Neighbour's Tree Overhanging My Property: NSW Law Explained

Under NSW law, you have the right to cut back branches and roots from a neighbour's tree that cross your property boundary -- this is known as the right of abatement. However, you can only cut back to the boundary line, the tree must not be protected under a Tree Preservation Order, and you must not cause the tree to die or become unstable. If damage has already occurred, you may be able to seek compensation through the NSW Land and Environment Court under the Trees (Disputes Between Neighbours) Act 2006.

Overhanging trees are one of the most common sources of neighbour disputes across the Central Coast and Sydney's North Shore. I get calls about this issue every week, and the situation is rarely as straightforward as people think. Here is a thorough breakdown of your rights and responsibilities.

Your Right of Abatement

The common law right of abatement allows you to trim branches and roots that encroach onto your property. But there are important limitations:

- You can only cut to the boundary line -- not beyond it, and not in a way that destabilises the tree.
- You cannot enter your neighbour's property to do the work without their permission.
- You are responsible for the cost of cutting back encroaching branches on your side, unless you can prove the tree has caused actual damage to your property.
- You should return the cut branches to your neighbour if they request them. The cuttings technically belong to the tree owner, as do any fruit.
- You must not kill the tree -- if your cutting causes the tree to die, you could be liable.

Important: Check for Tree Preservation Orders First

Before cutting anything, check whether the tree is subject to a Tree Preservation Order. If it is, you may need council approval even to prune branches on your side of the boundary. This catches a lot of people off guard, particularly in Ku-ring-gai, Hornsby, and Central Coast council areas where tree protections are strict.

The Trees (Disputes Between Neighbours) Act 2006

If the common law right of abatement is not sufficient -- for instance, if the tree is causing property damage, blocking light significantly, or dropping debris that creates ongoing maintenance issues -- you may be able to apply to the NSW Land and Environment Court under the Trees Act.

The Court can order:

- Removal or pruning of the tree by the tree owner.
- Payment of compensation for damage caused by the tree, including to structures, pipes, driveways, and gutters.
- Preventative orders to stop future damage.

To apply, you need to demonstrate that the tree has caused, is causing, or is likely to cause damage to your property. The Court will also consider the tree's amenity value, its contribution to the local environment, and whether the damage could reasonably be prevented by other means.

What Counts as "Damage"?

The Court has interpreted damage broadly in past cases:

- Structural cracking from root intrusion
- Blocked or damaged drains and sewer lines
- Lifting of paths, driveways, and retaining walls
- Excessive leaf drop blocking gutters and causing water damage
- Branches that pose a risk of falling onto structures

Note that loss of a view, reduced sunlight, and minor leaf drop are generally not considered sufficient grounds on their own, though the Court considers each case individually.

Steps to Resolve an Overhanging Tree Dispute

I always recommend the following approach, working from least to most escalated:

Step 1: Talk to Your Neighbour

This sounds obvious, but it resolves the majority of cases. Most neighbours are not aware that their tree is causing problems. A friendly conversation often leads to them arranging tree pruning at their own expense. Approach it as a shared problem rather than a complaint.

Step 2: Put It in Writing

If a conversation does not resolve the issue, write a polite letter or email to your neighbour explaining the problem. Be specific about which tree, what the issue is, and what outcome you are seeking. Keep a copy -- this becomes important evidence if the matter escalates.

Step 3: Contact Your Council

Most councils on the Central Coast, Lake Macquarie, and across Sydney have a tree management or compliance team. While councils generally do not get involved in private tree disputes, they can:

- Advise on whether the tree is protected under a TPO.
- Inspect trees that may be hazardous.
- Issue orders for dangerous trees on private land in some circumstances.
- Direct you to mediation services.

Step 4: Community Mediation

Before going to court, consider free mediation through the Community Justice Centre. This is a government-funded service that helps neighbours resolve disputes without legal costs. The Land and Environment Court actually prefers that you attempt mediation before filing an application.

Step 5: Land and Environment Court Application

If all else fails, you can apply to the Court under the Trees Act. The application fee is relatively modest, and you do not necessarily need a lawyer, though professional advice is recommended. An arborist report from a qualified arborist is usually essential evidence for Court proceedings.

Who Pays for What?

This is the question I get asked most often:

- Pruning on your side of the boundary -- Generally your cost, unless you can prove damage.
- Pruning on the tree owner's side -- The tree owner's responsibility, but they cannot be forced to act unless the tree is dangerous or you obtain a Court order.
- Damage to your property -- The tree owner may be liable if they knew about the risk and failed to act. This is where written correspondence becomes critical evidence.
- Fallen branches during a storm -- Usually covered by your own home insurance. See our guide on tree removal insurance and what homeowners need to know.

When to Call an Arborist

Getting a professional assessment is valuable at almost any stage of a tree dispute. A qualified arborist can:

- Identify the tree species and assess its health and structural integrity.
- Determine whether pruning can solve the problem without harming the tree.
- Provide a written report that serves as evidence for council or Court proceedings.
- Carry out the pruning work in compliance with AS 4373 (Pruning of Amenity Trees).
- Advise on whether council approval is needed before any work proceeds.

On the Central Coast and North Shore, I regularly provide assessments for exactly these situations. Whether you need tree removal in Wahroonga due to encroachment damage or careful boundary pruning in Gosford, having an arborist involved early often prevents disputes from escalating.

Common Myths About Overhanging Trees

- "If the trunk is on their side, it is entirely their problem." Not true. You share responsibility for managing the encroachment on your side.
- "I can cut any branch that crosses my boundary." Only if the tree is not protected. A TPO can restrict your right of abatement.
- "Council will make them remove it." Council rarely intervenes in private disputes unless there is a public safety issue.
- "I can poison the roots on my side." This could kill the tree and leave you liable for its value -- which can be assessed at tens of thousands of dollars for a mature specimen.

Need Help With an Overhanging Tree Situation?

If you are dealing with a neighbour's tree that is encroaching on your property, I can assess the tree, advise on your options, and carry out any pruning work that is needed -- all in compliance with council regulations and Australian Standards.

Call Daymian on 0432 687 647 or contact us online to arrange an inspection.