Property taxes in Mexico are called predial and are paid annually.  The earliest in the year the better in order to receive a discount and to avoid penalties.  The property taxes in Mexico are extremely low for example  122 sq.m. condo located in Bucerias, Nayarit will have property taxes equivalent to $60 cad.
http://www.buceriasrealestatesite.com/Bucerias/Jalisco/Condos/35730/Playa_de_Huanacaxtle/Agent/Listing_71464167.html
Property taxes represents .06% of the assessed 
value for private residences.  The assessed value is determined at the time of 
the sale.