Public ArcGIS FeatureServer endpoint for Hartford County parcel data. URL, supported fields, and a working sample query — copy it, or open it directly in the UrbanKit parcel lookup tool.
https://services3.arcgis.com/3FL1kr7L4LvwA2Kb/arcgis/rest/services/Connecticut_CAMA_and_Parcel_Layer_2024/FeatureServer/0/query?where=Town_Name='Hartford'+AND+UPPER(Owner)+LIKE+UPPER('%SMITH%')&outFields=Parcel_ID,Town_Name,Owner,Location_1,Assessed_Total&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 |
| Town_Name | Town Name (filter to Hartford-area towns, e.g. Hartford, West Hartford, East Hartford) | YES |
| Owner | Owner Name | YES |
| Co_Owner | Co-Owner Name | YES |
| Mailing_Address | Mailing Address | YES |
| Mailing_City | Mailing City | NO |
| Mailing_State | Mailing State | NO |
| Location_1 | Property Location / Address | YES |
| Property_City | Property City | NO |
| Assessed_Total | Total Assessed Value | NO |
| Assessed_Land | Land Assessed Value | NO |
| Assessed_Building | Building Assessed Value | NO |
| Appraised_Land | Appraised Land Value | NO |
| Appraised_Building | Appraised Building Value | NO |
| Valuation_Year | Valuation Year | NO |
| Sale_Price | Sale Price | NO |
| Sale_Date | Sale Date | NO |
| State_Use | State Use Code | NO |
| State_Use_Description | Use Description | NO |
| Living_Area | Living Area (sq ft) | NO |
49 fields confirmed including Parcel_ID, Parcel_Typ, Town_Name, Unit_Type, link_1, Location_1, Property_City, Owner, Co_Owner, Mailing_Address, Mailing_City, Mailing_State, Assessed_Total, Assessed_Land, Assessed_Building, Pre_Yr_Assessed_Total, Appraised_Land, Appraised_Building, Appraised_Outbuilding, Valuation_Year, Land_Acres, State_Use, State_Use_Description, Model, Condition, Living_Area, Effective_Area, Total_Rooms, Number_of_Bedroom, Number_of_Baths, Number_of_Half_Baths, Sale_Price, Sale_Date, Qualified, Prior_Sale_Date, Prior_Book_Page, Prior_Sale_Price, Occupancy, Planning_Region, Collection_Year, FIPS_Codes, ayb, eyb. NOTE: Connecticut does not have active county governments — county is a historical/geographic designation only. This statewide CT CAMA 2024 layer covers ALL Connecticut municipalities. Filter by Town_Name for specific towns. Hartford County towns include Hartford, West Hartford, East Hartford, Manchester, Enfield, Bloomfield, Glastonbury, Newington, Windsor, Wethersfield, South Windsor, New Britain, Southington, Bristol, etc. Owner query confirmed returning real residential parcels. This is a town-reported CAMA (Computer Assisted Mass Appraisal) dataset collected by CT OPM.
Connecticut Office of Policy and Management (OPM) — GIS Data — https://portal.ct.gov/OPM/IGPP/Publications/GIS-Data
/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.