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Sales ComparisonEASY16.4% of exam

A protected greenbelt lies behind the house being appraised. A trainee proposes a $15,000 upward adjustment to two comparables that back onto other houses, taking the figure from a rule of thumb. Market data in the neighborhood do not isolate the greenbelt's effect through paired sales or any other measurement. What is the most appropriate treatment of this difference?

Correct Answer

B) Rate the comparables inferior in this element and analyze qualitatively

When the market data do not support a dollar or percentage amount, the appraiser can still recognize the direction of the difference: the comparables lack the greenbelt and are inferior in that element. Relative comparison analysis carries that rating into the overall ranking without inventing a number. A rule-of-thumb figure is not a market-based adjustment, ignoring a known difference is not analysis, and a builder's lot premium is a historic price set by the seller rather than a measure of today's market.

Answer Options
A
Keep the $15,000 adjustment as a common industry figure
B
Rate the comparables inferior in this element and analyze qualitatively
C
Leave the greenbelt out of the analysis because it is not measurable
D
Use the builder's lot premium from the 2004 original sales

Why This Is the Correct Answer

Option B is correct because rating the comparables inferior for the greenbelt reflects the market fact that the subject has a feature they lack, without claiming a precision the data do not provide. The rating then feeds the overall ranking of each sale.

Why the Other Options Are Wrong

Option A: Keep the $15,000 adjustment as a common industry figure

Option A keeps the $15,000 rule-of-thumb figure. Fannie Mae's guide gives a rule-of-thumb adjustment as an example of an inappropriate one, because adjustments must reflect the market's reaction.

Option C: Leave the greenbelt out of the analysis because it is not measurable

Option C drops the greenbelt because it cannot be measured. Being unmeasurable in dollars does not make a difference irrelevant; qualitative analysis is the tool for exactly this case.

Option D: Use the builder's lot premium from the 2004 original sales

Option D uses the builder's lot premium from the 2004 original sales. That premium was set for new homes more than two decades ago, not measured from today's resale market, so it does not show what buyers pay for the greenbelt now.

No data, use direction

If the market will not tell you how much, it can still tell you which way.

How to use: Use it when a difference matters but no paired sales or other evidence measure it.

Exam Tip

Prefer an answer that reflects the difference qualitatively over one that plugs in an unsupported figure or ignores the difference.

Common Mistakes to Avoid

  • -Using a rule-of-thumb adjustment without market support
  • -Ignoring a difference because it cannot be measured in dollars
  • -Treating historic builder premiums as current market adjustments

Concept Deep Dive

Analysis

The question tests why relative comparison analysis exists. It lets the appraiser account for a real difference when the data cannot support a quantitative adjustment, instead of either guessing a number or ignoring the difference.

Background Knowledge

Quantitative adjustments need data that isolate a difference. When such data are lacking, qualitative techniques compare sales as superior, similar or inferior and place the subject within the ranked array.

Real-World Application

An appraiser cannot find enough greenbelt and non-greenbelt pairs to measure the premium. The report explains that the comparables are inferior in this element and that the subject is placed toward the upper part of the bracket for that reason.

relative comparisonqualitative analysisrule of thumbmarket-based adjustmentgreenbelt
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