Zillow Group website screenshot

Zillow Group

Zillow Group is a leading real estate and rental marketplace that aims to make the process of buying, selling, and renting homes more streamlined and efficient. The company offers a wide range of services, including an online platform where users can search for properties, view listings, and connect with real estate agents. Zillow Group also provides tools and resources for homeowners, such as Zestimate, an automated valuation model that estimates the market value of a property.

Zillow Group publishes 17 APIs on the APIs.io network. Tagged areas include Real-Estate, Property Data, MLS, Mortgage, and Rentals.

The Zillow Group catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Zillow Group’s developer surface includes engineering blog, documentation, API reference, authentication, support, and 17 more developer resources.

41.3/100 developing ▬ flat Agent 22/100 agent aware saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0
AccessApproval
17 APIs
Real-EstateProperty DataMLSMortgageRentalsValuationHousing DataTransaction Management

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0
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.
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/zillow-group: 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 →

APIs 17

Individual APIs this provider publishes, each with its own machine-readable definition.

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 ...

Zillow Public Records API

RESTful JSON API over parcel, assessment and transaction records covering roughly 148 million properties across about 3,200 US counties, with around 15 years of history. Documen...

Zillow Group MLS Listings API

RESTful JSON listing API serving MLS and broker data normalized to the RESO Data Dictionary standard. Documented by Zillow Group and served through the Bridge platform, a Zillow...

Zillow Reviews API

Self-serve API for MLS and broker partners to be notified when a prospect creates a review, retrieve prospect reviews in bulk, and respond to them. Access tokens are issued from...

Zillow Agent Reviews API

Web-service API returning Zillow agent review data as JSON from URI query-string requests, authenticated with an API key issued on the Bridge dashboard. Governed by the Zillow D...

Mortech Rate Cloud API

Read-only mortgage pricing API from Mortech, a Zillow Group company, allowing online lead generators to submit loan criteria over HTTP POST and receive lender pricing back as JS...

Mortech Prospect Sync API

Read/write API from Mortech, a Zillow Group company, for sending and receiving updates on pricing activity for every prospect in the Mortech system. Requests are HTTP POST and r...

Mortech Prospect Trigger API

Mortech prospect trigger API, part of the Zillow Group mortgage developer program alongside Prospect Sync and Rate Cloud. Access is requested through the Zillow Group developer ...

Mortech Lead Posting API

Read/write API from Mortech, a Zillow Group company, allowing partners to submit prospect information for pricing and lead routing. Requests are HTTP POST and responses are XML,...

Mortech LOS Plug-In Integration API

Integration API from Mortech, a Zillow Group company, for connecting loan origination systems to Mortech pricing. Listed on the Zillow Group mortgage developer program with a re...

Zillow Lender Reviews API

API for accessing Zillow lender review data, listed under the Zillow Group mortgage developer program. Access is requested through the Zillow Group developer portal; no base URL...

Zillow Get Current Rates API

API for retrieving current mortgage rate data, listed under the Zillow Group mortgage developer program. Access is requested through the Zillow Group developer portal; no base U...

Zillow Rentals Lead API

Outbound webhook API that delivers Zillow Rentals lead information to a customer-supplied endpoint as URL-encoded HTTP POST callbacks. Zillow Group states the data format is fix...

Zillow Rentals Feed Integrations

Rental listing feed ingestion for property managers and rental software partners, documented under the Zillow Group rentals developer program. A feed-delivery integration rather...

dotloop Transaction Management API

RESTful JSON CRUD API for real-estate transaction management - loops, loop details, folders, documents, participants, tasks, activities, contacts and loop templates - secured wi...

Zillow Real Estate Metrics

Zillow housing market metrics - median home values, rents and inventory - published from the national level down to the neighborhood level. Despite being listed as an API on the...

Zillow Neighborhood Data

Aggregate neighborhood-level housing statistics from Zillow, listed on the Zillow Group developer portal but delivered as free CSV downloads through the Zillow Research data por...

