The guarantee may be provided in full or in part in money, annuities, securities admitted to trading on a regulated market, or by a first mortgage on immovable property with a value double the sum guaranteed. It may also be provided in full by one of the credit institutions or finance companies authorised for this purpose or one of the institutions or establishments mentioned in article L. 518-1 of the Monetary and Financial Code.
If the guarantee is represented by a mortgage, the value of the properties is estimated by the departmental or, where applicable, regional director of public finance on the basis established for the collection of transfer duties in the event of death.
To preserve this guarantee, an entry is made, in the interest of third parties, at the behest and in the name of the departmental or, where applicable, regional director of public finance.