How to Look Up a Property by Parcel Number (APN)
An Assessor Parcel Number (APN) is a county's unique ID for a parcel of land. Here's how to look one up and search property data by it.
Find the APN first
A property's APN is printed on its property tax bill and deed, and is searchable by address on the county assessor or property-appraiser website. Formats vary by county (dashes, dots, or spaces).
Search the dataset by parcel
APNs are unique within a county, not nationally — two counties can reuse the same number. So pair the parcel_apn with the 5-digit county_fips to identify a parcel uniquely:
SELECT * FROM 'realestatedataset-california-2026-08-01.parquet'
WHERE parcel_apn = '1234-567-890' AND county_fips = '06073';Both fields are in every record — see the data dictionary.
Look up one parcel live
Each dataset record also has a stable id that's a live endpoint on Straply's API, so you can fetch a single parcel's current record without downloading a file.
Frequently asked
Can I search property records by parcel number?
Where do I find a property's APN?
Why isn't the APN unique on its own?