Oblique action in co-ownership: when a neighbour can have your lease terminated

Imagine you own an apartment in Biscarrosse, overlooking the lake. You spend your weekends there to enjoy the peace and quiet. But for the past six months, the tenant downstairs has been hosting parties until 3am, with loud music and persistent cooking smells. You have alerted their landlord, who does nothing. What can you do? Must you endure these nuisances indefinitely?

I encounter this situation regularly in my practice in Mont-de-Marsan. Co-owners exasperated by noisy tenants, landlord-owners turning a blind eye, and co-ownership regulations flouted daily. The question often arises: can one take direct action against the tenant, even if their landlord does nothing?

The Cour de cassation answered clearly on 8 April 2021. In a landmark decision, it confirmed that any co-owner can, through an oblique action (an action that allows a creditor to exercise the rights of their debtor), exercise the rights of the landlord-owner to obtain the termination (early ending) of a lease when the tenant violates the co-ownership regulations. A quiet revolution that profoundly changes the balance of power in co-ownership.

The facts: a story that happens every day

The story begins like so many others. Mr U... and Mrs G..., co-owners in a building, have endured for months noise and odour nuisances coming from the commercial premises on the ground floor. These premises are leased by their owner, Mr P..., to the company FMJ Scooter, which operates a two-wheeler repair business there.

The nuisances are concrete: noise from tools and machinery, smells of oil and petrol rising into the common areas and apartments. The co-owners have repeatedly alerted the landlord-owner, Mr P..., who has taken no measures. They have also contacted the co-ownership syndic, but without tangible results.

Exasperated, Mr U... and Mrs G... decide to take legal action. But against whom? The tenant directly? Their owner? They sue both, requesting termination of the commercial lease for violation of the co-ownership regulations. Their argument: the repair activity generates nuisances contrary to the rules of communal living established in the regulations, which are nevertheless annexed to the lease.

The landlord-owner, Mr P..., defends himself by arguing that the aggrieved co-owners cannot take direct action against his tenant. According to him, only the syndic or himself could initiate such an action. The tenant, the company FMJ Scooter, minimises the nuisances and invokes proper performance of its lease.

First twist: the court rules in favour of the co-owners and orders termination of the lease. But the company FMJ Scooter appeals. The court of appeal overturns the judgment, considering that the co-owners do not have standing (the legal capacity) to take direct action against the tenant. It is at this stage that the case reaches the Cour de cassation, the highest French judicial court.

The court's reasoning — dissected

The Cour de cassation quashed (annulled) the court of appeal's ruling and referred the case to another court of appeal. Its reasoning rests on two key legal pillars, which I will explain simply.

First foundation: the oblique action, provided for in article 1341-1 of the Civil Code (which allows a creditor to exercise the rights and actions of their debtor). The judges considered that the co-owners, as creditors of the landlord-owner for compliance with the co-ownership regulations, could exercise in his place his right to request termination of the lease. In other words, since Mr P... did nothing when he had the duty to act, his neighbours could act in his place.

Second foundation: violation of the co-ownership regulations, which were annexed to the lease. The commercial lease contained a clause requiring the tenant to comply with the regulations. By generating noise and odour nuisances, the company FMJ Scooter violated this contractual obligation. What few people know: when the regulations are annexed to the lease, their violation constitutes a contractual fault by the tenant, giving grounds for termination.

The Court rejected the landlord-owner's argument that only the syndic or himself could act. It recalled that each co-owner has a direct interest in stopping abnormal neighbourhood disturbances, and that the oblique action is precisely designed for these situations where the debtor (here the landlord-owner) remains inactive.

This decision confirms and strengthens prior case law. It is not a reversal (a complete change of position), but an important clarification. The judges considered that protecting tranquillity in co-ownership justified this broad interpretation of the oblique action. In plain terms: if your tenant neighbour makes your life miserable and their owner does nothing, you can take matters into your own hands.

What this changes for you — concretely

But what exactly does this change in your daily life? Let's look at this profile by profile.

