Quick Answer
GLA only counts finished space above grade, meaning a finished basement generally isn't included the same way. That's a common reason a home appraisal and a listing description can cite different square footage for the same house.
- Counts
- Finished, above-grade living space
- Usually excludes
- Finished basements, unfinished areas, garages
- Why it matters
- Drives the comparable sales the appraiser selects
- Who calculates it
- The appraiser, using standardized measurement methods
Why GLA and Listed Square Footage Can Differ
Listings sometimes include finished basement space in the total square footage shown to buyers, while an appraiser's GLA calculation typically keeps that space separate and values it differently. Neither number is wrong; they're just measuring different things for different purposes.
This distinction matters most in Central Indiana homes with finished basements or converted spaces, where the gap between listed square footage and GLA can be a few hundred square feet.
How GLA Affects Comparable Sales
Appraisers select comparable sales based partly on similar GLA, so a home with an unusually large or small GLA relative to its neighborhood can be harder to value precisely. This is one reason two homes that look similar from the street can appraise differently.
If a reconsideration of value is needed after a low appraisal, GLA accuracy is often one of the first things a buyer's agent double-checks.
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Frequently Asked Questions — Gross Living Area (GLA)
Does a finished basement add to GLA?
Usually not in the same category as above-grade space. It's typically valued separately, though it can still add to a home's overall worth.
Why does my appraisal show different square footage than my listing?
The appraiser measures using standardized above-grade guidelines, while listing square footage sometimes includes finished basement or other space.
Can I dispute an appraiser's GLA measurement?
Yes, if you believe it's inaccurate, this is one of the details commonly raised in a reconsideration of value.
Does GLA affect my home's market value?
It's one factor among several appraisers weigh, alongside condition, lot, upgrades, and recent comparable sales.