Mixed Residential and Professional Lease: When Does the 1989 Decree Apply?

Imagine: you own a flat in Mougins, let since 1990 to a lawyer who receives clients there and lives there. The lease comes up for renewal in 1994. You want to apply the new rules of the law of 6 July 1989 (which gives greater protection to tenants), but your tenant disputes this, arguing that the original lease was a commercial lease. Who is right? This is exactly the question the French Court of Cassation had to decide in a judgment of 11 June 1997 (No. 95-16.736). A decision which, thirty years later, continues to shed light on relations between landlords and tenants in mixed-use lettings.

You may be asking yourself this question if you rent a property in Antibes to carry on a liberal profession while living there. Or if you own commercial premises with attached living accommodation. The law in fact distinguishes between several regimes: the 1989 law for residential tenancies, the commercial lease regime for professional premises, and a specific regime for mixed leases. But how do you know which one applies when the lease was concluded before the 1989 law came into force?

The judgment of 11 June 1997 provides a clear answer: for a lease renewed after 1989, it is the decree of 28 August 1989 (which laid down the conditions for applying the 1989 law) that applies, provided that the premises are used for both residential and professional purposes. But beware: the residential use must be the main one. The Court of Cassation criticises the court of appeal for not having verified this point. Full analysis.

The facts: a story like many that happen every day

In 1990, the Y... family granted a lease of a flat in Paris to Mr X. The contract specifies that the premises are intended for residential and professional use. Mr X sets up his law practice there and lives there. In 1994, the lease expires and the parties negotiate a renewal. A disagreement arises as to the applicable regime: the landlord considers that the new lease is subject to the law of 6 July 1989 (which limits the grounds for repossession and regulates rents), while the tenant maintains that the original lease, concluded before this law came into force, remains governed by the 1953 decree-law on commercial leases, which is more favourable to the tenant.

The landlord brings court proceedings. At first instance, the court rules in his favour. The tenant appeals. The Paris Court of Appeal, in a judgment of 11 May 1995, upholds the judgment: it considers that the renewed lease is subject to the decree of 28 August 1989, issued for the application of the 1989 law, because the original lease was for premises used for residential and professional purposes. The tenant appeals to the Court of Cassation.

Before the Court of Cassation, the tenant puts forward a technical argument: the decree of 28 August 1989 applies only to leases concluded after its entry into force, and not to renewed leases. He adds that the 1989 law itself excludes leases in force on its effective date. But the Court of Cassation dismisses the appeal. It approves the court of appeal's finding that the renewed lease is a new contract, distinct from the original lease, and is therefore subject to the provisions in force at the time of renewal. However, it criticises the court of appeal on a crucial point: it did not verify whether residential use was the main one. For the 1989 decree to apply, the premises must be used as a main residence or for mixed professional and main residence use. If professional use is predominant, the commercial lease regime may apply.

The court's reasoning — analysed

The solution adopted by the Court of Cassation rests on two pillars: first, the characterisation of the renewed lease as a new contract; second, the distinction between main and ancillary use.

First pillar: the renewed lease is a new lease. In French law, the renewal of a lease is not simply an extension of the original contract. It is a new contract that replaces the previous one. The Court of Cassation implicitly recalls this: it is the date of renewal that determines the applicable law, not the date of the original lease. Thus, a lease concluded in 1990 but renewed in 1994 is subject to the texts in force in 1994, in this case the decree of 28 August 1989 (issued under the law of 6 July 1989). This decree applies to lettings used as a main residence or for mixed professional and main residence use.

Second pillar: residential use must be the main one. The 1989 law governs only lettings used as a main residence. For mixed leases, it applies if the residential use is the main one. If professional use is predominant, the lease then falls under the commercial lease regime (decree of 30 September 1953) or the professional lease (law of 29 January 1993). The court of appeal had merely noted that the lease was for premises used for residential and professional purposes, without determining which use prevailed. The Court of Cassation criticises this lack of precision: it should have investigated whether residential use was the main one. In other words, just because a lease mentions a dual purpose does not automatically mean it is subject to the 1989 law.

What few people know is that this distinction is often a source of litigation. undefined, I have come across cases where a liberal professional used 70% of the surface area for their practice and only 30% for their home. In that case, the commercial lease may apply, with very different consequences (right to renewal, rent calculation, etc.).

The decision therefore confirms the previous case law on the innovative nature of renewal, but introduces a requirement for increased reasoning for the lower courts. It is not a reversal, but a methodological reminder.

