Property tax is paid down here based on property (lot) size and construction size. Property value also affects whether you pay other high-income taxes or not. So by not declaring their swimming pools, people in high-income gated communities were able to stay in a lower tax bracket.
In any case, this small initial step in 2007 gave the state budget 5M Argentine pesos (1.2 M USD). Not bad for a $400 initial investment in the Google Earth Pro license. The taxman has since moved to using other regularly updated satellite imagery.
FC