Stairway to Confusion – What is Included in GLA?
by C. Brett Bowen
Excerpt: There has been considerable discussion over the years about gross living area (GLA) measurement standards. The ANSI Z765 standard gets the lion’s share of the attention, and is the most widely referenced standard in the industry by far. It can also be the most difficult to interpret, particularly when it comes to stairs. Here’s why.
It is primarily important to recognize two very important facts:
1) a standard is nothing more than the definition of a unit of comparison
2) it is the appraiser’s responsibility to be consistent with that definition.
First, what do I mean when I say that a standard is nothing more than the definition of the unit of comparison? The unit of comparison for something is critical to the understanding of that thing.
Second, as an appraiser, consistency with the definition is actually more important than which definition is chosen.
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My comment: Worth reading. I have seldom used ANSI. The standards were developed for new home construction. I have appraised many homes on hillsides, with often only the garage at street level (or just a driveway). Many historic homes, on level streets, have different types of “basements” converted to living area: above grade, partly below grade, etc. If I worked in suburbia, ANSI would work better. I use what the local market tells me.
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NOTE: Please scroll down to read the other topics in this long blog post on unusual homes, mortgage origination stats, sfr zoning, german appraisers, GLA, etc.
Excerpts: This may not be a major problem if the house has sufficient bedrooms to match what is typical and expected in the neighborhood. It can have a negative impact on the marketability of the home if this arrangement reduces the number of usable bedrooms from what is typical.
Excerpts: Sometimes, two homes with wide age differences can have the same effective age. For instance, a thirty-year old home may have an effective age that is the same as a fifty-year old home, if the fifty-year old home has been renovated to a degree that is comparable to the younger home. If this is the case, while there is a relatively wide age gap, no age or condition adjustment may be supportable.