Question juridique clé
Whether the tenants' filing was a challenge to an initial rent or a rent increase
Solution extraite
The dispute concerned a rent increase, because the parties had already been bound by a concierge contract including a lease element for the same apartment.
Motifs extraits
The concierge arrangement was a mixed contract; the housing component had existed since 1976, so the 2001 contract concerned renewed lease conditions, not an initial rent.