Liability Insurance and Neighbourhood Disturbance: What the Judgment of 10 February 1987 Reveals

Imagine: you own a watercress bed in Douarnenez, have been cultivating it for years, and suddenly the water runs out. The basins dry up, the plants turn yellow, your harvest is compromised. On the other side of the fence, a gravel pit pumps water to extract sand. Who is responsible? And above all, who pays? Every property owner asks this question when a neighbour causes damage. The answer lies in a judgment of the Court of Cassation of 10 February 1987, which settled a landmark dispute between a gravel pit operator and watercress growers. This decision, still relevant today, clarifies the role of civil liability insurance in respect of neighbourhood disturbances.

Under French law, abnormal neighbourhood disturbance entitles the victim to compensation without having to prove fault. It is sufficient that the damage exceeds the ordinary inconveniences of neighbourhood. But when insurance covers the consequences of 'accidents', how far does its cover extend? Can the insurer refuse to indemnify on the ground that the damage is due to the insured's fault? This is precisely what the Court of Cassation had to clarify in this case.

The judgment of 10 February 1987 lays down a strong principle: unless there is a formal and limited exclusion in the contract, the insurer must cover damage caused by the insured's fault, including neighbourhood disturbances. A decision that still sets precedent today, and which every property owner or real estate professional should know.

The Facts: a Story That Happens Every Day

Mr X, operator of a gravel pit in Quimper, has been digging and pumping water from his quarry for years. On the other side of the road, the company Les Gravières modernes operates watercress beds. Water, essential for watercress cultivation, comes from the water table. However, by digging ever deeper, Mr X pumps the water that feeds the neighbouring basins. Result: the watercress beds dry up, production drops by 30%, and the owners suffer significant economic loss. They sue the gravel pit operator for abnormal neighbourhood disturbance and join his insurer, the insurance company, as a third party.

The court of first instance rules in favour of the watercress growers: it orders the operator to compensate them. But the insurer refuses to pay, arguing that the damage is not an 'accident' within the meaning of the contract. For the insurer, the progressive drying up of the watercress beds is neither sudden, nor unforeseen, nor external to the damaged property. It relies on an exclusion clause. The Rennes Court of Appeal follows this reasoning and discharges the insurer, leaving the operator as the sole debtor. He appeals to the Court of Cassation.

The Court of Cassation quashes the appeal judgment. It recalls that Article L. 113-1 of the Insurance Code requires the insurer to guarantee damage caused by the insured's fault, unless formally and limitedly excluded. However, the insurance policy covered 'accidents', defined as sudden, unforeseen and external events. The Court of Appeal did not establish why the drying up did not meet these three criteria. It therefore violated the law. The case is remitted to another Court of Appeal.

The Reasoning of the Court — Dissected

The Court of Cassation relies on Article L. 113-1 of the Insurance Code, which provides that 'losses and damage caused by fortuitous event or caused by the fault of the insured shall be borne by the insurer, unless formally and limitedly excluded in the policy'. In other words, the insurer cannot refuse cover on the ground that the loss results from the client's fault, unless the contract excludes it very clearly and precisely.

In this case, the civil liability insurance policy covered the consequences of 'accidents'. The question was whether the progressive drying up of the watercress beds could be characterised as an accident. The Court of Appeal had answered no, without demonstrating that the phenomenon was neither sudden, nor unforeseen, nor external to the damaged property. The Court of Cassation criticises this lack of reasoning. It recalls that any damage, even caused by fault, is an accident within the meaning of the policy, provided it fulfils the three contractual conditions.

This reasoning confirms consistent case law: the insurer cannot rely on the insured's fault as a ground for exclusion, unless expressly provided. It must prove that the loss does not correspond to the contractual definition of accident. Here, the Court of Appeal did not do this work. The quashing is therefore logical.

The decision also clarifies the concept of neighbourhood disturbance. The trial judges must characterise the existence of a disturbance exceeding the normal inconveniences of neighbourhood. In this case, the drying up of a watercress bed by excessive pumping constitutes such a disturbance. The operator's liability is engaged, and his insurance must cover it.

