A historical appraisal in Avondale should explain what the property was, what the surrounding market was, and why the chosen sales belong to that time. In later subdivisions, floor plan, builder, lot position, HOA, and competing new construction can be stronger indicators of substitution than proximity to older housing. A historical appraisal is an evidence-reconstruction exercise: what existed, what buyers knew, and which alternatives were actually available then.
Historical valuation should not be a current value pushed backward by a percentage. The assignment needs evidence from the selected period, including the subject's condition, property rights, competitive setting, and the alternatives buyers actually had. For Avondale, the appraisal should consider Agua Fria/drainage context only when it changes the subject's competitive position.
In the period being valued, in later subdivisions, floor plan, builder, lot position, HOA, and competing new construction can be stronger indicators of substitution than proximity to older housing. Historical evidence should show whether that condition existed during the period being valued and how buyers responded to it.
An old sale is not automatically a good historical comparable. The appraiser should understand the transaction, the neighborhood stage, the property's condition, and whether the sale reflected the same residential market during the period being studied.
The most useful records are those that show the subject's condition, site utility, ownership interest, and neighborhood context during the selected period. The strongest record links those documents to market evidence from the same period.
A historical appraisal is most useful when the reader can follow the selected period, property condition, market segment, and comparable evidence from beginning to end.
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