Why the change?
Valuations of residential property correlate strongly with GLA, yet
to date there is little consistency in how appraisers determine it.
Our adoption of the ANSI standard for measuring, calculating, and
reporting square footage:
• Creates alignment across market participants.
• Provides a professional and defensible method for the appraiser.
• Allows transparent and repeatable results for the user of the
appraisal report
What if comparable sales are measured differently?
GLA for properties in local MLS systems and assessor records may
not be ANSI-compliant. The appraiser may not know what method an
MLS listing or assessor used to calculate the GLA. Through research
and their knowledge of the local market, appraisers determine if
the GLA provided through alternate sources should be adjusted.
The adjustment process does not change the requirement to report
subject GLA to the ANSI standard
Is there an exception process?
If the appraiser is unable to adhere to the ANSI Standard, the appraiser
will provide the code “GXX001 –” in the Additional Features field on the
appraisal form and must explain why compliance was not possible.
For example, berm homes with their entire square footage below
grade would be eligible for an exception. The appraiser must provide
justification for an exception, lenders are responsible for confirming
the appraiser provided an adequate explanation. Fannie Mae will
monitor for inappropriate use of exceptions (i.e., using methods other
than the ANSI standard for homes that have typical above grade
square footage)