Scroll for all 17

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

Zillow Group Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Security Posture 3

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

Zillow Group Authentication

4 schemes

SECURITY

Zillow Group Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 4

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: zillow-group
url: https://raw.githubusercontent.com/api-evangelist/zillow-group/refs/heads/main/apis.yml
common:
- type: Website
  url: https://www.zillowgroup.com/
- type: DomainSecurity
  url: security/zillow-group-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/zillow
- type: LinkedIn
  url: https://www.linkedin.com/company/zillow-group
- url: https://www.zillowgroup.com/feed/
  type: Blog
- type: DeveloperPortal
  url: https://www.zillowgroup.com/developers/
- type: Documentation
  url: https://www.zillowgroup.com/developers/
- type: APIReference
  url: https://bridgedataoutput.com/docs/platform
- type: Authentication
  url: authentication/zillow-group-authentication.yml
- type: Conventions
  url: conventions/zillow-group-conventions.yml
- type: Conformance
  url: conformance/zillow-group-conformance.yml
- type: Lifecycle
  url: lifecycle/zillow-group-lifecycle.yml
- type: Packages
  url: packages/zillow-group-packages.yml
- type: Plans
  url: plans/zillow-group-plans-pricing.yml
- type: RateLimits
  url: rate-limits/zillow-group-rate-limits.yml
- type: Webhooks
  url: asyncapi/zillow-group-webhooks.yml
- type: LLMsTxt
  url: llms/zillow-group-llms.txt
- type: VulnerabilityDisclosure
  url: security/zillow-group-vulnerability-disclosure.yml
- type: Security
  url: https://www.zillow.com/corporate/security-disclosure/
- type: TermsOfService
  url: https://www.zillow.com/corporate/terms-of-use/
- type: PrivacyPolicy
  url: https://www.zillow.com/corporate/zg-privacy-notice/
- type: Support
  url: https://help.zillowrentalmanager.com/hc/en-us
apis:
- aid: zillow-group:zestimates-api
  name: Zillow Zestimate API
  description: 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.
  humanURL: https://www.zillowgroup.com/developers/api/zestimate/zestimates-api/
  baseURL: https://api.bridgedataoutput.com/api/v2
  tags:
  - Valuation
  - Property Data
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/zestimate/zestimates-api/
  - type: APIReference
    url: https://bridgedataoutput.com/docs/platform/#zestimates
- aid: zillow-group:public-records-api
  name: Zillow Public Records API
  description: RESTful JSON API over parcel, assessment and transaction records covering roughly 148 million properties across
    about 3,200 US counties, with around 15 years of history. Documented by Zillow Group and served through the Bridge platform,
    a Zillow Group company. Invite-only, commercial use; academic users are directed to the free Zillow Research CSV downloads
    instead.
  humanURL: https://www.zillowgroup.com/developers/api/public-data/public-records-api/
  baseURL: https://api.bridgedataoutput.com/api/v2
  tags:
  - Public Records
  - Property Data
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/public-data/public-records-api/
  - type: APIReference
    url: https://bridgedataoutput.com/docs/platform/#parcels
- aid: zillow-group:mls-listings-api
  name: Zillow Group MLS Listings API
  description: RESTful JSON listing API serving MLS and broker data normalized to the RESO Data Dictionary standard. Documented
    by Zillow Group and served through the Bridge platform, a Zillow Group company. Access is invitation-only and granted
    by Zillow Group MLS partners in the US and Canada at their discretion.
  humanURL: https://www.zillowgroup.com/developers/api/mls-broker-data/mls-listings/
  baseURL: https://api.bridgedataoutput.com/api/v2
  tags:
  - MLS
  - Listings
  - RESO
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/mls-broker-data/mls-listings/
  - type: APIReference
    url: https://bridgedataoutput.com/docs/platform
  - type: Documentation
    url: https://bridgedataoutput.com/docs/explorer/reso-web-api
- aid: zillow-group:reviews-api
  name: Zillow Reviews API
  description: Self-serve API for MLS and broker partners to be notified when a prospect creates a review, retrieve prospect
    reviews in bulk, and respond to them. Access tokens are issued from the Bridge dashboard under Data Access > API Access
    Tokens. Zillow Group states it is unable to assist with implementation questions for this API.
  humanURL: https://www.zillowgroup.com/developers/api/mls-broker-data/reviews-api/
  baseURL: https://api.bridgedataoutput.com/api/v2
  tags:
  - Reviews
  - Agents
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/mls-broker-data/reviews-api/
  - type: APIReference
    url: https://bridgedataoutput.com/docs/platform
  - type: SignUp
    url: https://bridgedataoutput.com/register
- aid: zillow-group:agent-reviews-api
  name: Zillow Agent Reviews API
  description: Web-service API returning Zillow agent review data as JSON from URI query-string requests, authenticated with
    an API key issued on the Bridge dashboard. Governed by the Zillow Data Terms of Use with branding requirements attached
