The fact that the rental value of residential premises has increased faster than that of commercial premises as such cannot in itself justify a departure from the rent capping rules

Practical application:

The Cour de cassation decision of 8 December 1976 explicitly rejects using the differential between residential and commercial rental value growth as the sole reason to bypass rent capping rules. The landlord must instead base any increase on one of the legally recognised grounds (e.g., significant improvements, change in local factors) documented with evidence. Attempting to rely solely on market trends will likely be struck down in court, risking legal fees and delayed rent adjustments.

Practical application:

This case law confirms that a landlord cannot justify exceeding the rent cap simply because residential rents have outpaced commercial rents. The tenant should formally contest the increase by registered letter, referencing the 1976 decision and reminding the landlord that only specific exceptions (works, modifications to the premises, etc.) may allow uncapped revisions. If no agreement is reached, the tenant can apply to the local rental tribunal (commission départementale de conciliation) for a ruling.

Practical application:

Relying on the general increase in residential rental values to push through an uncapped rent increase would directly contradict this case law. As the new owner, you are bound by the same rent control rules. Any review must follow legal indexation or rely on one of the strict exceptions (e.g., you carry out major renovations). Before purchasing, factor in that the rent can only increase according to the index, and budget accordingly to avoid a financial shock.