Douglas Elliman

Douglas Elliman Inc. (NYSE: DOUG) is a residential real estate brokerage founded in 1911 and headquartered at 575 Madison Avenue, New York City. It is one of the largest brokerages in the New York metropolitan area and among the largest in the United States, with roughly 6,000 agents across New York, Florida, California, Texas, Colorado, Massachusetts, Connecticut, Nevada, New Jersey, Vermont, the Mid-Atlantic, and international outposts in France and Monaco. Its home market is the United States. In the value chain Douglas Elliman sits on the SELL side as a licensed brokerage and MLS participant — it consumes MLS listing data under IDX and broker agreements rather than originating a syndicated feed — and it extends into development marketing, property management, commercial brokerage, title and escrow (Douglas Elliman Title), relocation, and PropTech venture investment through New Valley Ventures. Its API posture is honest and thin: no developer portal, no published API documentation, no OpenAPI or OData $metadata contract, and no published access path of any kind. developer.elliman.com, developers.elliman.com, and docs.elliman.com all resolve to the marketing homepage via a wildcard catch-all rather than to a portal, and api.elliman.com exists as an IIS/ASP.NET host that returns HTTP 403 at its root with no documentation behind it. On RESO, Douglas Elliman Real Estate is listed as a Class D member (Brokers, Agents and Appraisers) on the RESO membership roster but does NOT appear in the RESO certified-organizations directory — it is a RESO member, not a RESO-certified data provider, and it publishes no Web API or Data Dictionary certification, no OData endpoint, and no UPI surface. The single public engineering artifact the company ships is a GitHub fork of a third-party .NET RETS client library, which is consumer-side evidence that Elliman pulls MLS data in rather than producer-side evidence that it exposes any.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

How we profile Douglas Elliman

Each block below is one kind of artifact we hold for Douglas Elliman. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Douglas Elliman Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Every other property we hold for Douglas Elliman — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

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