Why the spouse who is not the owner and who is married under the regime of community of property and without a marriage contract, must intervene and sign the deed of sale?

When the seller and his non-owner spouse are married under the regime of community of property, that is to say before July 1st, 1970 and without a marriage contract, the non-owner spouse enjoys an undivided right of ownership in the real estate property. The matrimonial regime of community of property also provides for the existence of various categories of property:

• the community property,
• the reserved property,
• the private property.

The intervention of the non-owner spouse assures the new purchaser that all the rights which the latter holds or could hold will be transferred to him by reason of this intervention.