Mixed Residential and Professional Lease: Which Court Has Jurisdiction?

You rent a flat in Antibes, and in the same dwelling you carry on a small professional activity — graphic designer, architect, self-employed nurse. Or you own premises in Cagnes-sur-Mer that you let to a trader who also lives there. How far does the tenant's protection extend? And above all, which court should hear a dispute? The question is not trivial: it determines the applicable rules, time limits, and sometimes the outcome of the conflict.

The judgment of the Court of Cassation of 17 November 2016 (No. 15-25.265) provides a clear answer: the tribunal d'instance (now the tribunal judiciaire since 2020) has jurisdiction to hear actions relating to mixed leases, i.e. those covering both residential and professional use. This decision follows a Parisian case, but its practical consequences are felt as far as the Alpes-Maritimes.

In this article, I explain the facts, the judges' reasoning, and above all what this changes for you, whether you are a landlord or a tenant. With concrete examples in Antibes and Cagnes-sur-Mer — because the law does not live in books, it applies to our lives.

The facts: a story that happens every day

Imagine Mr and Mrs R., a couple renting a flat in Paris. The lease was signed in 1998. But Mr R. is a lawyer and receives his clients in one room of the flat. The lease says nothing specific about professional use. In 2013, the landlords (the U. consortium) give notice to the couple to sell the dwelling. Mr and Mrs R. contest: according to them, the lease is a residential lease subject to the 1989 Act, which protects tenants. The landlords retort that it is a mixed lease, because Mr R. carries on his professional activity there, and therefore the tribunal d'instance would not have jurisdiction — it should be the tribunal de grande instance (TGI) that decides. Why is this distinction crucial? Because the tribunal d'instance applies rules more favourable to the tenant (notice period, protection against eviction...). The TGI, on the other hand, deals with commercial or professional leases under the Commercial Code, which is less protective.

The landlords raise the lack of jurisdiction of the tribunal d'instance before the interim relief judge. The tribunal d'instance declares itself competent. The landlords appeal. The Paris Court of Appeal, on 3 July 2015, reverses this decision: according to it, the lease is mixed because Mr R. carries on his profession there, and therefore the tribunal d'instance does not have jurisdiction. The tenants appeal to the Court of Cassation.

The case comes before the Court of Cassation, which must decide a question of subject-matter jurisdiction: can the tribunal d'instance hear a mixed lease, or must one systematically go to the TGI?

The reasoning of the court — analysed

The Court of Cassation quashes the Court of Appeal's judgment and restores the jurisdiction of the tribunal d'instance. Its reasoning is summed up in one sentence: "The tribunal d'instance, which hears actions concerning a contract for the occupation of a dwelling, is competent to hear actions relating to mixed leases, for residential and professional use." In other words, as soon as the contract relates to a dwelling (even for mixed use), the tribunal d'instance has jurisdiction.

To understand, we must refer to Article L. 213-4-5 of the Code of Judicial Organisation (in its version then in force), which gives the tribunal d'instance jurisdiction over actions "concerning a contract for the occupation of a dwelling". The legislature did not distinguish according to whether the dwelling is used exclusively for residential purposes or for mixed use. The Court of Cassation gives a literal interpretation: if the contract concerns the occupation of a dwelling, it does not matter that it is also used for a professional activity.

However, note that this does not mean that all the rules of the residential lease automatically apply. The tribunal d'instance judge will have to determine, according to the circumstances, whether the lease is subject to the 1989 Act (tenant protection) or the status of professional leases (1949 Act for liberal professions). But jurisdiction is clearly with the tribunal d'instance.

What few people know is that this decision follows a line of case law favourable to tenant protection. Already in 2013, the Court of Cassation had held that the tribunal d'instance had jurisdiction over residential leases even if the tenant carried on an ancillary activity there (Civ. 3e, 30 May 2013, No. 12-18.120). The 2016 judgment confirms and extends this principle to mixed leases where the professional activity is not ancillary.

