Final answer:
If a subject property and a comparable property are equal, no adjustment is necessary in real estate appraisal.
Step-by-step explanation:
If a subject property and a comparable property are equal, no adjustment is necessary. In real estate appraisal, comparable properties are used to determine the value of a subject property by comparing their characteristics and making adjustments for any differences between them. However, if the subject property and a comparable property have the same characteristics, there is no need for adjustments since they are already equal.