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What separates an extraordinary assumption from a hypothetical condition?

Correct Answer

B) Uncertain information versus a premise contrary to known facts

Distinguish uncertain effective-date information that could affect conclusions if false from a premise contrary to known effective-date facts. These are extraordinary assumptions and hypothetical conditions respectively; neither label alone establishes acceptable use or adequate reporting.

Answer Options
A
They are interchangeable labels for any premise in an assignment
B
Uncertain information versus a premise contrary to known facts
C
Both describe facts that have been verified as true
D
Neither has anything to do with the effective date of the value

Why This Is the Correct Answer

Option B is correct because USPAP defines an extraordinary assumption as an assumption about uncertain information that, if false, could alter the conclusions. A hypothetical condition is contrary to what the appraiser knows exists on the effective date. Uncertainty versus known contrary facts is the dividing line.

Why the Other Options Are Wrong

Option A: They are interchangeable labels for any premise in an assignment

Option A is wrong because the two are not interchangeable labels for any premise. They have separate definitions based on whether the information is uncertain or known to be contrary to fact.

Option C: Both describe facts that have been verified as true

Option C is wrong because neither describes facts verified as true. An extraordinary assumption involves uncertain information, and a hypothetical condition is contrary to known facts.

Option D: Neither has anything to do with the effective date of the value

Option D is wrong because both concepts are tied to the effective date. Each definition refers to what is uncertain or known as of the effective date.

Unsure versus untrue

Extraordinary assumption: unsure if it is true. Hypothetical condition: known to be untrue on the effective date.

How to use: Use this pair whenever you must classify a premise.

Exam Tip

Look for the words uncertain or contrary to known facts; they map to the two terms.

Common Mistakes to Avoid

  • -Swapping the two definitions
  • -Ignoring the effective date when classifying
  • -Thinking either label alone makes use acceptable

Concept Deep Dive

Analysis

This question tests the distinction between an extraordinary assumption and a hypothetical condition. The deciding factor is what the appraiser knows as of the effective date. Uncertain information supports an extraordinary assumption, while a premise contrary to known facts is a hypothetical condition.

Background Knowledge

Both extraordinary assumptions and hypothetical conditions are assignment conditions that can affect value. Each may be used only when its SR 1-2 conditions are met, and each must be clearly disclosed with a statement that it might have affected results. The effective date determines which label fits.

Real-World Application

An appraiser cannot confirm whether a well meets water-quality standards and assumes it does, which is an extraordinary assumption. On another job, the appraiser values a vacant lot as if a house already stands on it today, which is a hypothetical condition. Both reports disclose the premise and that it might have affected results.

extraordinary assumptionhypothetical conditionuncertain informationcontrary to facteffective date
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