What this changes for you — concretely

For landlord owners in Antibes or Cagnes-sur-Mer: if you let a dwelling to a liberal professional (nurse, lawyer, consultant), you cannot invoke the jurisdiction of the tribunal de grande instance to escape the protective rules of the residential lease. For example, the notice period for a sale is 6 months (1989 Act), compared to 3 months for a professional lease. If your tenant pays his rent one month late, you will have to apply to the tribunal d'instance, not the TGI. Concretely, this means that you must follow the procedures of ordinary tenancy law, even if the dwelling also serves as a surgery.

For tenants: this decision strengthens your protection. Imagine you are a hairdresser in Cagnes-sur-Mer and you live above your salon. The landlord gives you notice to sell. You can contest this notice before the tribunal d'instance, which will apply the rules of the 1989 Act: the notice must be justified (e.g., the sale must be genuine), and you have a notice period of 6 months. If the court had been declared incompetent, you would have had to go to the TGI, with less favourable rules and higher costs (mandatory lawyer).

In practice, in my career, I have come across cases where landlords tried to challenge the jurisdiction of the tribunal d'instance to gain time. This decision puts an end to such manoeuvres. If you are in this situation, you must check the nature of your lease: if it mentions "residential use" even with a professional activity, the tribunal d'instance remains competent.

Four tips to avoid this type of dispute

• Draft a precise lease on the authorised use. If you authorise a professional activity, mention it clearly in the contract. Indicate whether it is exclusive or ancillary. This will avoid any dispute over the nature of the lease.
• Declare the professional activity to the landlord in writing. If you are a tenant and you carry on an activity at home, inform your landlord by recorded delivery letter. Keep a copy. In the event of a dispute, you will prove that the activity was known and accepted.
• Check the co-ownership rules. Some co-ownerships prohibit professional activities. In Antibes, for example, a rule may restrict use to strict residential purposes. Make sure your activity complies.
• In case of dispute, apply to the tribunal d'instance. Do not be intimidated by an argument about lack of jurisdiction. The case law is clear: the tribunal d'instance has jurisdiction over mixed leases. If the judge considers that the lease is professional, he will refer the case, but this is rare.

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Further analysis: related case law and developments

This decision is part of a protective trend for tenants. Already in 2013, the Court of Cassation had held that the tribunal d'instance had jurisdiction over residential leases even if the tenant carried on an ancillary activity there (Civ. 3e, 30 May 2013, No. 12-18.120). The 2016 judgment goes further by including mixed leases where the professional activity is not ancillary.

Since 2020, the tribunaux d'instance and de grande instance have merged into tribunaux judiciaires. But the subject-matter jurisdiction remains the same: the protection disputes division (formerly the TI) hears disputes concerning residential leases, including mixed ones. This decision is therefore still relevant.

However, note that there is an exception for pure commercial leases (Act of 30 June 1926). If the premises are exclusively commercial, the commercial court has jurisdiction. But as soon as there is a main residence, the tribunal judiciaire (protection division) has jurisdiction.

Frequently asked questions

What exactly is a mixed lease?
A mixed lease is a rental contract that allows the tenant to use the dwelling both as his residence and for a professional activity (liberal profession, craft, etc.). For example, an architect who receives clients in his living room.

Can I be evicted more easily if my lease is mixed?
No. The jurisdiction of the tribunal d'instance guarantees you the application of the 1989 Act, which protects the tenant. Eviction can only take place after an unsuccessful payment demand (2-month period) or a regular notice.

Must I declare my professional activity to the landlord?
Yes, it is strongly recommended. If you do not, the landlord could invoke an unauthorised change of use to demand termination of the lease.

What are the time limits for applying to the court?
For a contested notice, you have 2 months from receipt to apply to the court. For unpaid rent, the landlord can act as early as the first month of arrears, but must first send a payment demand (2-month period).

Does this decision apply to holiday lets?
No, holiday lets (such as Airbnb) are not residential leases within the meaning of the 1989 Act. The competent court is then the tribunal judiciaire in its classic formation.

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