Douglas Elliman website screenshot

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.

Douglas Elliman is profiled on the APIs.io network. Tagged areas include Real-Estate, United States, Brokerage, Property Listings, and MLS.

Douglas Elliman’s developer surface includes engineering blog and 20 more developer resources.

11.7/100 emerging ▬ flat Agent 0/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
0 APIs
Real-EstateUnited StatesBrokerageProperty ListingsMLSIDXRESORentalsCommercial Real EstateProperty ManagementTitleEscrowPropTechLuxury Real EstateNew Development

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime (on an ambiguous tag, where no other regime matched), so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/douglas-elliman: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Security Posture 1

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

Douglas Elliman Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 1

Authentication, authorization, and security posture

Operate 1

Status, limits, changes, and where to get help

Commercial 2

Pricing, plans, and the legal terms of use

Company 9

The organization behind the API

Scroll for all 9

Other 3

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: douglas-elliman
url: https://raw.githubusercontent.com/api-evangelist/douglas-elliman/refs/heads/main/apis.yml
name: Douglas Elliman
kind: company
description: '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.'
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: No published developer access
  confidence: high
  source: []
  generated: '2026-07-26'
  method: probed
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/douglas-elliman.png
tags:
- Real-Estate
- United States
- Brokerage
- Property Listings
- MLS
- IDX
- RESO
- Rentals
- Commercial Real Estate
- Property Management
- Title
- Escrow
- PropTech
- Luxury Real Estate
- New Development
tags_raw:
- Real Estate
- United States
- Brokerage
- Property Listings
- MLS
- IDX
- RESO
- Rentals
- Commercial Real Estate
- Property Management
- Title
- Escrow
- PropTech
- Luxury Real Estate
- New Development
created: '2026-07-26'
modified: '2026-07-26'
specificationVersion: '0.23'
apis: []
common:
- type: DomainSecurity
  url: security/douglas-elliman-domain-security.yml
- type: Website
  url: https://www.elliman.com/
- type: About
  url: https://www.elliman.com/about-us
- type: InvestorRelations
  url: https://investors.elliman.com/
- type: TermsOfService
  url: https://www.elliman.com/terms-of-service
- type: PrivacyPolicy
  url: https://www.elliman.com/privacy-policy
- type: SiteMap
  url: https://www.elliman.com/site-map
- type: Press
  url: https://www.elliman.com/press-news
- type: Careers
  url: https://www.elliman.com/careers
- type: Research
  url: https://www.elliman.com/corporate-resources/market-reports
- type: Research
  url: https://www.elliman.com/corporate-resources/research-reports
- type: Guides
  url: https://www.elliman.com/sellers-buyers-renters-guides
  note: Consumer buyer/seller/renter guides. Retyped from Documentation in the 2026-07-26 enrichment round — these are not
    API documentation and Douglas Elliman publishes none.
- type: Blog
  url: https://www.elliman.com/insider
- type: Contact
  url: https://www.elliman.com/offices
- type: Conformance
  url: conformance/douglas-elliman-conformance.yml
- type: Lifecycle
  url: lifecycle/douglas-elliman-lifecycle.yml
- type: LLMsTxt
  url: llms/douglas-elliman-llms.txt
- type: GitHubOrganization
  url: https://github.com/DouglasElliman
- type: LinkedIn
  url: https://www.linkedin.com/company/douglaselliman/
- type: Facebook
  url: https://www.facebook.com/DouglasElliman
- type: Instagram
  url: https://www.instagram.com/douglaselliman/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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