Abnormal Neighbourhood Disturbance: When Loss of Sunlight is Tolerated by Law

Imagine yourself in Aix-en-Provence, settled for years in your first-floor apartment. Every morning, the sun filters through your windows, warming your living room. Then one day, a developer announces the construction of a five-storey building right opposite. Goodbye sunshine, hello permanent shade. You think to yourself: 'This is an abnormal neighbourhood disturbance, I will get compensation!' But the courts decided otherwise. This decision of the Court of Cassation of 21 October 2009 (No. 08-16.692) directly concerns you, whether you are a property owner, tenant or real estate professional. It sets a clear limit: your right to sunlight is not absolute.

In a context where urbanisation is intensifying, particularly in high-pressure areas such as the Var coast or the Aix-Marseille metropolis, this case law acts as a safeguard for developers and a setback for some neighbours. In short, if you buy a property in a subdivision or urbanised area, you must expect your environment to change. But what exactly does this change for you?

This decision recalls a fundamental principle: an abnormal neighbourhood disturbance (i.e., a nuisance exceeding ordinary inconveniences of community life) is not automatically constituted by loss of sunlight or view. Everything depends on the context. In this case, the claimant, owner of a first-floor apartment in Aix-en-Provence, was deprived of sunlight by the neighbouring construction. But the Court of Appeal, upheld by the Court of Cassation, ruled that this disturbance was normal because the building was in a highly urbanised area, surrounded by taller buildings, and the claimant had bought in a subdivision where she should have expected to lose already reduced sunlight.

The Facts: A Story That Happens Every Day

Mrs X, owner of a first-floor apartment in a building in Aix-en-Provence, enjoyed modest but appreciable sunlight. Her building was part of a subdivision (a set of plots subject to common regulations) regularly authorised. One day, a neighbouring developer undertook the construction of a five-storey building, significantly reducing the sunlight in Mrs X's apartment. Claiming an abnormal neighbourhood disturbance (an excessive nuisance compared to normal inconveniences of community life), she sued the developer and the owners' association.

The Regional Court of Aix-en-Provence dismissed Mrs X's claim, ruling that the loss of sunlight was not abnormal. Mrs X appealed. The Court of Appeal of Aix-en-Provence upheld the judgment, considering that Mrs X's building was located in a highly urbanised area, that the immediate environment already included taller buildings, and that the subdivision allowed constructions that could alter the landscape. In short, Mrs X could not expect to retain already precarious sunlight.

Mrs X then appealed to the Court of Cassation. She argued that the Court of Appeal had deprived its decision of a legal basis by not characterising how the disturbance exceeded normal neighbourhood inconveniences. But the Court of Cassation dismissed her appeal, validating the reasoning of the lower courts. It recalled that no one is guaranteed to keep their environment, a planning scheme (the document governing constructions in a municipality) can always call it into question. In other words, loss of sunlight, even significant, is not necessarily abnormal if it results from the normal evolution of urbanisation.

The Reasoning of the Court — Decoded

To understand this decision, you must first know the legal foundation: Article 1240 of the Civil Code (formerly 1382), which provides that 'any act of man whatsoever that causes damage to another obliges the person by whose fault it occurred to repair it'. In the neighbourhood context, case law has developed a theory known as 'abnormal neighbourhood disturbance': a neighbour may be ordered to compensate for damage caused to another neighbour if the disturbance exceeds normal inconveniences of social life.

Note however: it is not a fault that is required, but an excessive imbalance. Here, the Court of Appeal noted several elements to decide that the disturbance was not abnormal. First, Mrs X's building was located in an already highly urbanised area, with taller buildings nearby. Second, the subdivision in which she had bought offered no guarantee of permanent view or sunlight. Finally, the neighbouring construction complied with the planning scheme (the Local Urban Plan or the subdivision regulations).

What few people know is that the Court of Cassation added an important principle: 'no one is guaranteed to keep their environment which a planning scheme could always call into question'. In other words, if you buy a property in an area where urbanisation is likely to evolve (for example, in a developable zone), you cannot complain about the loss of an advantage (sunlight, view) resulting from that evolution, provided the planning rules are respected.

In this case, the claimant argued lack of legal basis: according to her, the Court of Appeal had not sufficiently reasoned its decision. But the high court held that the lower courts had sovereignly assessed the facts. This decision is neither an evolution nor a reversal: it confirms consistent case law according to which abnormal disturbance is assessed in concreto (according to local circumstances).

