JB PARCELMaricopa County sale history: reading affidavits of value like an appraiser
When property sells in Arizona, the deed is recorded with an affidavit of value: a sworn form stating the price, the date, the financing, and the relationship between the parties. The county and the Department of Revenue use those affidavits to value everything else, which is exactly why they are gold for an investor. You are reading the same raw material the assessor reads.
What never shows up
State law exempts a list of transfers from the affidavit entirely: quitclaims to quiet title for no money, payoffs of recorded contracts, leases and easements, and a set of family and entity transfers. So an absence of sale history does not mean nothing happened. It often means what happened was not a market sale. If a parcel changed owner names with no affidavit behind it, treat the transfer as a signal to look up the deed itself, not as a comp.
Not every affidavit is a comp
The affidavit tells on itself, and the flags are the most valuable part of the form.
| What the record shows | What it means for you |
|---|---|
| Buyer and seller related | Family or entity shuffle. Price is not market. Skip it as a comp. |
| Partial interest transferred | A share of the property sold, not the whole. The price understates the parcel. |
| Multiple parcels on one affidavit | A package price spread across parcels. No single parcel is worth the stated amount. |
| Zero or nominal price | A recorded transfer, not a purchase. Useful for tracing ownership, useless for value. |
| Unusual financing terms | Seller carry, assumption, or trade can move a price well off market. Read before you rely. |
Appraisers call the clean remainder arm's length sales, and everything they publish about the market is built on that filtered set. When you pull comps by hand, apply the same discipline or your numbers will be quietly wrong in the seller's favor.
Doing it in JB PARCEL
- Open any Maricopa parcel and read the last recorded sale on the card: price, date, and document reference.
- Use nearby sales to pull the surrounding transfers, then throw out anything flagged related-party, partial-interest, or zero-price before you average anything.
- Watch the sale date against the listing story. A recent low transfer with no affidavit flags is worth a deed lookup; wholesalers leave exactly that trail.
Open a parcel card for the last recorded sale, then use nearby sales to build a comp set you can defend.
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