The Zestimate API allows users to retrieve current Property, Rental and Foreclosure Zestimates for ~100 million properties in the US.

This resource is really for commercial use cases by businesses. For research and academic projects, we provide the following metrics that have a looser Terms of Use, as far as storing and manipulating the data – https://www.zillow.com/research/data/

You can download metrics at several levels by region.

Documentation URL https://bridgedataoutput.com/docs/platform/#zestimates
Authentication Model Password and access token authentication
Architectural Style RESTful
Supported Request Formats URI Query String
Supported Response Formats JSON
Agreement Type TOS