An over-built custom home has heating bills double the neighborhood norm because of its cathedral volumes. Beyond excess construction cost, its superadequacy also creates:
Correct Answer
D) Ongoing excess operating costs the market may capitalize
Why this is correct: Superadequacy (excess construction) creates functional obsolescence via two penalties: the market ignores the extra construction cost, and the oversized feature incurs higher ongoing operating costs (like heating). The market may capitalize these excess costs into a value penalty. Why the other choices are wrong: "A physical deterioration deduction" is for wear and tear, not design flaws. "An external obsolescence claim" is caused by external factors. "A site value premium recognizing the extra interior volume" is backwards; superadequacy reduces value, it doesn't add a premium. Exam tip: Superadequacy hurts twice: wasted construction cost + ongoing excess operating expense.
Why This Is the Correct Answer
Ongoing excess operating costs that the market may capitalize is the second half of the superadequacy penalty and the part the stem is pointing at when it says beyond excess construction cost. The measurement follows directly: estimate the annual expense in excess of what a typically designed competitor incurs, and capitalize it at an appropriate rate to express it as a value deduction. Both penalties belong in the analysis, the unrecovered capital cost and the capitalized excess operating cost, though care is needed not to double count if the sales comparison or income evidence already reflects one of them. The classification remains functional obsolescence throughout, since the cause is the improvement's own design.
Why the Other Options Are Wrong
Option A: A physical deterioration deduction
Physical deterioration measures loss in value from wear, tear, decay, and the action of the elements, none of which is at work here. A brand new superadequate feature suffers the penalty on the day it is finished, before any deterioration has occurred. The option assigns the loss to the wrong category of depreciation.
Option B: An external obsolescence claim
External obsolescence arises from influences outside the property boundaries, such as a change in the neighborhood, adverse zoning, or a market downturn, and it is generally incurable because the owner does not control the cause. A design choice made by the owner within the property line is functional, not external. Sorting depreciation by where the cause lives disposes of this option.
Option C: A site value premium recognizing the extra interior volume
Superadequacy reduces value rather than adding a premium, and interior volume is an attribute of the improvement rather than of the site, so it could not create a site value premium in any event. The option inverts the sign of the effect. Where a feature genuinely does add value in the market, it is not a superadequacy by definition.
Pays Twice For Too Much
A superadequacy charges the owner at the register and then every month afterward. The register charge is the construction cost the market ignores; the monthly charge is the heating bill for volume nobody asked for. Capitalize the monthly one to see what it costs in value.
How to use: When a stem describes a feature exceeding market standards, look for both penalties before answering. Ask what was spent that will not be recovered and what continues to be spent every year. Choose the option naming the recurring operating cost when the stem has already accounted for the construction cost.
Exam Tip
Classify depreciation by cause and location: wear is physical, design is functional, and anything outside the property line is external. Superadequacy is always functional.
Common Mistakes to Avoid
- -Counting only the unrecovered construction cost and ignoring the recurring operating penalty
- -Classifying a design-caused loss as physical deterioration or external obsolescence
- -Double counting by deducting a capitalized operating penalty already reflected in market sales evidence
Concept Deep Dive
Analysis
This item tests the two distinct penalties a superadequacy imposes. A superadequacy is a component that exceeds market requirements, and it is a form of functional obsolescence caused by an excess rather than a deficiency. The first penalty is on the capital side: the owner spent more to build the feature than the market will pay for it, so the excess cost is not recovered and shows up as a deduction from cost new. The second penalty is on the operating side and is easy to overlook: an oversized or over-specified component often costs more to run, maintain, insure, or eventually replace, and those recurring costs continue for as long as the feature exists. Cathedral volumes are the standard example, since the extra cubic footage must be heated and cooled every year. A market that recognizes the higher operating cost will pay less for the property, and the value penalty for that recurring cost is estimated by capitalizing the excess expense.
Background Knowledge
You need the three categories of depreciation, physical deterioration, functional obsolescence, and external obsolescence, and the ability to classify a loss by the location and nature of its cause. You should know that functional obsolescence includes both deficiencies and superadequacies, and that each may be curable or incurable depending on whether the cost to cure is recovered in value. You also need the measurement techniques, including capitalizing an excess operating expense to express a recurring penalty as a lump sum, and the caution against double counting a penalty already reflected in market-derived evidence.
Real-World Application
Appraising a custom home with two-story great room volumes in a market of conventional ceiling heights, the appraiser finds heating costs roughly double the neighborhood norm. The report treats the excess construction cost as unrecovered and estimates the annual heating expense above a typical competitor, capitalizing it to express the recurring penalty, while checking that the paired sales evidence has not already captured the same loss.
More Cost Approach Questions
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Market extraction of depreciation is limited by the fact that it:
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Curable physical deterioration is measured at cost to cure because:
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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: