Just make a general comment on any adjustment approach and maybe 1 or 2 charts if you can make them. It's either matched pairs, sensitivity, depreciated cost, cost or regression. The hardest is GLA. Most small items are just cost depreciated, or market reaction to them. ex: bath adjustment based on cost new $15,000 minus any depreciation, and or location factors. There is a GLA excell chart on this blog that you can play with, looks good for the GLA. They want to know that you did more than look at the 1980 adjustments list.
Here is a overall general comment to have, beside some specifics ones.
The Appraising Residential Properties, 4th Edition, Appraisal Institute, "Other Quantitative Adjustment Techniques”, Page 344 further states: “…In instances where paired sales analysis is not conclusive, the appraiser may apply judgment to resolve the problem." The adjustments resulting from the appraiser's judgment is based on a study and understanding of historic or past buyer preferences. It further suggests that cost and depreciated cost data may be used with the appraiser arriving at the value contribution (not cost new) of certain features. The process of supporting the contribution of individual variables (features) is limited and often difficult to quantify, with adjustment deemed to be qualitatively supported unless otherwise addressed. All methods of supporting adjustments are usually limited by inherent uncertainties within the applications themselves.
Adjustments, in this report, are based on a combination of Paired Analysis with Sensitivity and/or Trend Analysis & on a study and understanding of historic or past buyer preferences. Support for adjustments may be based on multiple applications and rarely do two methods return identical results with a high degree of accuracy. While not always 'strongly' independently supported, collectively, the adjustments serve to narrow the adjusted value range of the comparables in support of the subject's 'most probable selling price' commensurate with the definition of Market Value set forth herein.