CC 1250     

Art. 1250.  Immovables destroyed while in possession of donee.

Immovable property, given by a father, mother or other ascendant, to one of their children or descendants, and which has been destroyed by accident, while in the possession of the donee and without his fault, previous to the opening of the succession, is not subject to collation.

If, on the contrary, it is by the fault or negligence of the donee that the immovable property has been destroyed, he is bound to collate to the amount of the value which the property would have had at the time of the opening of the succession.