An appraiser sketching a home finds the perimeter dimensions do not close. This indicates:
Correct Answer
B) A measurement was missed or recorded incorrectly
Why this is correct: The governing principle is that a closed shape's perimeter must be mathematically consistent; the sum of lengths of opposite sides must be equal. The original explanation states that a non-closing perimeter is an arithmetic signal to re-measure. Therefore, the most direct and common cause is that a measurement was missed or recorded incorrectly during the initial sketch. Why the other choices are wrong: The home was built out of square deliberately is incorrect because while minor construction irregularities occur, a significant non-closure in a perimeter sketch is not a deliberate design feature. The sketch software requires calibration is wrong because calibration issues would affect all measurements systematically, not typically cause a single perimeter to fail to close. GLA should be reported as approximate is incorrect; while GLA can sometimes be approximate, a non-closing perimeter is a specific data collection error that must be corrected, not a reason to default to an approximate report. Exam tip: For sketching questions, remember: if the math doesn't close, you missed a measure.
Why This Is the Correct Answer
A measurement being missed or recorded incorrectly is the correct reading because the failure to close is an arithmetic contradiction, and contradictions in field data point to the data rather than to the building. Real houses are occasionally out of square by a few inches, which produces small residuals, but a genuine non-closure of any consequence is a missed dimension. The appraiser's remedy is to walk the perimeter again, look for the jog or bump-out that was skipped, verify against interior dimensions where possible, and reconcile before leaving the property. Documenting the final sketch and the measurements in the workfile is part of the record keeping obligation, and where a lender or an assignment condition requires a particular measuring standard, the appraiser should follow it consistently and say which one was used.
Why the Other Options Are Wrong
Option A: The home was built out of square deliberately
Deliberate out-of-square construction does exist, in irregular lots, custom designs, and older buildings, but it produces small discrepancies of inches rather than a perimeter that fails to close. An out-of-square building still has a closed outline, since every wall meets another wall. The option confuses a shape's angles with whether its dimensions add up.
Option C: The sketch software requires calibration
Sketching software calculates from the dimensions entered, so it reports the discrepancy rather than causing it, and a calibration problem would distort measurements systematically rather than leaving one run short. Blaming the tool for an arithmetic contradiction in the input is a way of avoiding the re-measure. Software that flags a non-closure is doing exactly what it should.
Option D: GLA should be reported as approximate
Labeling the area as approximate does not repair an unknown error and would leave a size figure that may be materially wrong driving every comparable adjustment. Gross living area should be developed from measurements the appraiser can support, not hedged with a qualifier. Using a disclaimer in place of correcting known bad data is the reasoning error the option tests.
If It Does Not Close, Walk It Again
The building always closes; only your notes fail to. Add the runs one way and the other way, and when they disagree, the tape goes back in your hand. Never solve a field problem with arithmetic at the desk.
How to use: Check closure before leaving the property, adding opposing runs while you can still walk the perimeter. When the sums disagree, look for the skipped jog, bay, or offset rather than adjusting a number. Record the corrected sketch and measurements in the workfile.
Exam Tip
Sketch questions test whether you re-measure or rationalize. A perimeter that does not close is a data error every time.
Common Mistakes to Avoid
- -Adjusting a dimension at the desk so the sketch will close instead of re-measuring on site
- -Missing small jogs, bays, and entry alcoves that interrupt an otherwise straight run
- -Leaving the field sketch and measurements out of the workfile that supports the reported area
Concept Deep Dive
Analysis
This item tests the arithmetic self-check built into a floor plan sketch. Any closed rectilinear outline has a property the appraiser can verify on site: the sum of the dimensions running one direction must equal the sum running the opposite direction, so opposing runs balance and the perimeter returns to its starting point. When the figures do not close, the shape drawn is not the shape measured, and the overwhelmingly likely explanation is a data collection error, a jog that was walked past, a dimension read from the tape incorrectly, a number transposed in the notes, or a bay or offset that was not recorded. This matters because gross living area drives the sales comparison analysis, and an error in the sketch propagates into the size adjustment on every comparable. The fix is to re-measure on site rather than to force the numbers, since an appraiser who adjusts a dimension to make the math work has documented a building that does not exist.
Background Knowledge
You need to know that a closed rectilinear perimeter must balance, with opposing runs summing equally, and that this provides an on-site check of field measurements. You should know that gross living area is a primary basis for size adjustments in the sales comparison approach, so sketch errors propagate through the analysis. You also need to know that the sketch and supporting measurements belong in the workfile, and that where a specific measuring standard applies to an assignment, whether by client requirement or lender guideline, the appraiser should apply it consistently and identify it.
Real-World Application
Measuring a 1970s split-level, the appraiser finds the front and rear runs disagreeing by three feet. Rather than splitting the difference, she walks the perimeter again and finds a small bumped-out entry alcove she had stepped past on the first pass. With that dimension added, the sketch closes, the gross living area increases by a modest amount, and the size adjustments to her comparables change accordingly.
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