What This Changes for You — Concretely

If you are a property owner or tenant in Aix-en-Provence, La Ciotat or elsewhere, this decision has direct implications. For a landlord owning an apartment in an old building, beware: if a developer builds opposite, you may not necessarily obtain compensation for loss of sunlight, especially if the project complies with the PLU (Local Urban Plan). For example, if your building is in zone UA (dense urban zone) and the neighbouring planning permission is compliant, the disturbance will be considered normal.

For a tenant, the situation is different: you may possibly request a rent reduction if the loss of light makes the dwelling unfit for its purpose (for example, if the apartment becomes unhealthy). But beware: you must demonstrate a specific prejudice, which is rarely granted. A concrete example: in La Ciotat, a tenant on the ground floor of an old building saw his terrace plunged into shadow due to a luxury residence built in 2022. Despite his steps, the Court of Appeal of Aix-en-Provence rejected his claim, ruling that the loss of sunlight was normal in a sector undergoing urban renewal.

If you are a buyer, this decision invites vigilance: before buying a property, check the PLU (Local Urban Plan) and construction projects nearby. You can consult the town planning department of the town hall. If you are a co-owner, know that the syndic can act for abnormal disturbance if the prejudice is collective, but again, context prevails.

In case of litigation, delays are long: expect 12 to 18 months for a first-instance judgment, and 2 to 3 years on appeal. Lawyer fees can range from €1,500 to €5,000 depending on complexity. But mediation (about €500 to €1,000) can sometimes resolve the conflict more quickly.

Four Tips to Avoid This Type of Dispute

• Consult the PLU before buying: the Local Urban Plan tells you about developable zones, maximum heights, and siting rules. In Aix-en-Provence, the PLU is accessible online. If your view is exposed to a developable zone, prepare for change.
• Check easements and subdivision regulations: some subdivisions impose strict rules (height, distance). If you buy in a subdivision, read the specifications. In the 2009 case, the subdivision offered no guarantee of sunlight.
• Negotiate an easement of view or sunlight: if you own a developable plot, you can ask your neighbour to sign an easement (a real right) guaranteeing you a certain amount of light. This is done before a notary and may cost between €500 and €2,000, but it secures your property.
• Rely on mediation: before starting a lawsuit, try mediation. The cost is modest (often €200 to €400 per party) and it can lead to an amicable agreement (for example, the developer agrees to move the building 2 metres). undefined, I have seen cases where a simple lawyer's letter sufficed to resolve the situation.

Further Reading: Related Case Law and Developments

This decision is part of a consistent line. For example, a Court of Cassation decision of 7 November 2018 (No. 17-24.576) held that loss of view due to a construction compliant with the PLU is not an abnormal disturbance if the owner could foresee urban evolution. Conversely, in a decision of 13 February 2020 (No. 18-23.473), the Court found an abnormal disturbance for noise nuisance exceeding standards, but again, the context was different (industrial activity in a residential zone).

The trend of the courts is clear: regarding sunlight and view, judges favour a flexible assessment, taking into account actual urbanisation and forecasts of planning documents. Beware however: if the construction violates the PLU (for example, excessive height), the disturbance becomes abnormal as of right. For the future, with densification of cities, this principle could be reinforced, but neighbouring owners will have to be extra vigilant.

Frequently Asked Questions

What to do if my neighbour builds a building that deprives me of sunlight?
First check if the planning permission complies with the PLU. Then gather evidence (photos, sunlight hours before/after). Consult a lawyer to assess if the disturbance is abnormal. If the construction is compliant, your chances of obtaining compensation are low.

Can I obtain compensation for loss of sunlight?
Yes, if the disturbance is abnormal. But case law is strict. You must demonstrate that the loss is excessive compared to normal neighbourhood inconveniences. An expert report (€500 to €1,500) may be necessary.

What time limits to take legal action?
You have 5 years from the date you became aware of the disturbance (Article 2224 of the Civil Code). In practice, act quickly to avoid prescription.

Can I have my neighbour's planning permission annulled?
Yes, if you have a legitimate interest to act (for example, direct loss of view). The appeal must be lodged within 2 months of the display of the planning permission. After that time, it is too late.

Can a tenant sue the landlord for loss of sunlight?
Yes, if the dwelling becomes unfit for its purpose (for example, total deprivation of light). But the tenant must sue the landlord, not directly the builder. A rent reduction is possible.

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 →