Boundary trees: overhanging branches and ownership

A tree belongs to the person who owns the land on which its trunk stands at ground level, regardless of where the branches or roots reach. If the trunk straddles a boundary, the tree is owned jointly and neither owner can act alone. Where branches overhang your land, you have a common law right to cut them back to the boundary line, but that right stops dead if the tree is protected by a Tree Preservation Order or stands in a conservation area.

Most boundary tree arguments are settled by establishing those two facts. Whose trunk, and is it protected.

Establishing who owns the tree

Start with the title plan from HM Land Registry for both properties and the position of the trunk on the ground. The red line on a title plan is indicative rather than precise, so on a tight boundary it will not always answer the question by itself.

Where the plan is ambiguous, look at the physical evidence: the line of the fence, the position of any wall footing, the pattern of hedges and the age of the tree relative to the boundary features. A tree planted before a fence was moved may sit on the other side of the legal line from where it appears.

If the trunk straddles the line, the tree is owned in common. Neither owner may fell it or lop it without the other's agreement, and doing so risks a claim in damages. That is an uncomfortable position and it is worth resolving in writing rather than by chainsaw.

A tenant is usually not the owner for these purposes. Check the lease, because responsibility for trees and hedges is frequently allocated in the repairing covenants.

The common law right to abate and its limits

The right of abatement lets you cut back the parts of a tree that encroach onto your land, to the boundary and no further. It is a self-help remedy and it needs no permission from the owner.

Four limits apply and they matter more than the right itself.

You may not enter the neighbour's land to do the work without permission, which in practice means the cutting has to be done from your side or by agreement. You may not cut beyond the boundary plane, including reaching over to take a branch off at the stem. You must not carry out work that damages the health of the tree so severely that it dies or becomes unstable, because that exposes you to a claim. And you should take proper advice before cutting anything substantial, since removing a large limb can destabilise a mature tree.

The right also does not oblige the owner to do anything. If overhanging branches drop leaves, blossom, fruit or shade onto your garden, that is not in itself a nuisance the law will remedy, and there is no right to light from a tree or to a view past one.

A tree in poor condition is a different matter. Where a tree is dangerous, the owner has a duty of care, and a written notice to them recording the concern is the sensible first step.

What to do with the cuttings

Branches you cut off remain the property of the tree's owner, and so does any fruit on them. The correct course is to offer them back.

In practice that means telling the neighbour before you cut, asking whether they want the material returned, and if they do, placing it on their land at an agreed point rather than throwing it over the fence. Tipping arisings back without asking can amount to fly-tipping or trespass.

If they do not want the material, dispose of it yourself. Most people take this route and nobody minds, but the conversation is what protects you if relations sour later.

Keep the exchange in writing. A short email confirming what you intend to cut, when, and what will happen to the arisings costs nothing and prevents most disputes from escalating.

Where a preservation order removes the right

A Tree Preservation Order made under the Town and Country Planning Act 1990 and the Town and Country Planning (Tree Preservation) (England) Regulations 2012 makes it an offence to cut down, top, lop, uproot or wilfully damage a protected tree without the council's written consent. That applies to overhanging branches on your side just as much as to the trunk.

Trees in a conservation area that are not already covered by an order are protected by a separate mechanism. Under section 211 of the 1990 Act you must give the council six weeks' notice of proposed works, during which it can make an order. Working without that notice is an offence.

There is a limited exemption for dead trees and for work urgently necessary to remove an immediate risk of serious harm, with a notice requirement attached. It is narrow, and relying on it without arboricultural evidence is a poor idea. Photograph and record the condition before any emergency work, and notify the council as soon as possible.

The penalties are real. Prosecution for unauthorised works to a protected tree can result in a substantial fine, and the council can also require replacement planting.

Before cutting anything on a boundary, search the council's mapping for orders and conservation area boundaries. Where a scheme involves trees more widely, a survey to BS 5837:2012 is the document that records condition, root protection areas and constraints, and the tree survey page explains what that assessment covers.

Roots, damage and the civil claim

Roots are treated the same way as branches for the right of abatement, so you may cut those that encroach. The same limits apply, and the risk of destabilising the tree is greater, so take arboricultural advice before severing anything substantial.

Where roots cause actual damage, such as subsidence to a building on shrinkable clay, blocked drains or lifted paving, the claim is in nuisance against the tree's owner. Establishing it needs evidence: crack monitoring, a soil investigation showing desiccation, root identification, and a report linking the damage to that species and that tree. Insurers pursue these claims routinely and they are expensive to run.

Notice matters in nuisance. An owner who has been told about a problem and does nothing is in a worse position than one who never knew. So a written notice with photographs is the first practical step, before solicitors.

Note: cutting roots to abate a nuisance can itself cause the tree to fail, which turns you from claimant into defendant. Get the sequence right.

Resolving it without a dispute that reaches the council

Councils have no general power to make a neighbour cut a tree back. The one exception is the high hedges regime under Part 8 of the Anti-social Behaviour Act 2003, which applies to a line of two or more mostly evergreen trees or shrubs over two metres high that acts as a barrier to light or access. That complaint route requires evidence you have tried to settle it first, and the council charges a fee.

For everything else the practical order is: establish ownership, check for protection, write to the neighbour setting out what you propose and why, get arboricultural advice if the work is more than light pruning, and agree the treatment of arisings.

Where the tree sits on a site you are developing, deal with it at design stage instead. A landscape strategy that retains a boundary tree with an adequate root protection area avoids the whole argument, and it reads far better to a case officer than a proposal that removes a mature tree for convenience.

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This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it.