When rescission is granted for lesion the seller must take back the immovable in the state it is at that time. The buyer is not liable to the seller for any deterioration or loss sustained by the immovable before the demand for rescission was made, unless the deterioration or loss was turned into profit for the buyer.
The seller must reimburse the buyer for the expenses of the sale and for those incurred for the improvement of the immovable, even if the improvement was made solely for the convenience of the buyer.
La. C.C. § 2597