Five small, sharp utilities for the parts of public-notice work that waste an afternoon. Buffer-and-mail. List-and-print. Parcel-and-verify. Address-to-APN. And a directory of every county's parcel REST URL. They run in the browser. Nothing leaves your machine.
Drop a parcel GeoJSON, plant an address. Every owner inside the buffer ring is selected, deduplicated, and ready to print.
Bring your own list. Map columns once, dedupe, walk away with a print-aligned PDF. 30 labels per sheet. No realignment math.
Paste any county's ArcGIS REST URL. The tool inspects the layer, learns its fields, and lets you query property records the way the assessor stored them. No signup, no proxy.
A directory of US county parcel ArcGIS REST endpoints. Find your county's URL, see supported search fields, and open it in Parcel Lookup with one click. Crowdsourced and verified.
Type a U.S. street address. The U.S. Census Geocoder pins it to a state and county; if your county is indexed, you go straight to Parcel Lookup with the REST URL pre-filled. Get to your APN in one hop.
The five tools above run in your browser. The Parcel Atlas MCP server runs in your agent — point Claude, Cursor, or any MCP client at one endpoint and let it resolve addresses, geocode counties, and pull county REST URLs. Six tools, no API key, public read-only.
| Task | Radius | CSV → Labels | Parcel Lookup | REST Atlas |
|---|---|---|---|---|
| Find property owners within a distance of a project | — | — | — | |
| Print Avery 5160 labels from a spreadsheet | — | — | — | |
| Look up a specific parcel by APN or address | — | — | — | |
| Generate a mailing list from parcel GeoJSON data | — | — | — | |
| Deduplicate an existing address list | — | — | ||
| Search county GIS records by owner name | — | — | — | |
| Export a CSV of affected property owners | — | — | ||
| Check zoning or assessed value for a property | — | — | — | |
| Find my county's parcel REST API URL | — | — | — | |
| Browse a directory of county GIS endpoints | — | — | — |
Most users hit one of these three paths. They're built to compose.
Background reading on GeoJSON, APNs, ArcGIS, and the bureaucratic edges these tools sit beside.