A sale price can be important evidence, but timing, transaction structure, parcel configuration, and the circumstances of the transfer can change how useful that price is in a valuation appeal.
Start with the transaction, not the number
A recent sale deserves careful review when the buyer and seller were acting independently, the property was exposed to the market in an ordinary way, and neither side was under unusual compulsion. The closer the sale is to the relevant valuation date, the more useful it may be.
A $0 or nominal transfer is not the same thing as a market sale
Deeds can record transfers that are gifts, estate planning, entity changes, family transfers, or other non-market events. Those transfers may tell you little about market value even though they are the most recent item in the chain of title.
Multiple parcels require context
When one transaction includes a house and a neighboring vacant parcel—or a larger commercial assemblage—the total consideration may apply to the package rather than one parcel. The analysis should identify every parcel in the transaction and avoid casually assigning the full price to only one.
County coding is a clue, not the entire analysis
Auditor records and conveyance forms can contain sale-validity codes and transaction facts. Those indicators are most useful when they are considered together with the deed, conveyance information, parcel structure, and other available evidence.