How to find out who owns a vacant parcel in Arizona (any county, free)

Every Arizona county publishes parcel ownership as public record, and none of it costs money. What varies is how many clicks it takes and how current it is. This is the sequence that works in all fifteen counties.

1. Get the APN, not the address

Vacant land rarely has a situs address, and when it does the address is often a placeholder the assessor assigned for mapping. The Assessor's Parcel Number (APN) is the key to everything else. In most counties it looks like 203-45-012A: book, map, parcel, with a letter suffix when a parcel has been split.

If you only have a location, open the county's GIS parcel viewer (every county's is linked on its county page), click the parcel, and read the APN off the popup. Google Maps does not show parcel lines; the county viewer does.

2. Assessor: owner name, mailing address, assessed value

The assessor's parcel search returns the owner of record, the mailing address where the tax bill goes, the legal description, the acreage, the full cash value and the use code. Two things to notice:

• The mailing address is not the owner's home. It is wherever they asked the bill to be sent. For out-of-state owners it is usually their home; for LLCs it is often a registered-agent or accountant's address.
• The use code tells you the assessor's opinion of what the land is. In Cochise County, codes beginning 00 are vacant land. Other counties use similar but not identical schemes; the code list is usually a PDF on the assessor's site.

3. Recorder: what they paid and when

Arizona requires an Affidavit of Property Value with most deeds (A.R.S. § 11-1133), and the recorder indexes it with the deed. Search the recorder's document index by the owner name or by APN where the county supports it. The affidavit shows the sale price, the date, whether it was a cash or financed sale, and whether the buyer and seller were related. A parcel bought for $900 at a tax deed sale in 2009 and one bought for $40,000 last year will price very differently when you make an offer.

4. If the owner is an LLC or trust

Look the entity up at the Arizona Corporation Commission (ecorp.azcc.gov). The record shows the statutory agent, the members or managers, and whether the entity is in good standing. An LLC that was administratively dissolved years ago and still holds title is a common pattern in rural subdivisions; the members are usually reachable, but the deed will need the entity reinstated or a court order to convey clean title. Out-of-state LLCs show up in the ACC only if they registered to do business in Arizona, so you may need the home state's registry.

Trusts do not register anywhere. The trustee's name on the deed is what you have; the recorder's index for that name will often turn up a Certification of Trust or an earlier deed with a contact address.

5. Check the Treasurer before you write a letter

The Treasurer's parcel page shows whether taxes are current and whether a tax lien has been sold on the parcel. An owner who has not paid taxes in three years and has a lien certificate against the parcel is in a very different negotiating position than one who pays every October. Several counties publish the whole lien list as a downloadable file; we join it to the parcel layer in the Land Owner Pack.

What you may and may not do with it

Owner names and mailing addresses are public record under A.R.S. § 39-121. Mailing a letter to a property owner is unrestricted. Calling or texting is governed by the TCPA and the National Do Not Call Registry, and emailing by CAN-SPAM; none of those are affected by the fact that the address came from a public record. Arizona also allows a county to charge for public records used for a commercial purpose (A.R.S. § 39-121.03), which is why some assessor sites ask you to state a purpose before a bulk download.