Renewal of Commercial Lease: Which Reference Index to Use for Rent Revision?

You are the owner of a commercial property in Mérignac, and your tenant has just announced that they wish to renew the lease. You are wondering what rent to apply? The question seems simple on the surface, but it hides a formidable legal trap. The reference index to be used for the rent revision can vary the amount by several hundred euros per month. In a decision of 8 September 2016, the French Supreme Court ruled: it is the effective date of the renewed lease that counts, not the due date of the rent. But what exactly does that change? Let us decipher it.

The facts: a story like many others

Mr X, owner of a commercial property in Pessac, leases a business to the company Bécon Tabac. The initial lease runs until 23 June 2008. At expiry, the parties fail to agree on the new rent. The rent judge is seised. During the proceedings, the SCI Daitouch, the new owner, requests the triennial revision of the rent. The question that arises is: to calculate the revised rent, should one take the reference index (i.e., the commercial rent index, ILC, or the tertiary activities index, ILAT) at the date of renewal of the lease (23 June 2008) or at the rent due date (generally 1 July 2008)?

The company Bécon Tabac contests the decision of the Court of Appeal which fixed the revised rent as from 23 June 2008. According to it, the increase or decrease in rent should apply from the date of the last judicial determination of the rent, if that is prior to the renewal date. But the French Supreme Court does not follow this reasoning. It quashes the judgment and refers the case to another Court of Appeal.

The reasoning of the court — analysed

The legal basis is Article L. 145-38 of the Commercial Code, which allows the triennial revision of rent for commercial leases. The French Supreme Court recalls that, in case of lease renewal, the starting point of the revision is the effective date of the new lease. In other words, the initial reference index is that in force at the renewal date, not at the rent due date. This is a confirmation of previous case law, but with an important clarification: when the two dates do not coincide (which is frequent), the effective date prevails.

In clear terms, if your lease is renewed on 1 January, but the rent is due on the 5th of the month, the index to be used is that of 1 January. What few people know is that this rule applies both for rent increases and decreases. undefined, I have come across cases where landlords had wrongly used the index of the due date, which cost them several thousand euros in unpaid rent.

In other words, the judges considered that the logic of lease renewal is to fix a new rent at the effective date of the new lease, not at a later date linked to the receipt of rent. This is a strict interpretation but consistent with the spirit of the text.

What this changes for you — concretely

For the landlord: you must imperatively check the effective date of your renewed lease. If you use the index of the due date, you risk undervaluing or overvaluing the rent. For example, in Pessac, a commercial property of 100 m² with a rent of €1,500 per month, a variation of index of 2% represents €30 per month, i.e., €360 per year. Over 9 years (the duration of a commercial lease), this can represent a difference of more than €3,000.

For the tenant: you must ensure that the landlord applies the correct index. If you notice an error, you can contest the rent and request a refund of overpayments. However, beware: the limitation period is 5 years (Article 2224 of the Civil Code).

For the purchaser of a commercial property: when taking over an existing lease, ask for the history of indices used. An error in the reference index can affect the value of the business.

If you are in this situation, you must check the exact renewal date of your lease and the corresponding index. The simplest is to consult a lawyer lawyer who can calculate the revised rent in accordance with the case law.

Four tips to avoid this type of dispute

• Keep all amendments and renewal notices: the effective date of the renewed lease is often specified in a deed signed by the parties. Keep a written record.
• Systematically use the official index published by INSEE: for commercial leases, indices are published quarterly. Check the correct period.
• Make the renewal date coincide with the due date: if possible, negotiate a renewal date on the same day as the rent payment to avoid any confusion.
• In case of disagreement, seize the rent judge quickly: the procedure is relatively simple and can avoid years of litigation. Do not wait until the situation escalates.

Further analysis: related case law and developments

This decision is part of a consistent line of the French Supreme Court. Already in 2012, a judgment (Civ. 3e, 14 November 2012, No. 11-24.371) had ruled that the reference index for the revised rent is that of the renewal date. The 2016 decision therefore only confirms this position. However, an earlier decision (Civ. 3e, 9 June 2010, No. 09-13.042) had left doubt by mentioning the due date. The 2016 judgment dispels any ambiguity.

The trend of the courts is therefore clear: the effective date of the renewed lease is the sole reference. For the future, practitioners recommend including in the lease a clause explicitly specifying the reference index to be used, to avoid any challenge.

Summary and next steps

FAQ:

• Which index should I use to revise my rent after renewal? The index in force at the effective date of the new lease, not at the rent due date.
• Can I contest a rent calculated with the wrong index? Yes, within 5 years from the payment of the contested rent.
• What if the landlord refuses to apply the correct index? Seise the commercial rent judge of the competent judicial court.
• Does this rule also apply to residential leases? No, it concerns only commercial leases governed by the Commercial Code.

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