Neighbourhood Nuisance: When Your Trees Force Your Neighbour to Resort to Legal Action

Imagine you own a house in Mont-de-Marsan, in the residential neighbourhood of Bourg-Neuf. You planted some beautiful trees along your fence a few years ago, about 2 metres from the boundary with your neighbour's land. They pleasantly shade your terrace, but their roots are gradually spreading underground. One morning, your neighbour knocks on your door, looking annoyed: the roots have damaged his concrete slab, his plantings are withering, and the permanent shade makes his courtyard unusable. What to do? Can he demand that you remove your trees?

This situation, much more common than one might think in our Landes region where properties are often wooded, was decisively clarified by the Cour de cassation in a judgment of 4 January 1990. This decision, which remains a reference today, answers a crucial question: how far can tolerance between neighbours go regarding inconveniences caused by vegetation?

The stakes are far from trivial. In a department like the Landes, where neighbourhood disputes related to trees represent nearly 15% of real estate litigation according to my observations in practice, understanding this case law can save you from lengthy and costly proceedings. But what does this decision change concretely for you, as an owner, tenant, or real estate professional?

The facts: a story that happens every day

Let's go back to the origins of this case, which I could almost summarise as a situation I've encountered several times in my practice in Mont-de-Marsan. Mr and Mrs Z..., owners of a house with a garden, see their daily life disrupted by their neighbours' trees, Mr and Mrs X... These trees, planted only 2 metres 20 from the boundary line (the official limit between the two plots), are not mere decorative shrubs. They reach nearly 5 metres in height, creating permanent shade over a significant part of the Z... couple's garden.

But that's not all. The roots of these trees, invisible on the surface, work underground. They gradually invade the Z... couple's land, damaging their own plantings and even threatening the foundations of their garden shed. The Z... couple first attempt amicable dialogue with their neighbours, as I always recommend initially. Unfortunately, discussions lead nowhere. The X... couple believe their trees are on their property and they can dispose of them freely.

Faced with this impasse, the Z... couple decide to resort to legal action. They sue their neighbours before the court, demanding not only damages for the harm suffered but, above all, cessation of the nuisance by removal of the trees. The court of first instance rules in their favour, effectively ordering the removal. The X... couple, dissatisfied with this decision, appeal. The court of appeal confirms the judgment, considering that the inconveniences suffered by the Z... couple exceed the normal inconveniences of neighbourhood. The X... couple still do not admit defeat and appeal to the Cour de cassation, leading to the decision we analyse today.

The court's reasoning — broken down

The Cour de cassation, in its judgment of 4 January 1990, will carefully examine the reasoning of the appeal judges. The legal basis invoked by the Z... couple is the notion of abnormal neighbourhood nuisance (harm exceeding the ordinary inconveniences of life in society). This notion, although not explicitly codified at the time, derives from Article 1240 of the Civil Code (formerly Article 1382, which obliges one to repair damage caused by one's fault).

The Cour de cassation magistrates will validate the approach of the lower court judges. Their reasoning rests on several key points. First, they recognise that the appeal judges have sovereign power to assess the facts. In other words, it is the judges who have seen the premises, heard the parties, who are best placed to determine whether the nuisance exceeds or not the normal level of tolerance between neighbours. In this case, the appeal judges held that the permanent shade and root invasion indeed constituted a nuisance exceeding normal inconveniences.

Next, and this is perhaps the most important point for owners, the Cour de cassation validates the fact that the judges did not have to seek whether there were other less radical solutions than removal. As soon as removal appears as the only means to definitively stop the disorders, the judges can order it directly. This point is crucial: it means that in the face of an established abnormal nuisance, the courts can impose the most radical solution if it is the only effective one.

Finally, the Court rejects the argument of the X... couple who invoked a violation of their property rights. It thus recalls a fundamental principle: the right of ownership is not absolute. It stops where the abnormal nuisance caused to others begins. Your freedom to plant trees on your land therefore finds its limits in respecting the neighbourhood.