What this means for you — practically

This decision has immediate practical implications for all property players, whether you are in Mougins, Antibes or elsewhere.

For landlord owners: If you grant a lease for mixed-use premises, you must determine which use is the main one. For example, an 80 m² flat in Antibes, with 20 m² used as a medical practice and 60 m² as a home, is very likely to be mainly residential. In that case, the 1989 law applies: you cannot repossess the property without a legitimate and serious reason, the rent is regulated by the reference index of rents (IRL), and the tenant has a right to renewal. Conversely, if professional use is the majority, the commercial lease regime applies: the tenant has a right to renewal (except in limited cases), but the rent is freely set (capped only if the lease is for a term of less than 9 years).

For tenants: If you are a tenant of a mixed-use property, check your lease. If residential use is the main one, you benefit from the protection of the 1989 law: limited notice from the landlord, right to renewal, capped rent. If professional use is the main one, you may be under the commercial lease regime, with an almost automatic right to renewal but potentially higher rents. Concrete example: a lawyer rents a 100 m² flat in Mougins to live in and receive clients. The lease says "residential and professional use". If the courts consider that residential use is the main one, the landlord cannot give notice to sell without respecting a 6-month notice period and without a genuine and serious reason. If professional use is deemed to be the main one, the landlord could give notice to sell, but the tenant would be entitled to compensation for eviction.

For buyers: If you buy a property let under a mixed lease, you must analyse the applicable regime before signing. A lease subject to the 1989 law commits you to strict repossession conditions. A commercial lease may oblige you to pay compensation for eviction if you want to recover the premises. Take advice before buying.

Four tips to avoid this type of dispute

• Draft the lease precisely: Clearly state the purpose of the premises and, if possible, the area devoted to each use. For example: "The tenant shall carry on his profession as a lawyer in a room of 20 m² and live in the remainder of the dwelling of 80 m²." This will facilitate characterisation in the event of a dispute.
• Check the actual use of the premises: If you are a landlord, do not hesitate to ask the tenant to specify in writing the allocation of rooms. In the event of a dispute, the courts base their decision on actual use, not just the terms of the lease.
• Anticipate renewal: When the lease expires, determine the applicable regime according to the factual situation. If you wish to repossess the property, check that you comply with the conditions of the applicable law (legitimate reason for the 1989 law, absence of right to renewal for commercial leases).
• Consult a lawyer lawyer at the first sign of difficulty: A mistake in characterisation can have serious financial consequences. For example, a landlord who gives notice to sell believing he is under the 1989 law regime when the lease is commercial may be obliged to pay compensation for eviction of several years' rent.

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Further analysis: related case law and developments

This 1997 decision is part of a consistent line of the Court of Cassation. Already, in a judgment of 12 February 1992 (No. 90-15.487), the Court had held that the renewed lease was a new contract subject to the law in force at the time of renewal. The 1997 decision confirms this position.

More recently, the Court of Cassation has clarified that the characterisation of main use must be assessed in the light of the contractual purpose and the actual use of the premises (Civ. 3e, 10 March 2016, No. 15-10.606). Thus, even if the lease mentions mixed use, if the tenant uses the entire premises for professional purposes, the lease may be recharacterised as a commercial lease.

The jurisprudential trend is therefore towards a concrete analysis of each situation, on a case-by-case basis. The courts are not satisfied with the terms of the lease; they examine the reality of the occupation. For the future, it can be expected that the courts will continue to favour actual use over formal characterisation, which reinforces the need to document precisely the allocation of the premises.

Checklist before acting

FAQ: 5 questions you are asking

1. My lease mentions "residential and professional use": am I automatically under the 1989 law? No. It is necessary to verify whether residential use is the main one. If professional use predominates, the lease may be commercial.
2. Can I give notice to my tenant to sell if the lease is mixed? If the 1989 law applies, yes, but with a 6-month notice period and a genuine and serious reason (the sale). If the lease is commercial, you cannot give notice to sell without paying compensation for eviction.
3. How can I prove that residential use is the main one? By any means: habitable surface area, time spent, tax returns, electricity bills, etc. A bailiff's report may be useful.
4. What is the time limit for challenging the characterisation of my lease? You can act at any time, but it is preferable to do so before the expiry of the lease or upon notice. After a certain period, the characterisation may be considered as established.
5. Do I have to draft a new lease at each renewal? No, a renewal addendum is sufficient, but it must specify the date and the applicable conditions. Caution: renewal creates a new contract, so the clauses must comply with the law in force.

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