Zillow Real Estate Data API
Extract structured property listings from Zillow — price, Zestimate, bed/bath count, and listing status — for real estate market analysis, investment screening, or a property search product of your own.
How the Zillow Real Estate Data API Workflow Works
Submit a Zillow listing or search-results URL and AlterLab renders the full page (Zillow's listing data loads via client-side JavaScript, including the Zestimate widget) and returns structured fields: list price, Zestimate, price history entries, days on market, and property characteristics. For market-wide analysis, crawl a search-results URL filtered to a ZIP code or neighborhood boundary to enumerate all active listings in that area, then re-check each listing periodically to track price changes and detect when a listing goes pending or sells.
Recommended Tier & Cost
Zillow's listing details and Zestimate values are populated via JavaScript after initial page load, and the site applies rate limiting on repeated access — full browser rendering is required to reliably retrieve complete listing data.
Sample Output
{
"zpid": "2126956255",
"url": "https://www.zillow.com/homedetails/2126956255_zpid/",
"address": "123 Example St, Austin, TX 78701",
"price": { "list": 549000, "zestimate": 561200 },
"property": { "beds": 3, "baths": 2, "sqft": 1840, "year_built": 2015 },
"status": "For Sale",
"days_on_market": 12,
"price_history": [
{ "date": "2026-06-01", "event": "Listed", "price": 549000 }
]
}Need an API key? — no credit card required.
Responsible Use
AlterLab is designed for extracting publicly available data. Always review the terms of service for Zillow, respect robots.txt directives, and ensure your use case complies with applicable laws in your jurisdiction. Do not use this service to access non-public, authenticated, or personally identifiable data without appropriate authorization.
Quick Start
# Always verify Zillow's robots.txt and terms of service before extracting data.
curl -X POST https://alterlab.io/api/v1/scrape \
-H "X-API-Key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"url": "https://www.zillow.com/homedetails/123-main-st/12345_zpid/",
"advanced": { "render_js": true }
}'Frequently Asked Questions
Can I pull Zillow's Zestimate value specifically?
Yes — the Zestimate is included alongside the list price in the structured response for any individual property page, since both render in the same client-side widget.
Can I track all listings in a specific neighborhood?
Point a crawl job at a Zillow search-results URL scoped to your target area (ZIP code, neighborhood, or map boundary) and AlterLab enumerates and scrapes each active listing found on that search.
How do I detect when a listing goes pending or sells?
Re-scrape the same listing URL on a schedule and watch the status field — it transitions from 'For Sale' to 'Pending' to 'Sold', which is the standard signal for tracking market velocity in a given area.
Related Guides
Developer Scraping Resources
How to Scrape Zillow Data: Complete Guide
Step-by-step tutorial with Python and Node.js code examples, structured extraction, and cost breakdown for Zillow scraping.
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All 6 detection layers explained: TLS fingerprinting, JS challenges, Turnstile, and more.
JavaScript Rendering API
Full browser rendering for SPAs, React, and dynamic content.
Python Web Scraping API
pip install alterlab — async-ready Python SDK with 5,000 free scrapes.
Pricing
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Your first scrape.
Sixty seconds.
$1 free credit — up to 5,000 scrapes. No credit card.
Just a POST request.
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