Bill:
I think you refer to this from the AI text, The Appraisal of Real Estate.
"GIM's are used to compare the income-producing characteristics of properties in the sales comparison approach. Nevertheless, converting a potential or effective gross income stream into a lump-sum capital value by applying a GIM is capitalization. "
The chapters in the AI text on capitalization are primarily a reprinting of Charles Akerson's indispensable, Capitalization Theory and Technique. The AI text often incorporates the work of individual member-authors. For example, part of the statistics and home design sections are originally from Henry Harrison books.
Akerson includes some other material that goes to the confusion over approaches. Akerson does not subscribe to the three-approach classification system. On page 5 he writes:
At times, the three approaches (if used) are so intertwined, some appraisers prefer the one-approach concept…The semantics of three approaches versus one approach or the chosen format for the appraisal report, however, need not be critical in giving the income capitalization approach its proper place within the appraisal process.
For many years, the AI(REA) texts have omitted critiques or alternative models to the three-approach system, even when the critiques and alternatives come from prominent AI author-members, like Akerson.
As a system of classification of methods, three approaches fails because of its illogical separation of capitalization from sales comparison. Just as Lite Beer can both taste great AND be less filling, appraisal methods can be capitalization AND sales comparison at the same time. It seems obvious that:
Capitalization, when used to find market value is sales comparison, if GIM, Re, Ro, Ye and/or Yo are units of comparison from area sales and regional surveys.
Capitalization, when used to find investment value is not sales comparison, if Re, Ro, Ye and/or Yo are based on individual preference
Gotta go, them ESPN guys are on with the football show.