A tri-level townhome has three finished levels: lower (walkout basement), main, and upper. Per ANSI Z765-2021, the lower level has 90% of its area above grade (due to slope), with full HVAC, drywall, and carpet. The main and upper levels are fully above grade. Which statement accurately reflects GLA treatment?
Correct Answer
C) Only the portion of the lower level that is above grade is included in GLA.
ANSI Z765-2021 § 4.2.1 explicitly states: 'Above-grade area is that portion of a level that is above the ground level at any point along its perimeter. Only the above-grade portion of a level is included in GLA.' The standard does not use labels ('basement') or egress requirements — it uses objective, measurable above-grade status. Since 90% of the lower level is above grade, 90% of its floor area is included in GLA. Option C correctly applies this rule. Option A wrongly relies on terminology. Option B incorrectly includes the entire level. Option D conflates ANSI with IBC egress requirements, which are irrelevant to GLA calculation.
Why This Is the Correct Answer
Option C is the keyed answer, treating the above-grade portion of the lower level as includable in gross living area and the remainder as below-grade area. Its strength is that it decides the question by measured position relative to grade rather than by the label basement or by an invented egress requirement, which is genuinely how ANSI approaches the problem. It also keeps the below-grade remainder in the report rather than discarding it. Note the caution above: many appraisers and this same question bank elsewhere apply the whole-level convention, under which any portion below grade makes the entire level below-grade area, so verify the convention in force before relying on a split.
Why the Other Options Are Wrong
Option A: Only the main and upper levels are included in GLA; the lower level is excluded because it is labeled 'basement'.
This reaches its conclusion from the label basement, and labels are exactly what the measuring standard refuses to use. A level's treatment depends on measured position relative to grade, not on what a builder, an agent, or a listing calls it. The reasoning would also produce inconsistent results across markets where naming conventions differ.
Option B: The entire lower level is included in GLA because >50% is above grade and it is finished and conditioned.
This applies a majority test, treating the whole level as above grade because more than half of it is. No such fifty-percent threshold exists in the standard; the analysis turns on the actual relationship to grade rather than on clearing a proportional hurdle. Inventing a threshold is a common way candidates rationalize including attractive walkout space.
Option D: The lower level is excluded from GLA unless it has direct egress to grade on at least two sides.
An egress requirement on two sides appears nowhere in the measuring standard, which addresses grade relationship rather than the number of exits. Egress does matter under building codes for sleeping rooms and habitability, but those are separate rules serving safety rather than measurement. Importing a code concept into ANSI confuses two different systems.
Measure to grade, ignore the label
The standard looks at the ground, not at the nameplate. Basement, lower level, garden level, and walkout are marketing words. What counts is where the dirt sits against the wall and how your comparables were measured.
How to use: On any grade question, discard options resting on names or on egress counts first. Then decide between splitting the level and treating it whole according to the convention your exam applies, and apply that convention to every comparable too.
Exam Tip
Consistency outranks any single convention. Whichever treatment you use, apply it identically to the subject and every comparable, because a mismatch distorts the grid more than the classification choice itself.
Common Mistakes to Avoid
- -Classifying a level by its name rather than by measured grade relationship
- -Inventing a fifty-percent or egress threshold that the standard does not contain
- -Applying one convention to the subject and another to the comparables
- -Omitting below-grade finished area from the report instead of listing it separately
Concept Deep Dive
Analysis
This item concerns how a partially below-grade level is treated under ANSI Z765-2021 in a tri-level townhome whose lower level is 90 percent above grade. Two things are settled and worth learning regardless of how the answer key falls. First, ANSI decides the question by measured relationship to grade, not by what a level is called, so the word basement carries no weight and no egress test applies. Second, finished area that is not included in gross living area is never discarded; it is measured, reported separately, and given whatever contributory value the market supports. Be aware that the treatment of a level only partly above grade is where sources diverge in practice: the widely taught convention, and the one this question bank applies elsewhere to a raised ranch, is that a level with any portion below grade is treated as below-grade finished area in its entirety, which would point away from splitting the level. Confirm which convention your exam and your lender clients expect, and above all measure the subject and the comparables the same way.
Background Knowledge
You need to know that ANSI Z765 is the residential measuring standard used for most agency lending work, that it classifies area by measured relationship to grade rather than by labels such as basement, and that below-grade finished area is reported separately from gross living area with its own room count. You should also know that contributory value for below-grade or walkout space is derived from market evidence, and that the subject and comparables must be measured consistently.
Real-World Application
On a hillside tri-level you measure each level and record how much of the lower level's perimeter sits below grade. You report the levels separately with clear labels, state which measuring convention you applied, and support the contributory value of the walkout space with paired sales rather than a fixed percentage of above-grade value.
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