In property appraisal, what is functional obsolescence?

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Functional obsolescence refers to the loss in value of a property due to changes in design, technology, or operational structure that make the property less desirable or less efficient compared to newer alternatives. It occurs when the property no longer meets the expectations or needs of current users because it may lack modern features or efficient designs that are commonplace in newer constructions.

For example, a home with a design that does not accommodate modern open-floor plans, or commercial property with outdated technology and utilities, would be considered to have functional obsolescence. This loss in value is not necessarily tied to external market conditions but rather stems from the property's intrinsic characteristics and their relevance in today's environment.

In contrast, the other concepts mentioned address different forms of value reduction: market conditions relate to external economic environments, depreciation due to wear and tear focuses on the physical deterioration of the property, and external environmental factors involve influences outside the property itself, such as neighborhood decline or changes in zoning laws. Understanding these distinctions helps in accurately assessing property value and identifying the causes of value loss effectively.