In case of foreigners who own the property through a fideicomiso – no. In case of Mexicans, Sinaloa and Sonora have a relatively new law that states that regardless of the way that a couple is married (with or without a prenap), if one spouse is on the deed and the other is not, forcefully both spouses have to co-sign the deed. If the spouse, who is not on the deed refuses to sign, the spouse who is on the deed has to obtain a court permit allowing him/her to sell the property without the authorization of the other spouse. The spouse can sign through a legal representative if it is more convenient.