The subtenant may apply to the principal tenant for renewal of its lease to the extent of the rights that the principal tenant itself has from the landlord. The lessor is called upon to assist in the act, as provided for in article L. 145-31.
At the expiry of the main lease, the landlord is only obliged to renew if he has, expressly or tacitly, authorised or approved the sublease and if, in the case of a partial sublease, the premises that are the subject of the main lease do not form an indivisible whole materially or in the common intention of the parties.