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Sales ComparisonMEDIUM16.4% of exam

A comparable sold for $272,000 with 1,850 square feet and 2 bathrooms. The subject has 1,950 square feet and 2.5 bathrooms. Relevant evidence supports a marginal $68 per square foot for the GLA difference and $4,500 for the extra half bath. What adjusted price results?

Correct Answer

D) $283,300

272000 + (1950 − 1850) × 68 + 4500 = 283300. Common errors: subtracting the half-bath adjustment instead of adding it gives $274,300; leaving out the half-bath adjustment gives $278,800; subtracting the GLA adjustment instead of adding it gives $269,700.

Answer Options
A
$269,700
B
$274,300
C
$278,800
D
$283,300

Why This Is the Correct Answer

Option D is correct because the comparable is inferior in both GLA and bathrooms, so both adjustments are added. GLA: (1,950 − 1,850) × $68 = $6,800; half bath: +$4,500. $272,000 + $6,800 + $4,500 = $283,300.

Why the Other Options Are Wrong

Option A: $269,700

Option A, $269,700, comes from subtracting the GLA adjustment instead of adding it: $272,000 − $6,800 + $4,500. The comparable is smaller than the subject, so the $6,800 is added, giving $283,300.

Option B: $274,300

Option B, $274,300, comes from subtracting the half-bath adjustment instead of adding it: $272,000 + $6,800 − $4,500. The comparable lacks the half bath, so the $4,500 is added, giving $283,300.

Option C: $278,800

Option C, $278,800, leaves out the half-bath adjustment: $272,000 + $6,800. Adding the supported $4,500 for the missing half bath gives $283,300.

One line per difference

Treat each difference as its own grid line with its own sign, then add the lines together.

How to use: Use this to avoid dropping or mis-signing an adjustment in multi-step grid problems.

Exam Tip

Set the sign for each feature separately before adding; distractors often flip or omit one adjustment.

Common Mistakes to Avoid

  • -Flipping the sign on one of several adjustments
  • -Leaving out one feature's adjustment
  • -Applying the full price per square foot to a GLA difference

Concept Deep Dive

Analysis

This question tests combining two upward adjustments for an inferior comparable. The comparable has 100 fewer square feet and one less half bath than the subject, so both adjustments are positive. The adjusted price is $272,000 + 100 × $68 + $4,500 = $283,300.

Background Knowledge

Each difference between a comparable and the subject gets its own supported adjustment, and the adjustments are combined to reach an adjusted price. Adjustments are made to the comparable, upward where it is inferior and downward where it is superior. Marginal rates are used for size differences.

Real-World Application

An appraiser compares a 1,950-square-foot subject with 2.5 baths to a 1,850-square-foot comparable with 2 baths. Market data support $68 per square foot for GLA and $4,500 for a half bath. The grid shows +$6,800 and +$4,500, for an adjusted price of $283,300.

GLA adjustmentbathroom adjustmentadjusted sale priceinferior comparablemarginal rate
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