What are the best RentCast alternatives for property data?

Pick RentCast if rent estimates (rental AVM) or active sale and rental listing search are core to your product — Realie offers neither. RentCast’s developer docs (checked 2026-11-03) also cover value estimates, comparables, market aggregates, 150+ million property records, and 500,000+ daily property record and listing updates.

RentCast publishes transparent developer tiers: Developer $0/mo (50 requests, $0.20 overage); Foundation $74/mo (1,000, $0.06); Growth $199/mo (5,000, $0.03); Scale $449/mo (25,000, $0.015). Month-to-month, no long-term contract. $/request on paid tiers: Foundation $0.074/request; Growth $0.0398; Scale $0.0180 — overages published separately. Published on rentcast.io/api (checked 2026-11-03); verify with RentCast. Month-to-month changes from the API dashboard per RentCast’s billing guidance on their developer site.

RentCast latency: Not in Sept 2026 Realie vs ATTOM study — verify independently. RentCast also markets an MCP server for connecting its API to AI agents and code editors (rentcast.io/api).

Choose Realie when you need normalized county public records — parcel geometry, owner of record, mailing address, assessment, tax, sale history, mortgages, liens, and zoning — 180M+ addresses · nationwide U.S. county coverage, without buying RentCast requests primarily for rent estimates or listings. Free (25 tokens/mo), $50 (1,250 tokens), $150 (6,000 tokens), $350 (30,000 tokens). Month-to-month; same endpoints on every tier; allowance shared Platform + API. 1 token = one successful API call (HTTP 200); 404/401/403 = 0. Allowance shared Platform + API. Search endpoints (property/search, location, owner): limit max 100, paginate with cursor — one 200 = 1 token whether the page has 1 or 100 properties. address/parcelId = 1 property per token. Overage: $0.15 / $0.05 / $0.025 / $0.012 on Free / $50 / $150 / $350 (realie.ai/pricing). Query via MCP, CLI, or REST on self-serve keys.

Realie does not return rent estimates or active sale and rental listings. Owner search by name is available for portfolio research; Realie is not a consumer reporting agency and is not for FCRA-regulated credit, insurance eligibility, employment, or tenant screening.

ATTOM — Nationwide warehouse and enterprise licensing; Basic Property API plans from $500/month, Premium via sales (ATTOM pricing page). In Realie’s September 2026 benchmark, ATTOM Basic Profile averaged 232.6 ms mean (separate from Realie’s published average).

BatchData — Property Data plus skip-trace/contact lines; Property Data: Growth $1,000/mo (100k records), Professional $2,500 (300k), Scale $5,000 (750k), Enterprise $10,000 (3M). Growth $0.010/record; Professional ~$0.0083; Scale ~$0.0067; Enterprise ~$0.0033 — floor $1,000/mo. Verify on batchdata.io/pricing (Property Data tab); skip-trace is a separate product line.

Regrid — Parcel boundaries and GIS; self-serve API plan pricing: verify with Regrid. Regrid publishes enterprise licensing above 10,000 records/mo (regrid.com/api).

Cotality (CoreLogic) — Sales/enterprise U.S. property data API — verify pricing and latency with Cotality.

We do not score vendors subjectively. Each alternative is evaluated on published, quantifiable signals you can re-check on vendor sites:

1. Volume-normalized monthly cost at 100,000 properties per month — one row per vendor, cheapest published plan that covers that volume (Cheapest published plan that covers this volume; verify on vendor sites.)

2. Self-serve monthly floor and included quota on that cheapest covering plan (or “contact sales” when not published)

3. MCP and CLI access — Realie offers MCP and CLI on self-serve accounts. ATTOM, RentCast, Regrid, and BatchData also market MCP servers, but access terms differ (BatchData lists its MCP Server under Enterprise & Custom Solutions with custom pricing on batchdata.io/pricing), so compare auth model, plan requirements, and per-call cost (verify on vendor docs)

4. Latency where published: Realie ~20 ms average (docs.realie.ai); ATTOM mean 232.6 ms only from Realie’s September 2026 benchmark (blog.realie.ai, linked under Sources) — no other competitor millisecond claims

5. Primary dataset fit — county assessor/recorder public records vs listings, AVM/rent estimates, skip-trace, or enterprise bundles — matched to your required field list

Each vendor bills different units (tokens, records, API reports, calls). Compare monthly floor and volume scenarios — not a single mixed $/unit column. Verify competitor pricing before budgeting. One row per vendor — cheapest published plan that covers 100k properties/mo. The RentCast and Realie rows each show two call patterns. RentCast’s /properties search returns up to 500 records per request and bills each successful request as one, so a 100,000-property pull is ~200 requests — about $30/mo on the Developer plan with $0.20 overage (Foundation is $74/mo for 1,000 requests); 100,000 single-property requests use Scale ($449, 25,000 included) plus 75,000 × $0.015 overage = $1,574/mo. Realie: ~1,000 tokens via search pagination at limit=100 fits Tier 1 ($50/mo), while 100,000 single address/parcelId lookups use 100,000 tokens — Tier 3 ($350, 30,000 included) plus 70,000 × $0.012 overage = $1,190/mo.

1 token = one successful API call (HTTP 200); 404/401/403 = 0. Allowance shared Platform + API. Search endpoints (property/search, location, owner): limit max 100, paginate with cursor — one 200 = 1 token whether the page has 1 or 100 properties. address/parcelId = 1 property per token. Overage: $0.15 / $0.05 / $0.025 / $0.012 on Free / $50 / $150 / $350 (realie.ai/pricing).