Unless otherwise stipulated in the lease or agreed by the lessor, any total or partial subletting is prohibited.
In the event of an authorised sublease, the landlord is called upon to contribute to the deed.
Where the sublease rent is higher than the price of the main tenancy, the landlord is entitled to demand a corresponding increase in the rent of the main tenancy, an increase which, in the absence of agreement between the parties, is determined in accordance with a procedure laid down by decree in the Conseil d’Etat, pursuant to the provisions of Article L. 145-56.
The tenant must inform the landlord of his intention to sublet by extrajudicial act or by registered letter with acknowledgement of receipt. Within fifteen days of receiving this notice, the landlord must indicate whether he intends to contribute to the deed. If, despite the authorisation provided for in the first paragraph, the landlord refuses or fails to reply, the matter is passed over.