Article 815-18 of the French Civil Code
The provisions of articles 815 to 815-17 are applicable to undivided interests in usufruct insofar as they are compatible with the rules of usufruct. The notifications provided for by articles 815-14, 815-15 and 815-16 must be sent to any bare owner and any usufructuary. However, a usufructuary may only acquire a bare ownership share if no bare owner acquires it; a bare owner may only acquire a usufruct share if…