Property ValuationIntermediateAlaska Exam

An Alaska appraiser notes that several properties in a neighborhood sold at significant discounts because of a nearby industrial odor. This is an example of value lost to:

AFunctional obsolescence, though specifics can vary by situation
BPhysical deterioration
CExternal obsolescence from a negative environmental influenceCorrect
DCurable depreciation

Why External obsolescence from a negative environmental influence Is Correct

Answer C: External obsolescence from a negative environmental influence

Industrial odors from a nearby facility represent a negative external factor that reduces the desirability and value of surrounding residential properties. This is external (economic) obsolescence — incurable depreciation caused by factors outside the subject property's control.

Exam Tip: Property Valuation

Valuation questions focus on the three approaches to value: sales comparison, cost, and income. Know which approach is best for which property type. The income approach uses cap rate and NOI — memorize these formulas.

Key Property Valuation Terms in This Question

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