    to display of the reviews.
  humanURL: https://www.zillowgroup.com/developers/api/agents/agent-reviews/
  baseURL: https://api.bridgedataoutput.com/api/v2
  tags:
  - Reviews
  - Agents
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/agents/agent-reviews/
  - type: APIReference
    url: https://bridgedataoutput.com/docs/platform/API/zg-data#agent-reviews
- aid: zillow-group:rate-cloud-api
  name: Mortech Rate Cloud API
  description: Read-only mortgage pricing API from Mortech, a Zillow Group company, allowing online lead generators to submit
    loan criteria over HTTP POST and receive lender pricing back as JSON. Authenticated with a third-party name and license
    key under a Partner/MSA agreement. Zillow Group publishes no base URL for this API.
  humanURL: https://www.zillowgroup.com/developers/api/mortgage/rate-cloud-api/
  tags:
  - Mortgage
  - Rates
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/mortgage/rate-cloud-api/
- aid: zillow-group:prospect-sync-api
  name: Mortech Prospect Sync API
  description: Read/write API from Mortech, a Zillow Group company, for sending and receiving updates on pricing activity
    for every prospect in the Mortech system. Requests are HTTP POST and responses are XML, authenticated with a third-party
    name and license key under a Partner/MSA agreement. No base URL is published.
  humanURL: https://www.zillowgroup.com/developers/api/mortgage/prospect-sync-api/
  tags:
  - Mortgage
  - Leads
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/mortgage/prospect-sync-api/
- aid: zillow-group:prospect-trigger-api
  name: Mortech Prospect Trigger API
  description: Mortech prospect trigger API, part of the Zillow Group mortgage developer program alongside Prospect Sync and
    Rate Cloud. Access is requested through the Zillow Group developer portal under a Partner/MSA agreement; no base URL or
    reference documentation is published publicly.
  humanURL: https://www.zillowgroup.com/developers/api/mortgage/prospect-trigger-api/
  tags:
  - Mortgage
  - Leads
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/mortgage/prospect-trigger-api/
- aid: zillow-group:lead-posting-api
  name: Mortech Lead Posting API
  description: Read/write API from Mortech, a Zillow Group company, allowing partners to submit prospect information for pricing
    and lead routing. Requests are HTTP POST and responses are XML, authenticated with a third-party name and license key.
    No reversal, cancellation or deduplication mechanism is documented for a submitted lead.
  humanURL: https://www.zillowgroup.com/developers/api/mortgage/lead-posting-api/
  tags:
  - Mortgage
  - Leads
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/mortgage/lead-posting-api/
- aid: zillow-group:los-plug-in-integration-api
  name: Mortech LOS Plug-In Integration API
  description: Integration API from Mortech, a Zillow Group company, for connecting loan origination systems to Mortech pricing.
    Listed on the Zillow Group mortgage developer program with a request-access form; no base URL or public reference is published.
  humanURL: https://www.zillowgroup.com/developers/api/mortgage/los-plug-in-integration-api/
  tags:
  - Mortgage
  - Integration
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/mortgage/los-plug-in-integration-api/
- aid: zillow-group:lender-reviews-api
  name: Zillow Lender Reviews API
  description: API for accessing Zillow lender review data, listed under the Zillow Group mortgage developer program. Access
    is requested through the Zillow Group developer portal; no base URL or public reference documentation is published.
  humanURL: https://www.zillowgroup.com/developers/api/mortgage/zillow-lender-reviews/
  tags:
  - Mortgage
  - Reviews
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/mortgage/zillow-lender-reviews/
- aid: zillow-group:get-current-rates-api
  name: Zillow Get Current Rates API
  description: API for retrieving current mortgage rate data, listed under the Zillow Group mortgage developer program. Access
    is requested through the Zillow Group developer portal; no base URL or public reference documentation is published.
  humanURL: https://www.zillowgroup.com/developers/api/mortgage/get-current-rates/
  tags:
  - Mortgage
  - Rates
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/mortgage/get-current-rates/
- aid: zillow-group:rentals-lead-api
  name: Zillow Rentals Lead API
  description: Outbound webhook API that delivers Zillow Rentals lead information to a customer-supplied endpoint as URL-encoded
    HTTP POST callbacks. Zillow Group states the data format is fixed and that it cannot change API fields or the form. No
    inbound authentication, callback signature or retry policy is documented, and the only integration guide is a PDF.
  humanURL: https://www.zillowgroup.com/developers/api/rentals/lead-api/
  tags:
  - Rentals
  - Leads
  - Webhook
  tags_raw:
  - Rentals
  - Leads
  - Webhooks
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/rentals/lead-api/
  - type: Documentation
