It must be in writing, can be signed privately by the parties, or in front of a lawyer, but in order to give it maximum legal validity, it must be authorized by court – preferably the family court, or the rabbinical court. Before the court can authorize the agreement under the 1973 Spouses’ Property Relations Act , it must ask both parties ,who must be present in court, if they signed the agreement of their own free will, with an understanding of its contents and implications– and it must be satisfied by their answers that this is so. Only afterwards will it authorize the agreement, and give a judgment doing so. This is recorded in the protocol of the judgment and the agreement receives an appropriate court stamp and is attached to it.
This requirement holds whether the property agreement is made by a couple before they marry, a cohabiting couple, or a married couple.