Tree disputes between neighbours are far more common than most people expect. Research suggests over a million householders across the UK experience damage or an accident caused by a neighbour’s trees or hedges each year. In London, where mature trees grow close to Victorian terraces, shared boundaries, and clay soils, these disputes regularly escalate into legal action, insurance claims, and serious structural damage. Knowing where responsibility sits from the outset can save months of delay and thousands of pounds.
Who Owns the Tree?
The starting point in any tree dispute is ownership. Under UK law, a tree belongs to whoever owns the land on which its trunk is rooted. This applies even when branches extend well beyond the property boundary or roots spread into a neighbouring garden or under a neighbouring building. Ownership doesn’t shift because the tree has grown into someone else’s space – it stays with the original landowner, along with the legal responsibility that comes with it.
Where a trunk straddles a shared boundary, the tree is generally considered jointly owned. This is a common source of confusion, since it means neither party can carry out significant work to the tree without the other’s agreement.
The Duty of Care
As established in Donoghue v Stevenson [1932] and reinforced through subsequent case law including Rylands v Fletcher [1868], a tree owner has a duty of care to avoid acts or omissions that could reasonably be foreseen to cause harm to a neighbouring property or its occupants. In practical terms, this means a homeowner can be held liable for damage caused by their tree if they knew, or ought reasonably to have known, that a risk existed and did nothing about it.
Liability isn’t automatic – courts consider whether the tree owner acted reasonably given what they knew. But once a risk has been flagged, whether by a neighbour, a surveyor, or an arboricultural report, inaction becomes much harder to defend.
Overhanging Branches: What You Can Do Without Permission
If your neighbour’s tree is overhanging your property, you have a common law right to cut back branches to the boundary line. This is known as the right to abate a nuisance, and it doesn’t require your neighbour’s permission.
However, it comes with conditions:
- You can only cut back to the boundary, not beyond it
- You cannot trespass onto your neighbour’s land to carry out the work
- Anything you cut, including branches, leaves, and fruit, legally remains your neighbour’s property, and you should offer it back to them
- If the tree is protected by a Tree Preservation Order or sits within a conservation area, you must check what works are permitted before touching it, even if branches have crossed onto your land
Minor inconveniences – fallen leaves, seed pods, shading – are generally not actionable. The law expects a degree of tolerance between neighbours for these natural occurrences. Where a genuine nuisance exists, meaning real damage or a significant interference with the use of your property, you have stronger grounds for action.
Before You Cut: Check for Protection
This is a step many homeowners skip, and it can be costly. Cutting back a branch from a TPO-protected tree without the correct consent, even when it’s overhanging your property, can result in prosecution and an unlimited fine. Our guide to Tree Preservation Orders for London property owners explains how to check protection status before carrying out any work.
Root Encroachment: A More Complex Problem
Root disputes are typically more serious than branch disputes, because the damage involved – to foundations, drainage systems, driveways, and retaining walls – can run to tens of thousands of pounds. You have the same common law right to cut back encroaching roots to the boundary line, but exercising this right carries its own risks: severing structural roots can destabilise a tree and cause it to fail, creating a new liability for you rather than resolving the original dispute.
The more important question is usually not whether you can cut the roots, but who is responsible for the damage they have already caused. This is where professional arboricultural evidence becomes essential.
Proving Root Damage
To establish that a neighbour’s tree is responsible for damage to your property, you typically need two types of professional evidence working together: a structural or drainage survey confirming the nature and extent of the damage, and an arboricultural report identifying the tree, its species and root spread, its likely contribution to the problem, and any previous warnings or correspondence that may establish when the tree owner knew or should have known about the risk.
Clay soils, which cover much of London, are particularly vulnerable to moisture changes caused by nearby tree roots. If your property is on London clay and a mature tree is growing close to the foundations or drains, root encroachment into damaged structures is a plausible cause that an arboricultural report can either confirm or rule out. Our guide on how tree surveys help prevent property subsidence sets out how root influence is assessed in detail.
When to Get an Independent Report
An independent arboricultural report is worth commissioning in any of the following situations:
- A neighbour’s tree has caused visible damage to your property and you need evidence to support a compensation claim or insurance submission
- You’ve raised a concern with your neighbour and they’ve disputed responsibility or refused to act
- You’ve identified a tree you believe poses a risk and need professional documentation to support a formal request for works
- Your insurer or their loss adjuster has requested arboricultural evidence as part of a subsidence or storm damage claim
- A dispute has escalated to the point where legal action is being considered
An independent report carries more weight than informal complaints or photographs, because it establishes the facts objectively and can be submitted to insurers, solicitors, or a court. It also protects you if a dispute later escalates – documentation prepared promptly after damage occurs is significantly more useful than evidence gathered months later.
What If a Council Tree Is Involved?
If the tree responsible for damage is on council-owned land, the same principles of duty of care apply, but the process for claiming against a local authority is different. Councils have a legal obligation to manage their trees safely, and government guidance on trees and planning is clear that public bodies must consider both amenity value and the safety of neighbouring properties. An arboricultural report is still a key piece of evidence in these cases, providing independent confirmation of root influence or structural risk that the council’s own assessments may not have captured.
Getting the Evidence Right
Tree disputes between neighbours rarely resolve quickly without clear, professional documentation. Whether you’re dealing with overhanging branches, root damage to your drains, or a tree you believe poses an imminent safety risk, an independent arboricultural report gives you a factual, evidenced position to bring to your neighbour, your insurer, or a solicitor.
If you need an independent tree report to support a neighbour dispute in London, our team can carry out a site visit and prepare clear written evidence suitable for insurance submissions and legal correspondence. Find out more about our tree safety report service or our full tree survey and reporting service, or get in touch to discuss your situation.