Public ArcGIS MapServer endpoint for Guilford County parcel data. URL, supported fields, and a working sample query — copy it, or open it directly in the UrbanKit parcel lookup tool.
https://services.nconemap.gov/secure/rest/services/NC1Map_Parcels/MapServer/1/query?where=cntyfips='081'+AND+UPPER(ownname)+LIKE+UPPER('%SMITH%')&outFields=parno,ownname,siteadd,scity,mailadd,cntyfips&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| parno | Parcel Number | YES |
| ownname | Owner Name | YES |
| siteadd | Site Address | YES |
| scity | Site City | NO |
| mailadd | Mailing Address | NO |
| cntyfips | County FIPS (3-digit, '081' = Guilford) | YES |
Guilford County (Greensboro, pop. 540,000) served via NC1Map statewide parcel layer. Filter by cntyfips='081'. Verified 2026-05-15: returns Greensboro addresses. Same endpoint as other NC1Map counties (Forsyth, Durham, Cumberland, Buncombe); filter by cntyfips differentiates. Guilford County GIS Hub at gcgis.guilfordcountync.gov exposes only boundary/road layers; for parcel + owner, NC1Map is the only public REST path.
NC OneMap / NC Geographic Information Coordinating Council (GICC) — statewide parcel layer — https://www.nconemap.gov/pages/parcels
/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.