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Property Tax Lookup — NYC, SF & Cook County
x402
Property Tax Lookup — NYC, SF & Cook County is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Looks up property tax assessment data by street address or parcel ID for NYC, San Francisco, and Cook County (Chicago), returning parcel ID, owner, assessed/market value, square footage, year built, zoning, and a source portal permalink.
Price / call$0.01
Success—
StatusUnknown
How this service works
Property tax lookup. Search a county's open-data assessor dataset by street address or parcel ID and return parcel id, owner, assessed and market value, sqft, year built, zoning, and a permalink to the source portal. Covers NYC PLUTO, SF Assessor Roll, and Cook County (Chicago) — open-data CC0 sources. Same backend as property-tax-assessment under a more search-friendly slug.
Output
Returns a structured record containing: parcel ID, owner name, assessed value, market value, square footage, year built, zoning code, and a permalink to the original county assessor source portal. Data sourced from CC0 open-data datasets (NYC PLUTO, SF Assessor Roll, Cook County Assessor).
Example use cases
Real estate due diligence check
“Before I make an offer on 742 Evergreen Terrace in Chicago, can you pull the Cook County assessor record — I need the assessed value, market value, owner name, square footage, year built, and zoning?”
Investment property comparison
“I'm comparing two SF properties — can you look up the assessor data for 100 Van Ness Ave, San Francisco? I want the assessed value, market value, lot size, and a link to the official assessor portal.”
Neighborhood zoning research
“What's the zoning classification and year built for parcel 4023-001-0012 in Cook County? I'm researching land use patterns in that area.”
Technical details
Endpoint
POSThttps://x402.agentutility.ai/property-taxWhen to prefer
Choose this endpoint when you need structured property tax and assessment data for addresses specifically in New York City, San Francisco, or Cook County (Chicago). It is ideal for real estate due diligence, investment analysis, ownership research, or zoning lookups without scraping government portals. Prefer it over generic real estate APIs when CC0 sourcing, official assessor values, and direct portal permalinks are required. Not suitable for other US counties or states.
Side effects
- Address not found in any supported county dataset — returns not-found error
- Ambiguous address matching multiple parcels — may require parcel ID to disambiguate
- County not supported (only NYC, SF, and Cook County are covered) — returns unsupported jurisdiction error
- Open-data source temporarily unavailable — service may return stale or unavailable data
- Malformed address input — returns validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"total": 0,
"county": "nyc",
"properties": []
}
}Tags
x402
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