1. A non-transitory storage device storing a program to cause a computing system having a processor to perform a method for generating a display relating to a named geographic area, the method comprising: for each of substantially all of the homes in the named geographical area, accessing an estimated current value attributed to the home based on automatically comparing the attributes of the home to attributes of homes recently sold in the named geographic area using each of a plurality of classification trees among a forest of classification trees, each classification tree of the forest classifying a plurality of homes and their recent selling prices based on values for the homes of the plurality of a random subset of home attributes; with the processor, applying an aggregation function to the accessed estimated current values to obtain an aggregation result; and causing to be displayed a characterization of the current value of homes in the named geographic area that is based on the aggregation result.