Article R2213-1 of the French Public procurement code
For the calculation of the contractor’s remuneration, the partnership contract specifies the conditions under which the following are taken into account and identified:1° Investment costs, in particular study and design costs, construction costs, ancillary construction costs and interim financial costs;2° Operating costs, in particular the costs of upkeep, maintenance and renewal of works and equipment;3° Financing costs;4° Where applicable, income from ancillary activities or from the development of the estate.