Rockingham County parcel REST endpoint not yet listed.
Rockingham County does not have a verified public ArcGIS REST parcel endpoint in our directory. Many counties run their parcel layers on the assessor's portal or behind a viewer-only interface. If you know the URL, send it in.
Same restriction as Hillsborough County. NH GRANIT ParcelMosaic requires authentication. Rockingham County includes Manchester-area suburbs, Salem, Derry, Portsmouth — all relying on municipal-level Vision Government Solutions or AxisGIS portals, none of which expose a standard ArcGIS REST FeatureServer. Monitor granit.unh.edu for any move to open public access; as of 2024 GRANIT updated their statewide mosaic but kept it token-gated.
NH GRANIT (Geographically Referenced Analysis and Information Transfer System), UNH — https://granit.unh.edu/
/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.