone doesn't usually entitle you to money. Where a tree actually causes damage — Bonde involved a large limb that fell through a garage — courts have treated the encroachment as a nuisance and allowed damages and an order to abate it. If a neighbor's tree falls on your house in a storm, the practical first step is usually your own homeowners claim; see Tree fell on your house in California? Insurance and next steps.

Shared fences have their own rule: Civil Code § 841 presumes adjoining owners equally share the reasonable cost of maintaining or replacing a dividing fence and requires 30 days' written notice before incurring those costs.

Local permits still apply — even to the side over your yard

• City of Sacramento: under Sacramento City Code ch. 12.56, pruning branches or roots of a "private protected tree" (for example, a native oak 12"+ in diameter, or any tree 32"+ on a single-family or duplex lot) is regulated work that needs a permit, except "minor pruning" — dead wood, or cuts under 2 inches totaling no more than 10% of the crown and roots in 12 months.
• Unincorporated Sacramento County: Sacramento County Tree Permits says permit approval requires the tree owner's consent even if the tree hangs over an adjacent property, and asks for a signed letter from the neighbor authorizing the work when the tree is on their lot.

Details are in Do I need a permit to remove a tree in Sacramento? and, for oaks, Oak tree removal in Sacramento.

A practical way to handle it

1. Talk to your neighbor first, with photos of the problem.
2. Agree in writing on what will be cut, who hires whom, and how costs are split.
3. Check whether a permit is needed before any cutting.
4. Use a licensed, insured tree contractor — verify at cslb.ca.gov.
5. If you can't agree, consider mediation or legal advice before cutting anything major.

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We don't do tree work ourselves. Tell us about your tree and we'll connect you with independent, licensed local tree professionals so you can compare written quotes. Always verify the contractor's license and insurance at cslb.ca.gov.

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