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Real Estate and Mortgage Data for Your Site

Turn Your Site Into a Real Estate Portal With Zillow

The new Zillow API Network turns member sites into mini real estate portals by offering fresh and provocative real estate content to keep people coming back.

Home Valuation

Search results list, Zestimate®, Rent Zestimate®, home valuations, home valuation charts, comparable houses, and market trend charts.

API calls of interest:

  1. GetZestimate
  2. GetSearchResults
  3. GetChart
  4. GetComps

Property Details

Property-level data, including historical sales price and year, taxes, beds/baths, etc.

API calls of interest:

  1. GetDeepComps
  2. GetDeepSearchResults
  3. GetUpdatedPropertyDetails

Neighborhood Data

  • Neighborhood and city affordability statistics: Zillow Home Value Index, Zestimate distribution, median single family home and condo values, average tax rates, and percentage of flips.
  • Demographic data at the city and neighborhood level
  • Lists of counties, cities, ZIP codes, and neighborhoods, as well as latitude and longitude data for these areas so you can put them on a map.

API calls of interest

  1. GetDemographics
  2. GetRegionChildren
  3. GetRegionChart

Mortgage Rates

Current mortgage rates from Zillow Mortgage Marketplace broken down by state and loan type (30 year fixed, 15 year fixed, 5/1 ARM).

API calls of interest

  1. GetRateSummary

Mortgage Calculators

A full suite of mortgage and real estate calculators so you can add a full calculator section on your website.

API calls of interest

  1. GetMonthlyPayments - Simple mortgage payment calculator
  2. CalculateMonthlyPaymentsAdvanced - Advanced mortgage payment calculator
  3. CalculateAffordability

Zillow Neighborhood Boundaries

  • Neighborhood boundaries for nearly 7,000 neighborhoods and 150 cities.
  • Available via a Creative Commons license.

Get Started

  1. Read the Terms of Use to make sure your integration adheres to the fine print.
  2. Read the Developer Guide for your choice of API to get instructions for making Web Service calls.
  3. Get a Zillow Web Services ID (ZWSID). You must create a Zillow account to get the ZWSID.
  4. Start coding — be sure to use your ZWSID to make your API calls.

Some things you need to know...

The Zillow API Network is a free service. Network Member requirements are summarized below; for details please see our Terms of Use.

For all APIs

  • Limit queries to 1,000 per day, per API. If you think you need more, Please request a higher call limit by filling out a request form
  • Provide a Web-based user interface directly to consumers for their personal use (no caching or data storage)
  • Include Zillow text, images, and links in all API input and output elements
  • Make Zillow technology available for free to customers, without registration
  • The license is only valid for use on a Member Web site; special permissions are required for uses such as Yahoo widgets
  • Adhere to all Zillow API Network Terms of Use
  • Notify Zillow of any breach of terms and help resolve them

Specific to Property Details API

  • Each consumer-facing provider must have its own ZWSID
  • Implement anti-scraping measures

Your Site to Zillow and Back Again

You can see below how Zillow exposes data through its various API calls. (For example, in order to get a Chart, enter the address in the GetSearchResults API and then use the returned ZPID to call the GetCharts API.) Click on the links to see Developer Guides for specific API calls.

API flow diagram