If you are a co-owner victim of nuisances: you now have a powerful legal weapon. Before, you had to convince the syndic or the landlord-owner to act. Now, you can take direct action against the at-fault tenant, even if their owner opposes it. undefined in Mont-de-Marsan, I have encountered cases where co-owners endured nuisances for years because the landlord refused to terminate a lucrative lease. Now, they can bypass this inertia.

If you are a landlord-owner: be careful though! You can no longer turn a blind eye to your tenants' conduct. If you do not respond to legitimate complaints, your neighbours can act in your place. Worse: you could be ordered to pay damages for negligent failure to act. A concrete example: in Mont-de-Marsan, an owner who leased premises to a noisy bar had to pay €8,000 in damages to his neighbours for not acting in time.

If you are a tenant: scrupulously comply with the co-ownership regulations, especially if they are annexed to your lease. Repeated nuisances can now lead to termination of your lease, not only by your landlord, but also by your neighbours. Timeframes? An urgent procedure (référé) can conclude in 2-3 months. For a full trial, expect 12-18 months.

If you are a purchaser: carefully check ongoing leases and any co-ownership disputes. A problematic tenant can now be removed more easily, but this can also generate conflicts. In co-ownerships in Biscarrosse, I always advise requesting the last three general meetings from the syndic to detect potential nuisance problems.

The amounts at stake are significant: a full procedure costs between €3,000 and €8,000 in lawyer's fees, plus any damages. But compared to loss of property value or years of nuisances, the investment may be worth it.

Four tips to avoid this type of dispute

• Systematically annex the co-ownership regulations to the lease: whether you are a landlord or tenant, require that the regulations be attached to the lease contract. This simple formality transforms compliance into a contractual obligation, which significantly strengthens your position in case of dispute.
• Document nuisances precisely: keep a nuisance log with dates, times, nature of disturbances, and if possible recordings or bailiff's reports. undefined, I have seen cases fail due to insufficient evidence. A bailiff's report costs about €200-400 but can be decisive.
• First go through amicable and syndic channels: before initiating legal action, send registered letters to the tenant, landlord-owner, and syndic. A formal formal demand often yields results and strengthens your legal position if you must go to court.
• Consult a specialised lawyer at the first signs: do not let the situation escalate. Early consultation (like those I offer at €45 for 30 minutes) allows identifying the right strategy and avoiding costly mistakes. Many clients come to me after trying to resolve the problem themselves, which worsened the situation.

Deep dive: related case law and developments

This decision fits into a jurisprudential trend (the body of court decisions) favourable to protecting co-owners against nuisances. Already in 2015, the Cour de cassation had accepted that a co-owner could take direct action against another co-owner for violation of the regulations (Cass. 3e civ., 15 April 2015, no. 14-10.305).

The novelty here is the extension of this principle to the tenant, via the oblique action. A prior decision by the Paris Court of Appeal (CA Paris, 4 February 2020, no. 19/02301) went in the same direction, but it is the Cour de cassation that gives this solution national scope.

The trend is clear: courts are strengthening the tools available to co-owners to enforce rules of communal living. This corresponds to a social evolution where quality of life in collective housing becomes a major concern. What this means for the future? Probably an increase in this type of legal action, and greater accountability of landlords.

Be careful though: this case law does not allow action against any disturbance. There must be abnormal, repeated nuisances, and a clear violation of the regulations. A simple occasional inconvenience will not suffice.

Frequently asked questions

Q: Does this also work for residential leases?
A: Yes, the principle is the same. If a tenant of an apartment violates the co-ownership regulations (noise nuisances, prohibited animals, etc.), co-owners can act via the oblique action.

Q: Must one go through the co-ownership syndic?
A: No, the oblique action can be exercised directly by any concerned co-owner. But informing the syndic is recommended to strengthen your position.

Q: How long does such a procedure take?
A: In urgent proceedings (référé), 2-4 months. For a full trial, 12-24 months depending on case complexity and court backlog.

Q: What are the risks if I act and lose?
A: You could be ordered to pay the opposing party's legal costs (€2,000 to €5,000 on average). Hence the importance of good preparation and prior legal advice.

Q: What if the co-ownership regulations are not annexed to the lease?
A: The situation is more complex, but action remains possible on the basis of abnormal neighbourhood disturbances. The oblique action would then be more difficult to implement.

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