Externalities in appraisal refer to:
Correct Answer
D) Off-site influences that affect a property's value
External influences arise beyond the subject and can affect utility and market value positively or negatively. A highway or park can have benefits and adverse effects depending on access, noise, use and buyer reaction. Site improvements alone are not the same as an external influence.
Why This Is the Correct Answer
Option D is correct because externalities are activities or land uses outside a property, over which its owner has very limited or no control, that can have positive or negative effects on its value.
Why the Other Options Are Wrong
Option A: Legal restrictions recorded against the title
Option A, legal restrictions recorded against the title, is wrong because recorded restrictions are part of the property's legal rights, not off-site influences.
Option B: Costs incurred outside the appraisal's fee budget
Option B, costs incurred outside the appraisal's fee budget, is wrong because externalities describe influences on property value, not the appraiser's expenses.
Option C: Physical features located outside the building
Option C, physical features located outside the building, is wrong because site improvements such as patios or driveways are part of the property, not external influences.
External means beyond the owner
An externality comes from outside the property line and beyond the owner's control, and can push value up or down.
How to use: Use this to separate external influences from features that are part of the property.
Exam Tip
Remember that externalities can be positive as well as negative.
Common Mistakes to Avoid
- -Treating externalities as negative only
- -Calling site improvements external influences
- -Confusing externalities with recorded title restrictions
Concept Deep Dive
Analysis
This question tests the principle of externalities. It concerns influences arising outside the property, over which the owner has little or no control, that can raise or lower value. The distractors confuse external with recorded title matters, fees or outdoor building features.
Background Knowledge
Externalities can be positive, such as a nearby park, or negative, such as heavy traffic noise; some features, like a highway, can have both effects. They help explain external obsolescence, which is a loss in value from causes outside the property.
Real-World Application
A new park opens across the street from a row of homes. The appraiser compares sales before and after to see whether buyers are paying a premium for the view and access.
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