Article L145-4 of the French Commercial code
The term of the lease may not be less than nine years. However, the lessee has the option of giving notice of termination at the end of a three-year period, at least six months in advance, by registered letter with acknowledgement of receipt or by extrajudicial act. Leases concluded for a term of more than nine years, leases for premises built for a single use, leases for premises used exclusively…