One appraisal principle of value is based on the concept that the more a property or its components are in harmony with the surrounding properties or components, the greater the contributory value. In other words, the more the properties are alike, the more they retain value. This is known as:

a. Substitution.
b. Regression and progression.
c. Conformity.
d. Competition.

Conformity

Explanation:

Conformity is an appraisal principle which states that the accurate value of a property tends to be created and then prolonged in a situation where the various features of the property meets up with the different demands of the market.

The basic principle of conformity describes how a particular property is suitable to be located in its surrounding. This is the main reason why different houses are built in the same pattern as the other houses situated in the area. This therefore increases the value of the property.

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