Guys, I need some info. I am doing research on residential depreciation. I am looking for a book or something that will explain depreciation a bit more fully. I understand the term and the different kinds there are. Homes are depreciated according to effective age or physical condition. I am looking for information that would show, for example, that a house at 70% typically has a bad roof, bad trim, at 50% the house is not livable but repairable, at 30% the house is basically a shell in need of a complete remodel. I hope I am making this clear, I apoligize if I am not. The chart should have something to back up what loss is incurred at certain stages of depreciation. I am doing some research and would like your help. Any books or references that you may have would be appreciated. Thanks!