In the event that a local authority, a group of local authorities or another public entity entrusts the study and implementation of a development project to a local semi-public company under a development concession provided for in Article L. 300-4 du Code de l’urbanisme, the concession agreement is drawn up in accordance with the provisions of articles L. 300-4 to L. 300-5-2 of the same code; however, when the contracting public entity does not participate in the cost of the operation, the second, third and last paragraphs of this article do not apply.