Property Data API Without Subscription

Look up valuations, rents, and comparables with RentCast pay-per-request — no $79+/month data plan for occasional lookups.

How do I get property data without a data subscription?

Short answer: query RentCast through Locus and pay per lookup from one balance. Property-data plans start around $79/month whether you analyze 10 deals or 1,000. If you underwrite a handful of properties a month, paying per lookup costs a few dollars instead of a recurring plan.

What property data can I get pay-per-use?

Valuations and estimates

Get automated value estimates and valuation ranges for any US address to sanity-check asking prices.

Rent estimates

Pull long-term and short-term rent estimates to underwrite buy-and-hold and rental deals.

Comparables and listings

Find nearby comparables, active listings, and sale history to ground every offer in real comps.

Location context

Add Mapbox geocoding and OpenWeather climate context to round out a property brief.

Why investors fit pay-per-request

•Deal-based usage — You analyze properties when deals appear — a few lookups per deal, then nothing. Plans charge between deals too.
•Side-project friendly — Testing an investor tool or building a search agent should cost dollars in data, not a plan signup.
•Agent underwriting — An AI agent that pulls valuation, rents, and comps into a deal memo pays per lookup inside the workflow.

Underwrite a deal for under a dollar

A typical flow: valuation plus rent estimate plus a handful of comparables for the subject property, summarized by an LLM into a one-page memo. A few lookups per deal at catalog per-request prices keeps the data cost far below the value of one avoided bad offer.

Related resources

Frequently asked questions

How do I look up a home value without a data subscription?

Query RentCast by address through Locus and pay per lookup — a handful of properties a month costs a few dollars, not a $79 plan.

What data do I need to underwrite a rental property?

An automated valuation, a rent estimate, and nearby comparables — all available per-request and enough for a first-pass decision.

Can an agent write the investment memo?

Yes. Pull valuation, rents, and comps through Locus, then summarize them with an LLM into a one-page deal memo.

Look up property data pay-per-use View data endpoints