A specific environmental uncertainty could affect the value opinion. The appraiser cannot verify it and proposes to assume the site is uncontaminated. Is disclosure of that assumption alone sufficient?
Correct Answer
C) No; the assumption must also have a reasonable basis and meet the applicable credible-development requirements
An extraordinary assumption is not permission to guess. Determine whether the premise has a reasonable basis, is required to develop credible opinions and conclusions, and produces credible analysis under SR 1-2(f), subject to any additional applicable conditions. Obtain qualified information or modify/decline the assignment when necessary. Report assumptions and limitations as required; ordinary assumptions are not categorically exempt from accurate disclosure under SR 2-1(c).
Why This Is the Correct Answer
Option C is correct because USPAP permits an extraordinary assumption only when it is required to properly develop credible opinions and conclusions and the appraiser has a reasonable basis for it, along with the other applicable conditions. Disclosure alone does not satisfy those requirements. If those conditions cannot be met, the appraiser should obtain qualified information or modify or decline the assignment.
Why the Other Options Are Wrong
Option A: Yes, no further basis is needed whenever contamination is unconfirmed and the assumption is clearly disclosed
Option A says no further basis is needed whenever contamination is unconfirmed and the assumption is disclosed. That turns an extraordinary assumption into permission to guess, while USPAP also requires a reasonable basis and that the assumption be needed for credible results.
Option B: Yes, ordinary assumptions do not require disclosure or any reasonable basis
Option B says ordinary assumptions need no disclosure or reasonable basis. This is wrong on both points: assumptions are not exempt from accurate disclosure, and a premise affecting value still needs a reasonable basis.
Option D: No; an environmental uncertainty is treated as a hypothetical condition
Option D says an environmental uncertainty is treated as a hypothetical condition. A hypothetical condition is contrary to what is known to exist; here the site's condition is uncertain, which fits an extraordinary assumption, not a hypothetical condition.
Needed, reasonable, credible, disclosed
An extraordinary assumption must be needed, have a reasonable basis, produce a credible analysis, and be disclosed. Disclosure is only the last of these.
How to use: Use this checklist when a question asks if disclosing an assumption is enough.
Exam Tip
Separate uncertain facts (extraordinary assumption) from facts known to be false (hypothetical condition) before choosing an answer.
Common Mistakes to Avoid
- -Believing clear disclosure alone justifies any assumption
- -Confusing an extraordinary assumption with a hypothetical condition
- -Thinking ordinary assumptions are exempt from disclosure
Concept Deep Dive
Analysis
This question tests the conditions for using an extraordinary assumption. Disclosure is necessary but is not enough by itself; the assumption must also be required for credible opinions and have a reasonable basis. The reasoning step is to recognize that an assumption cannot be used simply because a fact is unknown.
Background Knowledge
An extraordinary assumption is an assignment-specific assumption about uncertain information that, if found false, could alter the appraiser's opinions or conclusions. USPAP allows its use only when it is required for credible results, has a reasonable basis, results in a credible analysis, and the appraiser complies with the disclosure requirements. A hypothetical condition, by contrast, is a condition known to be contrary to fact but assumed for the purpose of analysis.
Real-World Application
A residential lot sits next to a former gas station, and the appraiser cannot verify whether contamination spread. She asks the client for an environmental report and uses an extraordinary assumption only once she has a reasonable basis, disclosing it clearly in the report.
More USPAP Questions
In a cost approach for an improved property, an appraiser estimates site value by sales comparison, allocation and extraction, then settles on one site-value figure before final reconciliation. How is this step best described?
An extraordinary assumption was reasonably supported, properly used and disclosed in an appraisal report. Later, the assumed information is found to be false. Which conclusion is best supported?
An otherwise applicable valuation approach cannot be developed reliably from the available data. The remaining scope can produce credible assignment results. What should the appraiser do?
May an appraiser use a hypothetical condition in any assignment?
An appraisal has a current effective date and permits an extraordinary assumption if its requirements are met. Which situation involves uncertain information rather than a fact known to be contrary to reality on that date?
Why must a report identify any real property interest that is being excluded from the value opinion?
Which review best helps explain divergent cost, sales-comparison and income indications?
Two value indications are $340,000 and $392,000. What is the difference as a percentage of the lower indication, rounded to one decimal place?
An unauthorized third party requests a lender-client’s report. No due-process or other permitted disclosure exception applies. How should the appraiser respond?
An appraiser proposes to assume there are no hidden defects. Which fact would characterize that assumption as extraordinary under the USPAP 2024 definition, rather than justify dismissing it as routine boilerplate?
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