Key takeaways
- Keep the county and state with every parcel number; an APN alone is not a nationwide property identity.
- Use a map when vacant land has no searchable street address, then cross-check the resulting record.
- Resolve multiple parcels, changed numbers, or conflicting acreage before researching the property as one tract.
1. Find the responsible county record system
Identify the state and county from the property's location, then open the county government's assessor, appraiser, or property-record directory. Follow that office's link to its search portal. A county may use a contractor's website, so start from the official office instead of assuming the first search result is authoritative.
Look for labels such as parcel number, assessor parcel number (APN), parcel ID, or property identification number. The office may also show an account number or a document recording number. Keep each label with its value rather than treating every number on the screen as interchangeable.
2. Search the address, or locate vacant land on the map
Try the property's street address in the official search. If that fails, follow the portal's own search instructions and try a shorter street search. Vacant land may be easier to locate by nearby roads and the county parcel viewer. A seller-provided map pin can help you navigate, but do not accept the parcel under that pin without checking it.
For example, the Maricopa County Assessor publishes separate instructions for record searches and locating parcels in its map viewer. Use those instructions for that county; another office may use different fields and formatting.
3. Cross-check the record before copying its identifier
Compare the location, road relationships, mapped shape, reported acreage, and available legal-description reference with the listing and transaction documents. These are consistency checks, not a substitute for a survey or title review. A matching address alone does not settle a conflict between different records.
Copy the parcel identifier exactly as the office displays it, including leading zeros and any suffix. Save the official record link, jurisdiction, retrieval date, and any warnings about the map. Follow the portal's formatting guidance when using that identifier in another search.
4. Handle multiple matches and parcel changes
If a listing includes several parcels, record each identifier separately and ask which land is included in the sale. Do not silently choose the largest shape, nearest point, or first search result. Ask the assessor or closing professional to reconcile splits, combinations, retired identifiers, or conflicting descriptions.
If the office returns no result, keep the status unresolved. The cause could be a different jurisdiction, search format, missing address, changed identifier, or incomplete online record. An unsuccessful lookup is not evidence that the property does not exist.
5. Keep a usable property research record
Your research record should let someone else repeat the lookup and understand what remains uncertain. Bring it to the next conversation with the local office, surveyor, or closing professional. In LandBinder, define or confirm the boundary before treating any map overlay as evidence about the land being considered.
- State, county, and responsible record office
- Parcel ID with its original field label and formatting
- Official record URL and date accessed
- Listing address or location reference
- Other parcels included in the proposed sale
- Unresolved boundary, acreage, or identity differences
Official sources and further reading
- Maricopa County Assessor: searching property records
An official example of a county's property-search instructions; search options differ elsewhere.
- Maricopa County Assessor: locating a parcel in the map
Instructions for this county's parcel viewer, including parcel-number search.
Keep the evidence in its proper role
LandBinder provides preliminary public-data screening. It does not provide a survey, title opinion, appraisal, legal advice, engineering advice, environmental determination, permit decision, or guarantee. Verify material findings with the responsible office and qualified professional.