What does this mean for you? If your neighbour causes damage to your property (infiltration, subsidence, loss of crop), you can take action directly against his insurer, even if the damage results from negligence. The insurer can only refuse cover if the contract clearly provides for it.

What This Changes for You — Concretely

This decision has direct implications for property owners, tenants and real estate professionals. Here is what you need to remember.

For the property owner victim of a neighbourhood disturbance: You can claim compensation from your neighbour and his insurer. If your neighbour has dug a swimming pool that causes infiltration in your home, or if his industrial activity pollutes your land, his civil liability insurance must indemnify you, unless contractually excluded. For example, in Quimper, a property owner whose basement subsides due to a neighbouring quarry can obtain up to €50,000 in damages, covered by insurance.

For the operator or entrepreneur: Your civil liability insurance covers damage caused to others, even if you are at fault. Do not let your insurer tell you otherwise. In case of dispute, it must prove that the loss is not an accident within the meaning of your contract. For example, if you are a tradesman and your works damage a party wall, your insurer must cover the repairs.

For the tenant: You are responsible for disturbances you cause to your neighbours. Your home insurance (tenant's liability) covers this damage. If you flood the apartment below, your insurer cannot refuse to pay on the grounds that it is a mistake. It must do so, unless there is a very precise exclusion clause.

In practice, limitation periods are 2 years for direct action against the insurer (Article L. 114-1 of the Insurance Code), and 5 years for civil liability action (Article 2224 of the Civil Code). Do not delay in acting.

Four Tips to Avoid This Type of Dispute

• Check your insurance contract: Read the exclusion clauses carefully. If your policy excludes progressive damage or damage caused by your fault, ask for an endorsement or change insurer. A formal and limited exclusion is valid, but it must be written in very conspicuous characters.
• Document any neighbourhood disturbance: As soon as you notice damage (crack, infiltration, excessive noise), take photos, call a bailiff, and keep invoices. The more evidence you have, the stronger your case.
• Report the loss to your insurer within 5 days: Most contracts require a prompt declaration. If late, the insurer may reduce the indemnity. Do not delay.
• Consult a lawyer before accepting a settlement offer: Insurers often offer amounts lower than what you can obtain. A lawyer specialising in property law can negotiate for you and, if necessary, initiate proceedings.

Further Analysis: Related Case Law and Developments

This decision is part of a consistent line of the Court of Cassation. Already in 1984 (Civ. 2e, 14 November 1984, No. 83-14.565), the Court had ruled that the insurer must guarantee damage caused by the insured's fault, unless expressly excluded. The 1987 judgment confirms and clarifies this solution.

More recently, the Court of Cassation extended this principle to neighbourhood disturbances. In a judgment of 4 July 2019 (Civ. 3e, No. 18-17.859), it recalled that liability for abnormal neighbourhood disturbance is a no-fault liability, which strengthens insurance cover. In other words, even if the neighbour has committed no fault, his insurance can be called upon.

The trend of the courts is therefore favourable to victims. Insurers are increasingly often ordered to indemnify, unless the contract contains a very clear exclusion. For the future, one can expect exclusion clauses to be strictly interpreted, to the benefit of the insured.

Summary and Next Steps

• Am I covered if my activity causes a neighbourhood disturbance? Yes, your civil liability insurance covers damage, even if you are at fault, unless formally and limitedly excluded in your contract.
• Can I take action directly against my neighbour's insurer? Yes, the victim of a neighbourhood disturbance can sue the responsible party's insurer directly (direct action).
• What is the time limit for reporting a loss to my insurer? Generally 5 working days. Check your contract. If in doubt, report it immediately.
• What if my insurer refuses to cover me? Contest by registered letter with acknowledgement of receipt, then refer to the insurance mediator. As a last resort, consult a lawyer to initiate legal proceedings.
• What amounts are at stake? It all depends on the loss. For a loss of crop as in the 1987 case, compensation can reach several tens of thousands of euros. For cracks in a house, expect €10,000 to €50,000.

Are you 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 →