An appraiser is valuing an older single-purpose warehouse in an area where demand for that type of space has fallen. Market participants indicate that no one would build a replacement if it were destroyed, because a new one could not be sold for its cost. How does the principle of substitution bear on the cost approach here?
Correct Answer
D) The cost indicator has little relation to market value, since replacement is not feasible
The cost approach rests on substitution: a buyer pays no more than the cost of a satisfactory substitute. If no one would rebuild because rebuilding is not economically feasible, the cost of replacement does not represent market value. Option A applies the ceiling rule mechanically, Option B treats special-purpose design as overriding feasibility, and Option C forgets that substitution underlies all three approaches.
Why This Is the Correct Answer
Option D is correct because the cost approach assumes a buyer could build an equally useful substitute and would pay no more than its cost. When no owner would rebuild because a new building could not be sold for its cost, replacement cost does not represent market value, so the cost indicator has little relation to it.
Why the Other Options Are Wrong
Option A: Replacement cost sets the ceiling on value, so the cost indicator should control
Option A says replacement cost sets the ceiling, so the cost indicator should control. A ceiling is not the value itself, and here the market would not pay replacement cost at all, so letting the cost indicator control would overstate value.
Option B: Cost should get the most weight, because the building is a special-purpose property
Option B says cost should get the most weight because the building is special-purpose. Special-purpose design can make cost useful when the use is still viable, but here demand has fallen and rebuilding is not feasible, so cost does not reflect what the market would pay.
Option C: Substitution applies to sales comparison, so it does not bear on the cost approach
Option C says substitution applies to sales comparison and does not bear on the cost approach. Substitution is fundamental to the cost, sales comparison and income approaches; it is the very rationale of the cost approach.
No rebuild, no cost link
Cost tracks value only when someone would actually build the substitute. If nobody would rebuild, cost tells you little.
How to use: Use this when a question describes falling demand, obsolete property or infeasible construction and asks about the cost approach.
Exam Tip
When a stem says replacement would not be built, look for the answer that reduces reliance on the cost approach rather than one that treats cost as a firm value.
Common Mistakes to Avoid
- -Treating replacement cost as value when rebuilding is not feasible
- -Thinking substitution applies only to the sales comparison approach
- -Giving the cost approach the most weight because a property is special-purpose, without checking feasibility
Concept Deep Dive
Analysis
This question requires two steps: recognizing that the cost approach is grounded in substitution, and then seeing that substitution only links cost to value when a rational buyer would actually build the substitute. When replacement is not feasible, the link breaks and the cost indicator loses reliability.
Background Knowledge
Under the principle of substitution, a rational person pays no more for a property than the cost of acquiring a satisfactory substitute, assuming no costly delay. In the cost approach this means value can be estimated from the cost to build a property of equal utility, but only where building that substitute makes economic sense.
Real-World Application
An appraiser values an outdated distribution warehouse in a declining industrial area. Because no developer would build a similar warehouse there, she gives the cost approach little weight and relies on sales and income evidence.
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