Retrospective work in Guadalupe is a reconstruction problem: the appraiser has to return the property to an earlier market. Freeways, canals, surrounding cities, and nearby nonresidential uses can influence individual parcels differently. 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 Guadalupe, the appraisal should consider cross-boundary comp discipline only when it changes the subject's competitive position.
Looking back to the earlier market, freeways, canals, surrounding cities, and nearby nonresidential uses can influence individual parcels differently. The useful evidence is whatever shows how that characteristic affected substitution on the stated prior date.
Looking back to the earlier market, physical proximity to Tempe or Phoenix does not prove that buyers considered those neighborhoods interchangeable with Guadalupe. 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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