Get rent estimates for US properties with comparable rental data via pay-per-call MPP.
What it does
The RentCast Rent Estimate endpoint provides automated rent estimates for US residential properties. It is part of a broader RentCast suite served through the Locus MPP (Micropayment Protocol) gateway, which also includes property records, AVM valuations, sale/rental listings, and market statistics.
This specific endpoint accepts a POST request with property details such as address (or latitude/longitude), property type, bedrooms, bathrooms, square footage, and comparable-search parameters (maxRadius, daysOld, compCount). It returns a rent estimate along with comparable rental properties used to derive the estimate. The compCount parameter controls how many comparables are returned (5–25, default 15).
Payment is handled via the MPP protocol using the Tempo settlement method. Each call costs 33,000 base units of pathUSD (6 decimals), which equals $0.033 per request. The intent is "charge", meaning each call is a one-shot payment. Note that the probe returned 404 on HEAD and GET methods — this endpoint requires POST, which is consistent with the OpenAPI spec. No response schema is documented in the OpenAPI definition, so the exact shape of the returned rent estimate data must be inferred from the upstream RentCast API documentation.
Capabilities
Use cases
- —Estimating fair market rent for a specific US residential property before listing
- —Comparing rental prices across comparable properties in a neighborhood
- —Automating rent analysis in a real estate investment underwriting pipeline
- —Providing rent estimates in a tenant-facing property search application
- —Feeding rent data into portfolio analytics for landlords or property managers
Fit
Best for
- —Real estate investors needing quick per-property rent estimates
- —Agents and AI workflows that need programmatic, pay-per-call rent data without subscriptions
- —Developers building US rental market analysis tools
Not for
- —International (non-US) property rent estimation
- —Bulk historical rent trend analysis (the market statistics endpoint is better suited for that)
- —Commercial or industrial property rent estimation
Quick start
curl -X POST https://rentcast.mpp.paywithlocus.com/rentcast/rent-estimate \
-H "Content-Type: application/json" \
-H "Authorization: <MPP-TEMPO-PAYMENT-HEADER>" \
-d '{"address": "5500 Grand Lake Dr, San Antonio, TX 78244", "propertyType": "Single Family", "bedrooms": 3, "bathrooms": 2, "compCount": 10}'Example
Request
{
"address": "5500 Grand Lake Dr, San Antonio, TX 78244",
"daysOld": 180,
"bedrooms": 3,
"bathrooms": 2,
"compCount": 10,
"maxRadius": 5,
"propertyType": "Single Family",
"squareFootage": 1500
}Endpoint
Quality
The OpenAPI spec provides a clear request schema and pricing for this endpoint, but no response schema or example responses are documented. The probe did not capture a 402 challenge directly on this path (HEAD/GET returned 404, which is expected since the endpoint is POST-only). No crawl content was available beyond 404 error pages. Upstream RentCast docs are referenced but not crawled.
Warnings
- —No response schema documented in the OpenAPI spec — the shape of the rent estimate response is unknown from this source alone.
- —Probe returned 404 on HEAD/GET; the endpoint requires POST per the OpenAPI spec, so liveness via POST could not be confirmed by the probe.
- —Currency address 0x20c000000000000000000000b9537d11c60e8b50 is assumed to be pathUSD with 6 decimals based on the Tempo settlement method; if this assumption is wrong, the $0.033 price may be inaccurate.
- —No crawled documentation was available from the gateway; all non-endpoint paths return 404.
Citations
- —The rent-estimate endpoint accepts POST with address, propertyType, bedrooms, bathrooms, squareFootage, maxRadius, daysOld, compCount parametershttps://rentcast.mpp.paywithlocus.com
- —Each call costs 33,000 base units via Tempo settlement method with intent 'charge'https://rentcast.mpp.paywithlocus.com
- —RentCast provides US real estate intelligence including property records, AVM valuations, rent estimates, sale/rental listings, and market statisticshttps://rentcast.mpp.paywithlocus.com
- —Upstream API reference is available at developers.rentcast.iohttps://developers.rentcast.io/reference/introduction
- —LLM-oriented docs are referenced at beta.paywithlocus.com/mpp/rentcast.mdhttps://beta.paywithlocus.com/mpp/rentcast.md