External obsolescence is characterized by:
Correct Answer
A) Loss in value from factors outside the boundaries
Why this is correct: External obsolescence (economic obsolescence) is a loss in value caused by negative influences outside the property's boundaries, such as noise, odor, or neighborhood decline. It is generally incurable by the property owner. Why the other choices are wrong: "Physical deterioration of the building components" describes physical depreciation. "Outdated floor plans or other design features" describes functional obsolescence. "Being generally curable by the property's owner" is false; external obsolescence is typically incurable. Exam tip: External = outside. If the problem is off-site and you can't fix it, it's external obsolescence.
Why This Is the Correct Answer
Option B correctly defines external obsolescence as loss in value due to factors outside the property boundaries that affect desirability. This captures the essential characteristics: the source is external to the property, it causes a measurable loss in value, and it impacts the property's desirability in the marketplace. Examples include proximity to landfills, airports, industrial facilities, or economic decline in the neighborhood. The definition emphasizes that these factors are beyond the property boundaries, which is the fundamental distinction of external obsolescence.
Why the Other Options Are Wrong
The EXternal EXit Strategy
Remember 'EX-ternal = EX-it the property' - you have to leave (exit) your property boundaries to find the source of the problem. Think 'External = Exit + Uncontrollable' - the owner must exit their property to address the issue, but typically cannot control or cure it.
How to use: When you see a question about obsolescence types, ask yourself: 'Do I need to exit the property boundaries to find the problem?' If yes, it's external obsolescence. If the problem is within the property (like old carpet or poor layout), it's either physical or functional.
Exam Tip
Look for keywords indicating location or source of the problem. External obsolescence questions often mention 'nearby,' 'adjacent,' 'neighborhood,' or 'area' factors, while internal issues mention specific building components or design features.
Common Mistakes to Avoid
- -Confusing external obsolescence with functional obsolescence when the problem involves outdated features
- -Thinking external obsolescence can be cured by property improvements
- -Misidentifying physical deterioration as external obsolescence when the issue is building-related
Concept Deep Dive
Analysis
External obsolescence is one of the three main types of depreciation in real estate appraisal, alongside physical deterioration and functional obsolescence. It represents a loss in property value caused by negative influences that originate outside the property boundaries and are beyond the property owner's control. This type of obsolescence is also known as economic obsolescence or locational obsolescence. Unlike other forms of depreciation, external obsolescence typically cannot be cured by the property owner through repairs, renovations, or modifications to the subject property itself. The key distinguishing factor is that the negative influence comes from external sources such as environmental factors, economic conditions, or land use changes in the surrounding area.
Background Knowledge
Appraisers must understand the three types of depreciation: physical deterioration (wear and tear), functional obsolescence (outdated design/features), and external obsolescence (negative external influences). Each type affects property value differently and has different characteristics regarding curability and responsibility for correction.
Real-World Application
An appraiser evaluating a home near a newly constructed highway would need to account for external obsolescence due to increased noise and reduced desirability. The homeowner cannot cure this by improving their property - the highway noise will persist regardless of interior renovations or landscaping efforts.
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In the cost approach, economic obsolescence is characterized as:
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An appraiser is valuing a property that generates $8,000 per month in gross rent. Recent sales of similar properties show gross rent multipliers ranging from 110 to 130. What is the indicated value range using GRM analysis?
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A property's replacement cost new is estimated at $450,000. Physical depreciation is $45,000, functional obsolescence is $25,000, and external obsolescence is $15,000. If the land value is $125,000, what is the indicated value by the cost approach?