What are the criteria for determining if an item is a component of an immovable?


Article 466. Component parts of a building or other construction Things that are attached to a building and that, according to prevailing usages, serve to complete a building of the same general type, without regard to its specific use, are its component parts. Component parts of this kind may include doors, shutters, gutters, and cabinetry, as well as plumbing, heating, cooling, electrical, and similar systems. Things that are attached to a construction other than a building and that serve its principal use are its component parts. Other things are component parts of a building or other construction if they are attached to such a degree that they cannot be removed without substantial damage to themselves or to the building or other construction.
Article 508. Things principal and accessory
Things are divided into principal and accessory. For purposes of accession as between movables, an accessory is a corporeal movable that serves the use, ornament, or complement of the principal thing.
In the case of a principal thing consisting of a movable construction permanently attached to the ground, its accessories include things that would constitute its component parts under Article 466 if the construction were immovable.

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