Which of the following would be classified as functional obsolescence?
Correct Answer
B) A house with only one bathroom in a market where two bathrooms are standard
Functional obsolescence results from a deficiency or superadequacy in design, layout, or features compared to current market standards. Having only one bathroom when the market expects two is functional obsolescence due to inadequacy.
Why This Is the Correct Answer
Option B represents functional obsolescence because having only one bathroom when the market standard expects two bathrooms creates a functional inadequacy. This deficiency makes the property less desirable and functional compared to competing properties that meet current market expectations. The inadequacy is built into the design/layout of the house and would require significant renovation to correct. This directly impacts the property's marketability and value due to not meeting contemporary functional standards.
Why the Other Options Are Wrong
Option A: A cracked foundation
A cracked foundation is physical deterioration (physical depreciation), not functional obsolescence. This represents actual physical damage or wear to the structure that affects its condition and integrity, but doesn't relate to design inadequacy or outdated features.
Option C: Declining property values due to a nearby landfill
Declining property values due to a nearby landfill represents external obsolescence (economic obsolescence). This is caused by factors outside the property boundaries that negatively impact value, such as environmental hazards, noise, or undesirable neighboring land uses.
Option D: Worn carpeting throughout the house
Worn carpeting is physical deterioration (physical depreciation) resulting from normal wear and tear over time. This represents the physical wearing out of materials and components, not a design deficiency or functional inadequacy compared to market standards.
The FUN-ctional Design Test
Remember 'FUN-ctional' - if it's NOT FUN to use the property because of poor design, layout, or inadequate features compared to what buyers expect today, it's functional obsolescence. Think: 'Function follows form' - if the form (design) doesn't function well for modern needs, it's functional obsolescence.
How to use: When you see answer choices, ask yourself: 'Is this a design/layout/feature problem that makes the property less functional compared to current market expectations?' If yes, and it's not physical damage or external factors, choose functional obsolescence.
Exam Tip
Quickly categorize each answer choice as Physical (P), Functional (F), or External (E) obsolescence. Look for keywords: Physical = damage, wear, deterioration; Functional = inadequate, outdated design, too few/many of something; External = neighborhood, outside influences.
Common Mistakes to Avoid
- -Confusing physical deterioration with functional obsolescence - remember physical is about condition, functional is about design adequacy
- -Mixing up functional and external obsolescence - functional comes from within the property, external comes from outside factors
- -Thinking all old features are functional obsolescence - they must be inadequate by current market standards, not just old
Concept Deep Dive
Analysis
Functional obsolescence is one of the three types of depreciation in real estate appraisal, representing a loss in value due to inadequate, outdated, or excessive design features relative to current market standards. It occurs when a property's design, layout, or features no longer meet the expectations or needs of typical buyers in the current market. This type of obsolescence is internal to the property itself and relates to how well the property functions for its intended use. Unlike physical deterioration, functional obsolescence deals with design deficiencies rather than wear and tear, and unlike external obsolescence, it's caused by factors within the property boundaries.
Background Knowledge
Appraisers must understand the three types of depreciation: physical deterioration (wear and tear), functional obsolescence (design deficiencies), and external obsolescence (outside negative influences). Functional obsolescence can be either curable (economically feasible to fix) or incurable (too expensive to correct relative to the value added).
Real-World Application
When appraising older homes, appraisers frequently encounter functional obsolescence such as galley kitchens (when open concepts are preferred), insufficient electrical outlets, narrow hallways, or inadequate storage. These require adjustments in the cost approach and influence comparability in the sales comparison approach.
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