A prior-date valuation in Gila Bend should be built from the market buyers actually faced, not from today's completed version of the area. The Gila River and desert drainage environment make floodplain, wash, elevation, and site access relevant where they affect the subject. The analysis should be built from evidence available around the earlier effective date and should resist hindsight from later market events.
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 Gila Bend, the appraisal should consider utilities only when it changes the subject's competitive position.
In reconstructing the prior market, the Gila River and desert drainage environment make floodplain, wash, elevation, and site access relevant where they affect the subject. The analysis should test the feature against market evidence from the period being reconstructed.
Looking back to the earlier market, water source, septic, road access, detached structures, fencing, and usable land may explain differences that a suburban grid would miss. The useful evidence is whatever shows how that characteristic affected substitution on the stated prior date.
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.
Old listings, photographs, permit history, recorded documents, maps, and subdivision records can help reconstruct both the subject and its surroundings. Later information can be considered as context, but it should not replace evidence from the prior market.
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