Public ArcGIS FeatureServer endpoint for Denver County parcel data. URL, supported fields, and a working sample query — copy it, or open it directly in the UrbanKit parcel lookup tool.
https://gis.colorado.gov/public/rest/services/Address_and_Parcel/Colorado_Public_Parcels/FeatureServer/0/query?where=countyName+=+'Denver'+AND+UPPER(owner)+LIKE+UPPER('%SMITH%')&outFields=parcel_id,owner,situsAdd,sitAddCty,countyFips&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| parcel_id | Parcel ID | YES |
| countyName | County Name (filter: 'Denver') | YES |
| countyFips | County FIPS Code (filter: '031') | YES |
| situsAdd | Situs Address | YES |
| sitAddCty | Situs City | NO |
| sitAddZip | Situs ZIP | NO |
| owner | Owner Name | YES |
| owner2 | Owner Name 2 | YES |
| ownerAdd | Owner Address | NO |
| legalDesc | Legal Description | NO |
| zoningCode | Zoning Code | NO |
| saleDate | Sale Date | NO |
| salePrice | Sale Price | NO |
| apprValTot | Total Appraised Value | NO |
34 fields confirmed including parcel_id, countyName, countyFips, situsAdd, sitAddCty, sitAddZip, owner, owner2, ownerAdd, ownAddCty, ownAddStt, ownAddZip, legalDesc, landSqft, landAcres, block, lot, subCode, subName, zoningCode, zoningDesc, landUseCde, landUseDsc, saleDate, salePrice, apprValTot, asedValTot, URL, dateReceived. This is a statewide composite — query by countyName='Denver' OR countyFips='031' (note: FIPS here is the 3-digit county portion, not the full 5-digit). Owner query tested and confirmed with real Denver addresses. This same endpoint covers all 64 Colorado counties; filter by countyName or countyFips for any of them. Denver is a consolidated city-county (countyName='Denver' and cityName='Denver' are the same entity).
Colorado Governor's Office of Information Technology (OIT) — Colorado Geographic Information Systems Program — https://gis.colorado.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.