(Part IV of IV) Analysts often apply the cost approach to value special-purpose property. And the measurement of economic obsolescence is an important but often controversial procedure in such cost approach analyses. Part one of this four-part series considered economic obsolescence concepts. Part two discussed the generally accepted measurement methods. Part three recommended responses to the most typical assessment authority objections to economic obsolescence measurements. This fourth part recommends best practices responses to other (but still common) assessor objections to economic obsolescence measurements. Introduction Valuation analysis (“analysts”) are often asked to value special-purpose industrial and commercial property. When analysts value…