A tract house was built with a commercial-grade kitchen no buyer in the area will pay full cost for. What is a superadequacy?
Correct Answer
A) A feature whose cost exceeds the value it contributes
Why this is correct: Superadequacy is a type of functional obsolescence where a feature is overbuilt for the market, so its cost exceeds its contributory value. The commercial-grade kitchen in a tract house is a perfect example. Why the other choices are wrong: "Any feature that was added to the home after original construction" is wrong because additions are not inherently superadequate; they must be over-improvements. "A luxury feature in a luxury market" is wrong because in a luxury market, such a feature may be appropriate and not a superadequacy. "The premium quality of custom construction" is wrong because custom quality is not automatically a superadequacy; it depends on the market. Exam tip: Superadequacy = over-improvement. The cost > value added. Think 'gold-plated faucets in a starter home'.
Why This Is the Correct Answer
Option A is correct because a superadequacy is precisely a feature whose cost exceeds its contributory value. That definition captures why the concept exists: the cost approach must deduct the unrecoverable excess or it will overstate the property's worth. It also explains why market context is decisive, since contributory value is measured by what buyers in that market will actually pay. The commercial kitchen in a tract house illustrates the definition rather than expanding it.
Why the Other Options Are Wrong
Option B: Any feature that was added to the home after original construction
Timing has nothing to do with the classification, and a superadequacy can be built into the original construction just as easily as added later. Many overimprovements come from an original owner building to personal taste in a market that does not share it. Conversely, plenty of later additions are perfectly adequate and recover their cost in full.
Option C: A luxury feature in a luxury market
A luxury feature in a market that expects and pays for luxury is not a superadequacy at all, because its cost is recovered in the sale price. That is the ordinary case of a feature matching its market, which produces no obsolescence. The definition depends on the relationship between cost and contributory value, not on whether the feature is expensive.
Option D: The premium quality of custom construction
High-quality custom construction is a quality rating rather than a form of depreciation, and it is captured in the quality classification and cost estimate. Quality becomes a superadequacy only when the market will not reimburse the spending, which is a separate finding requiring evidence. Equating premium construction with obsolescence would penalize every well-built home.
Cost out, value short
Superadequacy is a receipt bigger than the reimbursement. Compare what was spent against what the market pays back, and only the shortfall is obsolescence.
How to use: On definition questions, test each option against the cost-versus-contribution comparison. Options about timing, price level, or build quality are describing something else.
Exam Tip
Always ask which market. The identical feature can be a superadequacy in one neighborhood and a market expectation in another a mile away.
Common Mistakes to Avoid
- -Treating any expensive feature as a superadequacy without market evidence
- -Assuming only later additions can be superadequate
- -Deducting the full cost when the feature retains partial contributory value
- -Double-counting by taking both physical depreciation and the entire excess cost on one component
Concept Deep Dive
Analysis
This tests the definition of superadequacy stripped of any particular fact pattern. A superadequacy is a component whose cost exceeds the value it contributes, and it is classified as a form of functional obsolescence because the mismatch lies in the improvement's design relative to what its market wants. The reference point is always the market for the property type in that location, which is why the same commercial-grade kitchen could be an ordinary expectation in a custom estate market and a clear superadequacy in a tract subdivision. Quality by itself is never the issue; the gap between dollars spent and dollars recovered is. In the cost approach the excess cost must be deducted so the approach does not overstate value, and the deduction should be taken net of physical depreciation already charged to the same component. Whether it is curable depends on whether removing or modifying the feature would add more value than it costs, which is usually not the case.
Background Knowledge
You need the classification of depreciation into physical deterioration, functional obsolescence, and external obsolescence, with functional obsolescence dividing into deficiencies and superadequacies, each curable or incurable. You also need the principle that cost equals value only at highest and best use, and the practice of measuring contributory value from market evidence such as paired sales.
Real-World Application
A tract home has a $70,000 professional kitchen. Paired sales show buyers in the subdivision pay about $20,000 more for an upgraded kitchen, so you include the full cost in cost new and deduct roughly $50,000 as superadequacy, keeping the cost approach aligned with the sales comparison indication.
More Cost Approach Questions
In a cost approach for a proposed building, the appropriate cost basis is generally:
A warehouse cost $210,000 to build when the cost index stood at 105. The index is now 210. Its indicated current cost is:
The age-life method expresses depreciation as:
Market extraction of depreciation is limited by the fact that it:
Functional obsolescence caused by a deficiency is measured as curable when:
Curable physical deterioration is measured at cost to cure because:
A 2,050 sq ft dwelling is priced at $178 per square foot with a $34,000 detached garage and $21,500 of site improvements. Cost new is:
A house has three bedrooms sharing one bathroom, and adding a second bath is economically justified. This is:
Direct costs in a construction budget include:
An appraiser writes that a 40-year-old house has an effective age of 10 but describes original wiring, original kitchen and a 25-year-old roof. The report's problem is:
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