The authorisation of the acts mentioned in 2° of Article R. 712-7 is valid for a period of one year from the date of approval of the deliberations relating to these acts. At the end of this period, if the loan, lease or bond issue has not been contracted or raised, the authorisation must be renewed. However, where the loan relates to a port or airport concession, the deadline is extended to 31 December of the second year following the year of approval.
The authorisation may provide for the loan to be drawn down over more than one year, in successive instalments, where the works are to be carried out in stages.