Civil Code (Cap. 16), article 366

366. (1) If the owner consents to carry out the extraordinary repairs, he shall be entitled to recover from the usufructuary, during the continuance of the usufruct, the interest on the amount of the expenses which he shall prove to have incurred. (2) The said interest shall run from the day on which the account of such expenses shall have been approved by the usufructuary, or by the court upon a sworn application issued against the usufructuary. Where part of building falls down through age, etc.