Article 815-14 of the French Civil Code
An undivided co-owner who intends to transfer, for valuable consideration, all or part of his rights in the undivided property or in one or more of these properties to a person outside the joint ownership is required to notify the other undivided co-owners by extrajudicial act of the price and conditions of the proposed transfer and the name, domicile and profession of the person proposing to acquire. Any undivided co-owner…