Retrospective work in Scottsdale is a reconstruction problem: the appraiser has to return the property to an earlier market. The appraisal should follow the competitive segment, not the prestige of the city name. A retrospective appraisal should recreate the competitive choices buyers actually had on the stated prior date.
A retrospective appraisal should identify what the neighborhood, competing inventory, access, and development pattern looked like on the effective date. Later growth can explain how the area changed, but it should not be used as if historical buyers already had those choices. For Scottsdale, the appraisal should consider custom/luxury only when it changes the subject's competitive position.
Looking back to the earlier market, older infill neighborhoods, condominium markets, resort-adjacent housing, golf communities, and desert custom areas can all carry Scottsdale addresses. The appraisal should follow the competitive segment, not the prestige of the city name. The useful evidence is whatever shows how that characteristic affected substitution on the stated prior date.
Looking back to the earlier market, gross lot size alone may say little about the site's competitive utility. In environmentally sensitive areas, natural washes, native vegetation, slopes, ridges, and required natural-area open space can affect usable land and privacy. The analysis should test the feature against market evidence from the period being reconstructed.
Market movement can help explain the period, but a retrospective value should not be produced by mechanically applying a citywide appreciation rate to today's value. The subject still needs historical comparable evidence from its actual segment.
Prior listings, permits, maps, photographs, and improvement records can resolve whether a later feature belongs in the retrospective analysis. Later information can be considered as context, but it should not replace evidence from the prior market.
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