Understand Zillow data access realities and use Bridge Interactive for MLS data

Steps

1. Recognize that Zillow does not offer a public API for listing data; the Zillow API program that existed historically was shut down — any current Zillow integration requires a formal partnership agreement.
2. For agent/broker use cases, evaluate Bridge Interactive (a Zillow-owned platform) which provides RESO-compliant MLS data feeds under separate licensing with participating MLSs.
3. Apply for Bridge Interactive API access through the MLS or through Bridge directly; approval is MLS-specific and requires broker or agent affiliation.
4. Once credentialed, use Bridge's RESO Web API endpoints (OData-based) identically to other RESO-compliant servers — see the RESO Web API query route for implementation details.
5. For Zestimate-like AVM data, use ATTOM, CoreLogic, or HouseCanary APIs instead, as Zillow does not expose Zestimate values via API to third parties.
6. For public-facing consumer apps requiring broad listing coverage, consider aggregators like Estated or direct MLS IDX/RESO agreements.