An appraiser works from a data collector's sketch. What should be confirmed before relying on the area figure?
Correct Answer
C) That it was measured on a comparable basis
Why this is correct: For area figures to be comparable, they must be measured using the same standards (e.g., ANSI) as the comparable sales data. This ensures adjustments are based on consistent measurements. Why the other choices are wrong: "That the collector holds a surveying credential" is not required; the key is the measurement standard, not the credential. "That the sketch was drawn to a printed scale" addresses accuracy of the drawing, not the measurement convention used. "That the client accepts the sketch as accurate" does not ensure comparability with market data. Exam tip: Before using area data, verify the measurement standard (e.g., ANSI) matches that of your comparables.
Why This Is the Correct Answer
Option C is right because the area figure must have been measured on a basis comparable to the data it will be analyzed against. In residential work that usually means confirming the collector followed the same standard the appraiser applies to the comparables, and reporting which standard was used. Where the bases differ, the appraiser either reconciles them or remeasures rather than mixing them. The scope of work disclosure should also state that the area came from a third-party data collection and what was done to verify it.
Why the Other Options Are Wrong
Option A: That the collector holds a surveying credential
A surveying credential establishes competence for boundary and topographic work, which is not what a floor area sketch is. Plenty of accurate residential measurements are taken by people who are not surveyors, and a surveyor unfamiliar with the applicable area standard could produce a figure that is precise and still not comparable. The credential does not answer the question the appraiser needs answered.
Option B: That the sketch was drawn to a printed scale
Drawing to scale affects how the sketch looks and how well dimensions can be read off it, but it says nothing about which spaces were counted. A perfectly scaled drawing that includes an unheated sunroom in finished area is still incomparable to data that excludes it. Presentation quality is not measurement convention.
Option D: That the client accepts the sketch as accurate
Client acceptance is not verification; a client generally has no basis for assessing measurement methodology and no role in the appraiser's data verification. Acceptance also cannot make an incomparable figure comparable to market data. The appraiser determines the scope of work necessary for credible results and remains responsible for the inputs regardless of what the client is willing to accept.
Same yardstick on both sides
An area figure is only ever used as a comparison, so both sides need the same yardstick. Before you accept anyone's sketch, ask what standard produced it and whether your comparables were measured that way. Different yardstick, useless comparison.
How to use: When a stem introduces third-party data, ask what would make the figure usable rather than what would make its source impressive. Choose the option about the measurement basis, and reject credentials, drawing quality, and client acceptance.
Exam Tip
The same consistency principle governs every unit of comparison - room counts, site area, and net rentable area all have competing conventions, and mixing them corrupts a grid the same way.
Common Mistakes to Avoid
- -Accepting a third-party area figure without confirming the measurement standard
- -Combining below-grade finished area into above-grade totals
- -Treating a credential or a tidy drawing as evidence of comparability
- -Omitting from the scope of work that a third party performed the data collection
Concept Deep Dive
Analysis
This question tests measurement consistency in an assignment where someone else did the measuring. Property data collection by a third party has become common, and the appraiser who relies on such a product still owns the analysis it feeds. Area figures are used comparatively - the subject's size is placed against the comparables' sizes, and a price-per-square-foot or a size adjustment is derived from that relationship. Comparison only works if both sides were measured the same way. Standards differ in real ways: whether below-grade finished area is combined with above-grade area, how sloped-ceiling space is counted, whether an attached but unheated sunroom is included, whether measurements are taken to exterior walls. A sketch produced under a different convention than the one behind the comparables introduces a systematic error that no amount of careful adjustment will remove, because the yardstick itself changed. The appraiser's obligation is to collect, verify, and analyze the information necessary for credible results, and verification here means confirming the measurement basis.
Background Knowledge
You need Standards Rule 1-4's requirement to collect, verify, and analyze the information necessary for credible assignment results, the SCOPE OF WORK RULE's disclosure obligations where a third party supplies data, and familiarity with the residential area standard in general use, including its treatment of ceiling height, finished area, and the separate reporting of above-grade and below-grade space. You should also know that the appraiser remains responsible for data supplied by others.
Real-World Application
An appraiser receiving a data collector's sketch confirms the collector was trained to the same area standard she uses, checks that below-grade finished space is reported separately rather than folded into the total, and states in the scope of work that the measurement came from a third-party collection and how it was verified.
More Emerging Methods Questions
How does an alternative inspection method affect the appraiser's disclosure obligations?
A collector's photographs show a condition the appraiser believes needs specialist assessment. What is the appropriate step?
What responsibility does an appraiser retain for an error originating in a third-party database?
Under current USPAP guidance, what is the output of an automated valuation model before an appraiser analyzes it?
Which assignment type still requires the appraiser to develop an opinion of value?
A model returns an estimate far from the appraiser's own conclusion. What is the appropriate response?
What does it mean that a tool cannot comply with USPAP?
An appraiser is asked to review an assignment where an AVM supplied the value. What does the review examine?
Why is the date a data extract was pulled worth recording in the workfile?
A desktop appraisal is best described as an assignment completed how?
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