A single-family residence has only one bathroom for a four-bedroom home. This represents:
Correct Answer
B) Functional obsolescence
Why this is correct: Functional obsolescence is a loss in value due to design flaws that reduce utility or marketability. A four-bedroom home with only one bathroom is a deficiency compared to market expectations, making it functionally obsolete. Why the other choices are wrong: External obsolescence is from outside factors like location. Physical deterioration is wear and tear. Economic obsolescence is from external economic forces. Exam tip: Functional obsolescence is internal design flaws; think 'layout, features, adequacy.'
Why This Is the Correct Answer
Why this is correct: Functional obsolescence is a loss in value due to design flaws that reduce utility or marketability. A four-bedroom home with only one bathroom is a deficiency compared to market expectations, making it functionally obsolete. Why the other choices are wrong: External obsolescence is from outside factors like location. Physical deterioration is wear and tear. Economic obsolescence is from external economic forces. Exam tip: Functional obsolescence is internal design flaws; think 'layout, features, adequacy.'
Why the Other Options Are Wrong
The FED Classification System
F.E.D. - Function (internal design problems), External (outside forces), Deterioration (physical wear). Think 'The property is FED up with problems' - Function problems are inside the house, External problems are outside the property, Deterioration is physical damage you can see and touch.
How to use: When you see a property deficiency question, ask yourself: Is this a Function problem (design/layout), External problem (neighborhood/outside forces), or Deterioration (physical wear)? The bathroom shortage is clearly a Function problem since it's about inadequate design for the home's size.
Exam Tip
Look for keywords that indicate the source of the problem - if it mentions design, layout, or adequacy relative to current standards, think functional obsolescence. If it mentions wear, damage, or age-related issues, think physical deterioration. If it mentions neighborhood or external factors, think external obsolescence.
Common Mistakes to Avoid
- -Confusing functional obsolescence with physical deterioration when the issue involves outdated but functioning components
- -Thinking external obsolescence applies to any problem that reduces value, rather than specifically external factors
- -Assuming that because something is old or outdated, it automatically represents physical deterioration rather than functional obsolescence
Concept Deep Dive
Analysis
This question tests understanding of the three types of obsolescence in real estate appraisal: functional, external, and physical deterioration. Functional obsolescence occurs when a property has design deficiencies, outdated features, or inadequate amenities that reduce its utility compared to current market standards. The key is recognizing that the problem stems from the property's design or layout, not from external forces or physical wear and tear. A four-bedroom home with only one bathroom represents a clear mismatch between the number of bedrooms and expected bathroom facilities in today's market.
Background Knowledge
Appraisers must distinguish between three types of depreciation: physical deterioration (wear and tear), functional obsolescence (design deficiencies), and external obsolescence (outside negative influences). Understanding these categories is crucial for accurate property valuation and determining appropriate adjustment amounts in the sales comparison approach.
Real-World Application
In practice, appraisers encounter functional obsolescence regularly when comparing older homes to newer construction. A 1950s four-bedroom ranch with one bathroom would require significant functional obsolescence adjustments when compared to modern four-bedroom homes with 2-3 bathrooms. This directly impacts the property's marketability and value.
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