What this changes for you — concretely

If you are a landlord (you let your property), this decision directly concerns you. Imagine you rent out a house in Dax, in the Sablar neighbourhood, and your tenant complains about the neighbour's trees. You cannot remain passive. undefined, I have handled cases where tenants obtained a rent reduction for neighbourhood nuisance, and it is you, the owner, who will then have to seek recourse against the responsible neighbour. If you are in this situation, you must first precisely document the disorders (photos, bailiff's reports, repair estimates) before initiating action.

For the owner-occupier, the lesson is clear: before planting a tree near the boundary line, think twice. A tree planted at 2 metres 20, as in the commented case, can perfectly justify its removal a few years later if it causes disorders. The costs can be significant: between €500 and €2,000 for the removal itself, to which are often added damages that can reach several thousand euros to repair the harm suffered by the neighbour.

For the purchaser, this case law should influence your due diligence before purchase. When visiting a property in Mont-de-Marsan, look carefully at the vegetation near the boundaries. Mature trees planted too close to the fence can become a source of costly dispute. Do not hesitate to make it a negotiation point or to ask for guarantees from the seller.

However, be careful: this decision does not mean that every tree planted less than 2 metres from the boundary must be removed. It all depends on the concrete nuisance it causes. But it significantly strengthens the position of the neighbour suffering proven harm.

Four tips to avoid this type of dispute

• Respect legal distances from planting: Even if the law does not impose an absolute minimum distance for trees (unlike for buildings), anticipate. For trees exceeding 2 metres in height, a distance of at least 2 metres from the boundary is recommended. For larger specimens, increase this distance.
• Choose suitable species: Prefer trees with taproots (which go straight down) rather than spreading roots (which extend horizontally). In the Landes, a pedunculate oak will often be more problematic than a well-placed maritime pine.
• Document all exchanges with your neighbour: As soon as a problem arises, communicate in writing (registered letter with acknowledgment of receipt, saved emails). In case of proceedings, this evidence will be valuable to establish good faith or bad will.
• Consult a professional before acting: An arborist or a surveyor-expert can objectively assess the risks and propose alternative solutions to removal (reasoned pruning, root barriers).

Deep dive: related case law and developments

This 1990 decision fits into consistent case law of French courts. Already in 1983, the Cour de cassation had validated the removal of trees causing a nuisance through their cast shadow (Cass. civ. 3e, 16 March 1983). More recently, in 2015, the Court confirmed this approach by ordering the removal of poplars whose roots were damaging a swimming pool (Cass. civ. 3e, 8 July 2015).

What few people know is that the trend of the courts is even to become more demanding over time. Whereas in the past, neighbourhood inconveniences were more tolerated, today, environmental sensitivity and concern for living standards have strengthened protection against nuisances. Judges are thus more inclined to find the abnormal character of a nuisance as soon as it significantly affects the peaceful enjoyment of a property.

For the future, this case law remains more relevant than ever. With climate change and more frequent droughts in the Landes, problems related to roots seeking water could even intensify. Prevention therefore becomes even more crucial.

Key points to remember

FAQ — Your questions, our answers:

1. At what minimum distance should I plant my trees?
There is no absolute legal distance, but case law considers that a tree planted less than 2 metres from the boundary and causing a nuisance can justify its removal. Plan for at least this distance, and more for large specimens.

2. Can my neighbour demand the removal of my trees without proof of damage?
No. He must prove the existence of an abnormal nuisance (material damage, abnormal deprivation of light, etc.). Mere aesthetic inconvenience or autumn leaf fall is generally not sufficient.

3. What to do if my neighbour refuses to remove his trees that are damaging my property?
Document the damage (photos, bailiff's report), attempt mediation, then if necessary, apply to the tribunal judiciaire (judicial court). Proceedings generally last 12 to 18 months.

4. Is removal always the only solution?
No. In some cases, reasoned pruning or installation of root barriers may suffice. But if the nuisance persists, judges can order removal as a definitive solution.

5. Who pays for removal and repair costs?
The owner of the trees, unless the nuisance was unforeseeable despite all precautions. Procedural costs are generally borne by the losing party.

Do you find yourself in a similar situation? A first 30-minute consultation with Maître Zakine (€45) can save you months of proceedings — and often much more. Book an appointment →