Abnormal Neighbourhood Disturbances: Pig Farmer Ordered to Pay for Odour Nuisance

Imagine: you have just bought a lovely house in Bonneville, with a garden and an unobstructed view of the mountains. A few months later, your farmer neighbour decides to expand his pig farm. The smells become unbearable, you can no longer open your windows. What can you do? This is exactly the question a homeowner asked himself in the 1990s, and which the French Supreme Court decided. This decision, handed down on 7 November 1990, laid down a simple but powerful principle: a neighbour who suffers an increase in nuisance can obtain compensation, even if the activity existed before his arrival. But be careful, it all depends on the conditions under which the activity is carried out.

When you buy a house in the countryside, you expect a certain peace, but you also have to tolerate the surrounding agricultural activities. However, there is a limit: abnormal neighbourhood disturbance. This concept, derived from case law, allows you to claim damages or even an order to stop the nuisance. The judgment of 7 November 1990 is a classic example: it shows how judges assess the abnormality by comparing the situation before and after the claimant's arrival.

In this article, we will break down this decision and see what it changes for you. Whether you are an owner, tenant or farmer, you will find keys to understanding your rights and taking concrete action. Ready to find out more?

The Facts: A Story That Happens Every Day

In 1977, Mr Y. bought a house in a rural commune, not far from a Groupement Agricole d'Exploitation en Commun (GAEC) of Rivailles, which ran a pig farm. At the time, it was a small farm: a few animals, no significant nuisance. Mr Y. settled in, enjoyed his garden, everything was fine.

But a few years later, the GAEC decided to expand. It obtained planning permission for a modern pigsty, capable of housing a much larger number of pigs. The work was carried out, and very quickly the smells became pestilential. Mr Y. could no longer open his windows without being inconvenienced, his outdoor meals were ruined, the smell even permeated his clothes. He decided to sue.

The Tribunal de Grande Instance of Bonneville was seised. Mr Y. claimed compensation for his loss: disturbance of enjoyment, loss of value of his property, medical expenses for persistent headaches. The GAEC, for its part, argued that the farm existed before Mr Y.'s arrival, and that he could not complain about a pre-existing activity. "You knew when you bought that there were pigs next door," they said. But the court found in favour of Mr Y.: it ordered the GAEC to pay him damages.

The GAEC appealed. The Court of Appeal of Chambéry upheld the judgment. The case went up to the French Supreme Court, which dismissed the GAEC's appeal in a judgment of 7 November 1990. For the supreme judges, the Court of Appeal had properly justified its decision: it had noted that the initial farm caused no nuisance, and that the expansion had transformed the operating conditions. The activity was no longer the same, and the nuisances had become abnormal.

The Reasoning of the Court — Explained

To understand this decision, you must first know the legal basis: Article 1240 of the Civil Code (formerly 1382), which provides that "any act of man, which causes damage to another, obliges the person by whose fault it occurred to make reparation". But be careful, in neighbourhood matters, we do not speak of fault: we speak of abnormal disturbance. This is called the theory of abnormal neighbourhood disturbances. There is no need to prove an intention to harm or negligence: it is enough to show that the disturbance exceeds the normal inconveniences of neighbourhood.

In this case, the Court of Appeal proceeded in two stages. First, it noted that before Mr Y. bought the house, the farm was modest and generated no nuisance. Then, it verified that after obtaining planning permission, the farm had developed considerably, to the point of making the smells unbearable. In doing so, it established that the activity was not "carried on under the same conditions". This point is crucial: if the operation had remained identical, Mr Y. would have had to tolerate the normal inconveniences. But the aggravation created a new imbalance.

The French Supreme Court validates this reasoning. It recalls that the trial judge has sovereign discretion to assess the abnormality of the disturbance. In other words, it is for the first instance and appeal judges to decide, on a case-by-case basis, whether the disturbance is excessive. Here, they considered that going from a small farm to an industrial pigsty justified compensation. This is not a reversal of case law, but a classic application of the theory. However, it clarifies a point: the pre-existence of the activity is not an absolute shield. What matters is the evolution of the nuisances.

