2951. A hypothec on a movable subsequently incorporated into an immovable, having become an immovable hypothec, may not be set up against third persons before its registration in the land register.
The first hypothec registered in the land register has priority of rank, whether it be the hypothec on the movable subsequently incorporated into the immovable, or the immovable hypothec on the same immovable.
Registration in the land register of the hypothec on the movable is obtained by presenting a notice containing the description of the immovable concerned, a reference to the act creating the hypothec and its registration in the register of personal and movable real rights, and an indication of the particular sum for which the hypothec was granted.