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Standards Rule 1-1 requires an appraiser to avoid:

Correct Answer

B) A substantial error of omission or commission affecting the result

Why this is correct: Standards Rule 1-1(a) requires an appraiser to be competent and avoid errors that would significantly affect the appraisal's credibility. A 'substantial error of omission or commission' is a direct violation of this core competency rule. Why the other choices are wrong: 'Using more than three comparable sales in any grid' is wrong; there is no USPAP limit on the number of comparables. 'Consulting any published cost service during the analysis phase' is wrong; using cost services is a recognized method and is permitted. 'Developing more than one approach to value' is wrong; SR 1-4 may require only one approach for credible results. Exam tip: SR 1-1 is the foundation—it's about competence and avoiding significant errors.

Answer Options
A
Using more than three comparable sales in any grid
B
A substantial error of omission or commission affecting the result
C
Consulting any published cost service during the analysis phase
D
Developing more than one approach to value

Why This Is the Correct Answer

Why this is correct: Standards Rule 1-1(a) requires an appraiser to be competent and avoid errors that would significantly affect the appraisal's credibility. A 'substantial error of omission or commission' is a direct violation of this core competency rule. Why the other choices are wrong: 'Using more than three comparable sales in any grid' is wrong; there is no USPAP limit on the number of comparables. 'Consulting any published cost service during the analysis phase' is wrong; using cost services is a recognized method and is permitted. 'Developing more than one approach to value' is wrong; SR 1-4 may require only one approach for credible results. Exam tip: SR 1-1 is the foundation—it's about competence and avoiding significant errors.

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