Civil Code (Cap. 16), article 543

543. (1) In relation to a possessor in bad faith, the owner has, in respect of necessary expense s, and of useful expenses for meliorations which cannot be removed, the same obligations as a n owner has in relation to a possessor in good faith, provided possession of the thing shall not have been obtained by theft or some other offence which does not fall under the class of contraventions. (2) As regards useful expenses for meliorations which can be removed, the owner may elect eit her to retain such meliorations or to compel the possessor to remove them. (3) If the owner demands the rem oval of such meliorations, the possessor shall remove them at his expense without any right to indemnity, and he shall be bound to make good to the owner any damage which the latter may have suffered. (4) If the owner elects to retain the meliorations, he shall, at his option, either refund to the possessor the cost thereof or pay to him a sum corresponding to the enhanced value of the thing. Rights of possessor as to decorative expenses.