When the value of any part of a property is measured by its effect on the value of the whole parcel, which principle of value is being applied?

The principle of change refers to the inevitable shifts in property values over time due to various factors such as economic conditions, demographics, and environmental influences. While change affects property values, it does not specifically address how individual components impact the value of the whole, making it an incorrect choice in this context.

Competition involves the market dynamics between similar properties and how their values are influenced by the presence of alternative options available to buyers. Although it affects pricing strategies in real estate, it does not relate directly to assessing the contribution of individual components to the overall value of a property.

Conformity suggests that a property’s value is maximized when it is similar to other properties in the area, maintaining a balance with surrounding properties. While conformity can influence market value, it does not specifically measure the impact of individual features on the overall property value, thereby making it an inappropriate answer for this question.