Step-by-Step Guide

1. Find your county's ArcGIS REST endpoint — Search "[your county] GIS REST services" or check your county assessor's website for a link to their ArcGIS Server
2. Locate the parcels layer — Browse the REST services directory for a layer named "Parcels," "Tax Lots," or "Assessor Parcels." The URL will end in /FeatureServer/0 or /MapServer/0
3. Paste the URL above — Copy the full layer URL and paste it into the tool
4. Load the layer — Click "Load Layer" to fetch available fields from the service
5. Choose a search field — Select which attribute to search by (e.g., APN, site address, or owner name)
6. Enter your search term — Type a parcel number, street address, or owner name and press Search
7. Review results — Browse matching parcels and copy any field values you need

What is an ArcGIS Feature Layer?

An ArcGIS Feature Layer is a web service that provides access to geographic data stored on an ArcGIS Server. Most U.S. counties publish parcel, zoning, and land use data through ArcGIS REST services, making them queryable via standard web URLs. These services expose structured data including property boundaries, owner names, mailing addresses, assessed values, zoning designations, and more.

Feature Layers follow Esri's REST API specification, which means any tool that speaks HTTP can query them. This tool sends queries directly from your browser to the county's GIS server—no middleman, no data storage.

Finding Your County's ArcGIS REST URL

Most county GIS departments publish their data through an ArcGIS Server. Here's how to find the URL:

• Search Google — Try "[county name] arcgis rest services parcels" or "[county name] GIS open data"
• Check the county website — Look under departments like "GIS," "Assessor," "Property Tax," or "Information Technology"
• ArcGIS Hub — Visit hub.arcgis.com and search for your county's parcel data
• State GIS portals — Many states aggregate county data (e.g., California's CAL FIRE, Oregon's ORMAP)

The URL typically looks like: https://gis.countyname.gov/arcgis/rest/services/Parcels/FeatureServer/0

Common Parcel Data Fields

While field names vary by county, most parcel layers include some combination of:

• APN / PIN / Parcel ID — The unique assessor's parcel number
• Owner Name — Current property owner (individual, LLC, trust, etc.)
• Mailing Address — Where the tax bill is sent (may differ from site address)
• Site Address — Physical location of the property
• Zoning — Current zoning designation (R-1, C-2, M-1, etc.)
• Land Use Code — Classification of how the property is used
• Assessed Value — Value used for property tax calculations
• Lot Size / Acreage — Area of the parcel
• Year Built — Construction date for any improvements

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