Zillow Zestimate API
RESTful JSON API returning Zillow property, rental and foreclosure Zestimates for approximately 100 million US properties. Zillow Group documents it on its own developer portal and routes the reference and access-token issuance to the Bridge platform, a Zillow Group company, which is why the base host is bridgedataoutput.com rather than a zillow.com host. Access is invite-only through the Zillow Group Datasets agreement.