What they said was:
Nearly 95% of comps analyzed had net adjustments less than 15%, suggesting that appraisers strictly adhered to the net adjustments guideline. Fannie Mae’s concern is that the adjustments might be artificially low.
Appraisers also appear to adhere to the 25% gross adjustment guideline, with nearly 94% of comps having gross adjustments less than 25%. Again, this raised concerns with the accuracy of these adjustments
So if net is less than 15% it is pretty rare that gross would be more than 25%. But here it is, the sentence above and below their 1st chart.
http://www.scribd.com/doc/254761393/FNMA-Lender-Letter-LL-2015-02-About-CU#scribd
and,
The next chart shows the median amount of an adjustment for GLA by state. Analysis shows little variation in the median GLA adjustment despite significant variation in price. Only in Hawaii does the median GLA adjustment break $50 per square foot, even though median GLA price exceeds $50 per square foot in all 50 states and is significantly higher in certain market areas.
Again, this is not portrayed by their charts, which use medians, instead of averages, therefore the outliers are not counted, but the obvious trend line of the GLA adjustment in their state price chart is a definite upward trend from the low <$100k to the lower than Hawaii, >$900 homes, from $15 a square to $ 56 a square with the medians flattening between $303k and $320k, which, given the prevalence of new tract homes during the boom years, might just be accurate with the price differences reflected in 2 versus 3 car garages with little differences in GLA. Because the data is not presented by different sized homes, but rather is presented as price. So $303k and $320k might just be the same sized homes, but with some with views, or extra garages or built in pools, therefore the GLA adjustment does not account for any size difference.
They infer that because the majority of comps are below the net adjustment guidelines they created, that appraiser's are wrong and are making low adjustments, even though, the adjustments are within the Guidelines they wanted.
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