The GAEC put forward an argument: "The farm existed before, so the owner should just move or put up with it". The judges dismissed this argument. Why? Because Mr Y. did not buy with full knowledge of the current nuisances. He bought a house with a small peaceful farm, and ended up with an intensive pigsty. That is the difference between a normal inconvenience (occasional smells) and an abnormal disturbance (constant and unbearable smells).

What This Changes for You — Practically

This decision is a weapon for all those who suffer an increase in nuisances after their installation. If you own a house in La Roche-sur-Foron, for example, and your farmer neighbour doubles his poultry production, you can take action. But be careful: you must prove that the nuisances have increased significantly. A simple change in crop rotation will not suffice.

For tenants, the same logic applies. You rent a flat in Bonneville, and the owner of the adjacent land installs a pigsty? You can ask for a rent reduction or damages, but it is up to the owner of the flat (the landlord) to take action against the neighbour. In practice, if you are a tenant, report the nuisances to your landlord, who must then take action against the person causing the disturbance.

For potential buyers, this is a warning. Before buying a house near a farm, find out about expansion plans. Check the local urban plan (PLU) and ask the seller if any planning permissions have been filed. A notary can advise you, but cannot anticipate everything. Imagine: you buy a house for €250,000, and six months later, the smell of slurry prevents you from reselling it at the same price. The loss can be 10 to 30% of the value, i.e. €25,000 to €75,000. Compensation can cover this loss, but you need to act quickly.

Finally, for farmers, this decision is a reminder: the expansion of an existing activity can be challenged even if the activity was already there. Before investing in an extension, it is prudent to carry out an impact study on the neighbourhood and, if possible, negotiate agreements with neighbours. Refusal to compensate can be costly: in this case, the GAEC had to pay damages, not to mention legal fees and lost time.

Four Tips to Avoid This Type of Dispute

• Before buying, do a neighbourhood survey: ask the neighbours, check the land registry and the PLU, and find out if there are any agricultural expansion projects. A simple call to the town hall can reveal pending permits.
• In case of nuisance, keep a logbook: note the dates, times, intensity of smells, take photos or videos, and have a bailiff record it if possible. This is the evidence that will make the difference in court.
• Do not wait to act: the limitation period is 5 years for neighbourhood disturbances (general law period). But the longer you wait, the harder it will be to prove that the disturbance is abnormal and continuous.
• Prefer mediation before going to court: a registered letter, a meeting with the neighbour or a justice conciliator can resolve the conflict without costs. If that fails, a specialised lawyer can bring an interim injunction action to quickly stop the nuisances.

Further Reading: Related Case Law and Developments

The theory of abnormal neighbourhood disturbances has been consistent since the 19th century. A landmark judgment, "Compagnie des chemins de fer de l'Est" (Cass. 3e civ., 8 February 1989), had already established the principle that no fault is required. The 1990 decision is in line with this. More recently, the French Supreme Court clarified that even an activity authorised by the administration (planning permission, classified installation) can constitute an abnormal disturbance (Cass. 3e civ., 4 May 2011, n°10-17.079).

The current trend is towards enhanced protection of neighbours. Judges do not hesitate to order the cessation of activity if the nuisances are serious, even for old installations. For example, a poultry farm of 30,000 birds was ordered to cease its activity in 2018 (CA Rennes, 12 June 2018). This means that for owners, the case law is favourable. For farmers, the risk is real: it is better to anticipate and dialogue.

What You Absolutely Must Remember

Practical FAQ

Q: My neighbour has a pig farm that existed before I arrived. Can I still take action?
R: Yes, if the farm has intensified after your installation. Pre-existence is not an obstacle if the conditions have changed.

Q: How can I prove that the smells are abnormal?
R: Through testimonies, a bailiff's report, emails, a log of nuisances. The more you document, the better.

Q: Can I obtain the closure of the farm?
R: Yes, if the disturbance is serious and continuous. But the courts prefer compensation first, unless the disturbance is unbearable.

Q: How long does a procedure take?
R: In interim proceedings, a few months. On the merits, 1 to 3 years. Mediation can be faster.

Q: What to do urgently if the smells are unbearable?
R: Apply to the interim relief judge for an expert assessment and interim measures (cessation of activity, installation of filters).

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 →