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Zillapi

REST API for Zillow-sourced U.S. property data — 300+ fields per home in one call.

Free Tier Data & Analytics AI & Automation

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Starting Price

$5/month (1,000 credits)

Best For

Developers, Proptech Product Teams, Data Analysts, AI Agent Builders, Investors

Company Size

Solo, Small, Mid-Market

Deployment

Cloud, API

Property Types

Residential, Multifamily

About Zillapi

Zillapi is a REST API that returns Zillow-sourced U.S. property data for developers and AI agents: price, Zestimate, rent estimate, photos, schools, taxes, agent contact, and full price history — 300+ typed fields across a stated 160M+ U.S. parcels in a single call. It offers nine sub-resources (such as /zestimate, /nearby comps, and /price-history), geo search by bounding box with filters, address- or zpid-based lookups, and JSON, CSV, and NDJSON output with HMAC-signed webhooks for async jobs. The service ships an OpenAPI 3.1 spec, llms.txt files, and MCP-readiness for use with Claude, ChatGPT, Cursor, LangChain, and workflow tools like Zapier and n8n. Pricing is credit-based: a free tier with 100 credits and no card, $5/month for 1,000 credits, or $54/year for 12,000 credits, with most calls costing 1 credit per record. Zillapi states it is an independent service not affiliated with or endorsed by Zillow Group.

✓ Pros

✓Free tier with no credit card and very low published entry pricing

✓OpenAPI 3.1 spec plus AI-agent tooling (llms.txt, MCP-ready) out of the box

✓Multiple output formats and sub-resources avoid pulling full records unnecessarily

✓Failed calls are free and pricing is transparently documented per endpoint

✗ Cons

✗Independent wrapper not affiliated with Zillow — upstream data access could change

✗Residential-focused data (homes, Zestimates); limited coverage for pure commercial assets

✗Early-access product with limited track record

Who This Is For

Roles

DevelopersProptech Product TeamsData AnalystsAI Agent BuildersInvestors

Company Size

SoloSmallMid-Market

Property Types

ResidentialMultifamily

Zillapi Features

✦ Full Property Records 300+ typed fields per property: address, price, Zestimate, rent estimate, beds/baths, lot size, taxes, schools, agent contact, photos, and price history.

✦ Sub-Resources & Field Projection Nine sub-resources (zestimate, nearby comps, price history, photos, schools) and ?fields= projection to slim payloads.

✦ Geo & URL Search Bounding-box search with price/beds/baths/sqft/type filters, or paste a Zillow search URL; async jobs with signed webhooks.

✦ OpenAPI 3.1 Spec Stable v1 REST contract that drops into Postman, Cursor, and code generators.

✦ AI-Agent Ready Function-call-ready spec, llms.txt/llms-full.txt, and MCP readiness for Claude, ChatGPT, and LangChain.

✦ Multiple Output Formats JSON, CSV, and NDJSON output for pipelines including Google Sheets, BigQuery, and Snowflake.

Zillapi Pricing

Last verified 2026-08

Credit-based subscription with free tier Free Tier Available

Free

100 credits at signup, no credit card, no top-ups.

Monthly

$5/month

1,000 credits/month; top-ups at $4 per 1,000 credits.

Annual

$54/year

12,000 credits/year released 1,000/month; top-ups at $3 per 1,000 credits.

Zillapi FAQ

How much does Zillapi cost?

Zillapi pricing starts at $5/month (1,000 credits). A free tier is available.

Who is Zillapi for?

Zillapi is built for Developers, Proptech Product Teams, Data Analysts, AI Agent Builders, Investors, working with residential, multifamily properties.

What are alternatives to Zillapi?

Popular data & analytics alternatives include Alteryx, Altus Group, Bisnow.

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