Property ownership, resident details, and tax data by address via Whitepages — $0.44/request
What it does
The Whitepages Property Search endpoint on StableEnrich returns property ownership, resident information, and property details for a given US street address. It is a POST endpoint at `https://stableenrich.dev/api/whitepages/property-search` that accepts a JSON body with `street` (required), `city`, `state_code` (two-letter abbreviation), and `zipcode`. The response includes property address, mailing address, geolocation, ownership info (person and business owners with contact details), current residents (with phones and emails), property details (year built, bedrooms, bathrooms, lot size, building type, pool, HVAC, etc.), estimated market value with range, sale history, and tax assessment info.
Pricing is $0.44 per request, payable via x402 or MPP (Tempo method with pathUSD). No API keys or subscriptions are required — payment serves as authentication. The endpoint is part of StableEnrich, a pay-per-request gateway operated by Merit Systems that aggregates multiple data providers behind a single micropayment interface. Payments settle on Base mainnet (eip155:8453), Solana, or Tempo.
Important: the state field must be named `state_code`, not `state`. Using `state` will cause the parameter to be silently ignored. The endpoint supports an `excludeFields` parameter to reduce response size by omitting specific fields via dot-notation paths.
Capabilities
Use cases
- —Look up property ownership and resident details for a given US address
- —Retrieve estimated market value and sale history for real estate due diligence
- —Identify current residents and their contact information at a property
- —Pull property characteristics (bedrooms, bathrooms, lot size, year built) for underwriting or appraisal
- —Verify owner-occupancy status by comparing ownership and mailing addresses
Fit
Best for
- —AI agents performing real estate research without API key management
- —One-off property lookups where subscription pricing is wasteful
- —Automated due diligence pipelines that need ownership and valuation data
- —Lead enrichment workflows that need resident contact info at an address
Not for
- —Bulk property data pulls across thousands of addresses (at $0.44/request, costs add up quickly)
- —International property lookups (US addresses only based on state_code requirement)
- —Real-time MLS listing data or active for-sale inventory
Quick start
POST https://stableenrich.dev/api/whitepages/property-search
Content-Type: application/json
{
"street": "123 Main St",
"city": "San Francisco",
"state_code": "CA"
}Example
Request
{
"city": "San Francisco",
"street": "123 Main St",
"state_code": "CA"
}Response
{
"result": {
"apn": "1234-567-890",
"tax_info": {
"tax_year": 2024,
"tax_amount": 11400,
"assessed_value": 950000
},
"residents": [
{
"name": "Jane Doe",
"phones": [
{
"number": "415-555-1234"
}
]
}
],
"geolocation": {
"lat": 37.7749,
"lng": -122.4194
},
"property_id": "prop_abc123",
"market_value": {
"estimated_value": 1250000,
"estimated_value_range_low": 1100000,
"estimated_value_range_high": 1400000
},
"ownership_info": {
"owner_type": "person",
"person_owners": [
{
"name": "Jane Doe",
"emails": [
{
"email": "jane@example.com"
}
],
"phones": [
{
"type": "mobile",
"number": "415-555-1234"
}
]
}
]
},
"property_address": {
"zip": "94105",
"city": "San Francisco",
"state": "CA",
"full_address": "123 Main St, San Francisco, CA 94105"
},
"property_details": {
"bedrooms": 3,
"lot_size": 2500,
"bathrooms": 2,
"year_built": 1920,
"property_use": "Single Family",
"building_area": 1800
}
}
}Endpoint
Quality
Full OpenAPI schema with detailed request/response types, clear pricing ($0.44/request), comprehensive documentation in guidance, and the endpoint is part of a live StableEnrich deployment (root returns 200). The probe returned 405 because property-search is POST-only and was probed with HEAD/GET, not because it's down. No actual 402 challenge was captured for this specific endpoint, slightly reducing confidence.
Warnings
- —Probe returned 405 because HEAD/GET were tried on a POST-only endpoint — not an indication the endpoint is down
- —The state parameter MUST be named state_code (not state) or it will be silently ignored
- —US addresses only — no international property data
- —Response example is illustrative; actual field population depends on data availability for the queried address
- —This endpoint handles personally identifiable information (PII) — ensure compliance with applicable privacy regulations
Citations
- —Property search endpoint price is $0.44 per requesthttps://stableenrich.dev
- —The state parameter must be named state_code with a two-letter abbreviationhttps://stableenrich.dev
- —Payments are processed on Base mainnet (eip155:8453), Solana, or Tempohttps://stableenrich.dev/docs
- —All endpoints require micropayment via x402 or MPP protocolhttps://stableenrich.dev/docs
- —StableEnrich is operated by Merit Systemshttps://stableenrich.dev