Notarial deed, published in the land register, the main purpose of which is to subject an immovable to the divided co-ownership regime by the method of concomitant declarations of co-ownership. The declaration of co-ownership is published on one of the private portions of the initial co-ownership. The co-ownership resulting from this declaration of co-ownership is legally independent of the other concomitant co-ownerships, both in the management and the maintenance of its building, while being included in the initial co-ownership. This type of co-ownership can be vertical (residential tower) or horizontal (townhouse complex).