Article 474

One who in good faith employs the material of another in whole or in part in order to make a thing of a different kind, shall appropriate the thing thus transformed as his own, indemnifying the owner of the material for its value.

If the material is more precious than the transformed thing or is of more value, its owner may, at his option, appropriate the new thing to himself, after first paying indemnity for the value of the work, or demand indemnity for the material.

If in the making of the thing bad faith intervened, the owner of the material shall have the right to appropriate the work to himself without paying anything to the maker, or to demand of the latter that he indemnify him for the value of the material and the damages he may have suffered. However, the owner of the material cannot appropriate the work in case the value of the latter, for artistic or scientific reasons, is considerably more than that of the material. (383a)