Public ArcGIS MapServer endpoint for Hamilton County parcel data. URL, supported fields, and a working sample query — copy it, or open it directly in the UrbanKit parcel lookup tool.
https://mapsdev.hamiltontn.gov/hcwa03/rest/services/Live_Parcels/MapServer/0/query?where=UPPER(OWNERNAME1)+LIKE+UPPER('%SMITH%')&outFields=PBA_NUM,OWNERNAME1,ADDRESS,GISLINK&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| PBA_NUM | Parcel Book Account Number | YES |
| GISLINK | GIS Link (Parcel ID) | YES |
| OWNERNAME1 | Owner Name 1 | YES |
| OWNERNAME2 | Owner Name 2 | NO |
| ADDRESS | Site Address | YES |
| STNUM | Street Number | NO |
| STNAME | Street Name | YES |
| MAP | Map Number | NO |
| PARCEL | Parcel Code | NO |
Hamilton County (Chattanooga, pop. 375,000) Live_Parcels layer — service name 'Live' indicates real-time feed from the assessor. Service is on mapsdev.hamiltontn.gov (hcwa03 subdirectory). 15 fields confirmed: OBJECTID, PARCEL_TYP, PBA_NUM, GISLINK, OWNERNAME1/2, STNUM, DIRPFX, STNAME, TYPESFX, ADDRESS, MAP, GROUP_, PARCEL. PBA_NUM is the full parcel book/account number (e.g., '033006 00302P000'); GISLINK is the trimmed parcel ID. Verified 2026-05-15: SMITH returns addresses like '16909 DAYTON PIKE', '703 GRAYSVILLE RD'. Note: distinct from Hamilton County OH (Cincinnati, FIPS 39061) in the atlas.
Hamilton County Geospatial Technology — https://gis.hamiltontn.gov/
/query?where=…&outFields=*&f=jsonto the URL. The sample query above is a working example you can paste into a browser tab to see the raw JSON response.Counties publish parcel data through their own ArcGIS Server installations, each with its own schema. One county uses APN, another uses PIN, a third uses PARCEL_ID. Some expose owner names; others keep them on a separate assessor's portal. The searchable fields list above reflects what this county actually publishes — not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
Many county servers allow public reads but block browser cross-origin requests. The UrbanKit parcel lookup tool fetches directly from your browser; if it works there, the layer is technically public. For your own integration, you may need a same-origin proxy or server-side fetch.
Possibly — counties move services without warning. We re-verify entries weekly and flag stale ones. If you're seeing a fresh 404, please let us know and we'll update the listing.
Most are. Public ArcGIS layers don't typically rate-limit individual reads, but heavy programmatic use can trigger throttling at the host level. Be respectful — query what you need.