What Are Pennsylvania's Tree Laws for Neighbors?
Pennsylvania's tree rules between neighbors come mostly from court decisions and a few statutes, and the core points are consistent across the sources below. The Pennsylvania Legislator's Municipal Deskbook (6th edition, 2020) says a landowner may trim a neighbor's branches back to the property line even if they are not causing damage, and may recover reasonable trimming costs from the tree's owner, citing Jones v. Wagner (1993) and Koresko v. Farley (2004). When a tree falls, liability generally turns on whether the owner knew or should have known the tree was in dangerous condition.
Cutting down a tree that is not yours can cost far more than the tree. Under 42 Pa.C.S. § 8311, a person who cuts or removes another person's timber without consent owes three times its market value if the cutting was deliberate, two times if it was negligent, and market value if the person had a reasonable basis to believe the land was theirs, plus the costs of valuing the timber, complying with erosion control rules and any surveys. This guide explains overhanging branches, boundary trees, falling trees, street trees and that statute. It describes how the rules generally work and is not legal advice, so talk with a Pennsylvania attorney about your situation.
Can You Trim a Neighbor's Branches That Hang Over Your Yard?
Yes, up to the property line. The Municipal Deskbook explains that when limbs grow over onto another person's property, Pennsylvania courts treat it as a trespass, specifically a continuing trespass, and the affected landowner may trim the branches back to the line even if they are not damaging anything.
The same source says a landowner who incurs reasonable expenses trimming the branches may recover them from the trespasser. WeConservePA's guide to tree law, written by attorney Gilbert P. High Jr., describes this as a change in Pennsylvania law that allowed neighbors to both remove the limbs and collect the cost.
Three practical limits keep this from turning into a dispute:
Trim only what crosses the line. The right described in these sources stops at the property line.
Work from your side. Stepping onto the neighbor's property to cut is a different matter, so get their permission first.
Avoid cuts that could kill or destabilize the tree. Heavy one-sided cutting or cutting large roots near the trunk creates risk, and our post on who is responsible for a tree on a property line in PA covers where trimming ends and trunk work begins.
Who Owns a Tree Growing on the Property Line?
There is no simple answer. WeConservePA's guide lays out several possibilities for a trunk that straddles the line and concludes that, because either owner would have to trespass to remove the whole tree, the question is one a court would have to decide.
In practice, that means removing a true boundary tree without the neighbor's written agreement is a risk. A survey settles where the line actually runs, and a written agreement on removal and cost sharing heads off most disputes.
Who Pays When a Tree Falls on the Neighbor's Property?
It depends on what the owner knew. WeConservePA's guide describes the standard Pennsylvania courts have applied in cases involving roads: to hold a landowner liable for a falling tree, the injured party had to show the tree was dangerous and that the owner was or should have been aware of its deteriorated condition.
Insurers apply similar thinking. Progressive notes that unless you can prove negligence, you may be responsible for your own repairs, and that negligence may be established if the tree was clearly dead or rotting or a specialist had recommended removal. A healthy tree that comes down in a severe storm is usually treated differently from a dead one the owner ignored.
That is why documenting a hazard matters. If a neighbor's tree looks dead or dangerous, a written notice creates a record of what they were told. Our posts on when a neighbor's tree falls on your property in PA and your rights if a neighbor's tree is dead walk through those steps. Your insurer and an attorney are the right people to confirm how this applies to a specific loss.
What Happens If Someone Cuts Down Your Trees?
Pennsylvania has a specific statute for this, 42 Pa.C.S. § 8311, on damages for the conversion of timber. It says a person who cuts or removes another person's timber without consent is liable, in place of other damages, for:
The usual costs of establishing the value of the timber
The costs of complying with erosion and sedimentation control rules in 25 Pa. Code Chapter 102
The cost of any surveys obtained for the case
Three times the market value if the cutting was deliberate, two times if negligent, or market value if the person had a reasonable basis to believe the land was theirs
Two details matter. The statute defines timber as standing trees, logs or parts of trees that are commonly merchandized as wood products, and it defines market value as the value of the standing timber at local prices for that species and quality. How that applies to an ornamental yard tree rather than a woodlot is a question for an attorney. The damages can also be reduced by any criminal restitution ordered under 18 Pa.C.S. § 1107.
The lesson runs both ways. Before any tree work near a line, confirm where the line is. Confirming the line first is the simplest way to stay clear of this statute.
Who Controls Trees Between the Sidewalk and the Street?
Often, your municipality. Penn State Extension explains that municipal tree commissions, sometimes called shade tree commissions, draw their powers from the borough and township codes, and where one exists, no tree can be planted or removed within the public right-of-way except under the commission's authority. Commissions can approve permits for removal, planting, or pruning in the right-of-way and review hazardous trees.
Rules vary from town to town, so call your borough or township before touching a street tree. Our post on what permits are required for tree removal in PA covers local permit rules in more detail.
Do You Need to Call 811 Before Tree Work?
If the job involves digging, yes. The Pennsylvania Public Utility Commission says homeowners and contractors must call 811 at least three business days before starting any digging or excavation project. That includes planting a replacement tree or trenching near roots.
FAQ
Can my neighbor make me cut down my tree?
The sources above do not describe a right to force removal. They describe a neighbor's right to trim overhanging branches to the line, and an owner's exposure to liability if a tree they knew or should have known was dangerous falls. An attorney can advise on a specific dispute.
Can I charge my neighbor for trimming their overhanging branches?
The Municipal Deskbook says a landowner may recover reasonable trimming expenses from the neighbor, citing Pennsylvania case law.
What are treble damages for cutting trees in Pennsylvania?
Under 42 Pa.C.S. § 8311, deliberate cutting of another person's timber carries damages of three times market value, plus valuation, erosion control, and survey costs.
Who is responsible if a healthy tree falls in a storm?
Liability usually depends on whether the owner knew or should have known the tree was dangerous. Progressive notes that without proof of negligence, you may be responsible for your own repairs through your own coverage. Confirm with your insurer.
Can I cut roots from my neighbor's tree?
The sources above describe the trimming right in terms of overhanging limbs. Cutting large roots near a trunk can destabilize a tree, which could create liability if it later falls, so get advice before cutting major roots.
Do I need a permit to trim a street tree?
Where a municipal tree commission exists, Penn State Extension says work in the public right-of-way happens under its authority. Check with your borough or township first.
Tree Trimming and Removal From Brinko Tree Service
Brinko Tree Service, based at 1010 Sunset Blvd in Harrison City, has nearly 20 years of experience with trees across Westmoreland and Allegheny Counties. When a neighbor's branches need to come back to the line or a hazardous tree needs to come down, the team provides pruning and trimming and tree removal, along with stump grinding and cleanup. Brinko is fully licensed and insured, follows OSHA and ANSI safety regulations with an OSHA safety site supervisor on every job site, and offers free estimates.
Visit Brinko Tree Service or call 412-373-7450 today. Contact us for more information.
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