Civil Code (Cap. 16), article 542

542. (1) A possessor in good faith may demand from the owner the reimbursement of the necessary expenses whether their effect continues or not. (2) As regards useful expenses, the owner is bound either to refund to the possessor the cost of the work or, at his option, to pay to him a sum corresponding to the enhanced value of the thing. (3) The court may, according to c ircumstances, direct that the refund of the expenses made on an immovable, be effected by the owner by means of a rent-charge secured by the hypothecation of the immovable, or in any other manner as to fully satisfy the d ebt and which is at the same time less onerous to the debtor. Possessor in bad faith.