59. When, following the expropriation of a part of an immovable or a group of adjacent immovables intended for or used as a joint undertaking, the remaining part acquires a particular increased value resulting from the construction of works or improvements carried out by the expropriating party, the increased value, to the extent thereof, is offset against the indemnity owing to the expropriated party.
1973, c. 38, s. 58; 1983, c. 21, s. 14.