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Economic (External) Obsolescence

(1) A cause of depreciation that is a loss in value as a result of impairment in utility and desirability caused by factors outside the property’s boundaries. (2) Loss in value of a property (relative to the cost of replacing it with a property of equal utility) that stems from factors external to the property. For example, a buggy-whip factory, to the extent that it could not be used economically for anything else, suffered substantial economic obsolescence when automobiles replaced horse-drawn buggies.