    url: https://s3.amazonaws.com/files.hotpads.com/+guides/Lead+API+Guide.pdf
  - type: Webhooks
    url: asyncapi/zillow-group-webhooks.yml
  - type: Support
    url: https://help.zillowrentalmanager.com/hc/en-us
- aid: zillow-group:rentals-feed-integrations
  name: Zillow Rentals Feed Integrations
  description: Rental listing feed ingestion for property managers and rental software partners, documented under the Zillow
    Group rentals developer program. A feed-delivery integration rather than a keyed request/response API; onboarding runs
    through rentalfeeds@zillow.com.
  humanURL: https://www.zillowgroup.com/developers/api/rentals/rentals-feed-integrations/
  tags:
  - Rentals
  - Listings
  - Feeds
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/rentals/rentals-feed-integrations/
- aid: zillow-group:transaction-management-api
  name: dotloop Transaction Management API
  description: RESTful JSON CRUD API for real-estate transaction management - loops, loop details, folders, documents, participants,
    tasks, activities, contacts and loop templates - secured with three-legged OAuth 2.0. Served by dotloop, a Zillow Group
    company, on api-gateway.dotloop.com; Zillow Group lists it as one of its own developer APIs and links the dotloop reference
    directly, which is why the base host differs from zillowgroup.com. The full contract is profiled separately in the dotloop
    repo.
  humanURL: https://www.zillowgroup.com/developers/api/transactions/transaction-management/
  baseURL: https://api-gateway.dotloop.com/public/v2
  tags:
  - Transaction
  - Documents
  - E-Signature
  tags_raw:
  - Transactions
  - Documents
  - E-Signature
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/transactions/transaction-management/
  - type: APIReference
    url: https://dotloop.github.io/public-api/
  - type: Webhooks
    url: asyncapi/zillow-group-webhooks.yml
  - type: SignUp
    url: http://info.dotloop.com/developers
- aid: zillow-group:real-estate-metrics
  name: Zillow Real Estate Metrics
  description: 'Zillow housing market metrics - median home values, rents and inventory - published from the national level
    down to the neighborhood level. Despite being listed as an API on the Zillow Group developer portal, the architectural
    style Zillow Group states is Download and the format is CSV: it resolves to the free Zillow Research data portal rather
    than a keyed endpoint.'
  humanURL: https://www.zillowgroup.com/developers/api/public-data/real-estate-metrics/
  tags:
  - Housing Data
  - Research
  - Open Data
  tags_raw:
  - Housing Data
  - Research
  - Open Data
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/public-data/real-estate-metrics/
  - type: Documentation
    url: https://www.zillow.com/research/data/
- aid: zillow-group:neighborhood-data
  name: Zillow Neighborhood Data
  description: Aggregate neighborhood-level housing statistics from Zillow, listed on the Zillow Group developer portal but
    delivered as free CSV downloads through the Zillow Research data portal rather than as a keyed API. No endpoint, authentication
    or response schema is published.
  humanURL: https://www.zillowgroup.com/developers/api/public-data/neighborhood-data/
  tags:
  - Housing Data
  - Research
  - Open Data
  tags_raw:
  - Housing Data
  - Research
  - Open Data
  properties:
  - type: Documentation
    url: https://www.zillowgroup.com/developers/api/public-data/neighborhood-data/
  - type: Documentation
    url: https://www.zillow.com/research/data/
name: Zillow Group
tags:
- Real-Estate
- Property Data
- MLS
- Mortgage
- Rentals
- Valuation
- Housing Data
- Transaction Management
tags_raw:
- Real Estate
- Property Data
- MLS
- Mortgage
- Rentals
- Valuation
- Housing Data
- Transaction Management
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: approval
  trial: false
  try_now: false
  public: false
  label: Requires approval
  confidence: high
  source:
  - plans
  - authentication
  - url: https://www.zillowgroup.com/
    status: 302
    note: declared website redirects to https://www.zillow.com/news/ — a different registrable domain (zillowgroup.com ->
      zillow.com), possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-08-28'
  method: searched
  note: Corrected 2026-08-28 from a derived 'Paid - Self-serve signup', which came from a 2026-05-04 finops/plans scaffold
    rather than from Zillow Group. Every one of the seventeen APIs on https://www.zillowgroup.com/developers/ stands behind
    a Request Access form or an invite-only data agreement, and no price, tier or free allowance is published for any of them,
    so pricing is unknown and onboarding is approval. Re-running derive-access-model.py will revert this until the finops
    scaffold is reconciled.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/zillow-group.png
access: 3rd-Party
created: '2025-03-01'
modified: '2026-08-28'
position: Consuming
description: Zillow Group is a leading real estate and rental marketplace that aims to make the process of buying, selling,
  and renting homes more streamlined and efficient. The company offers a wide range of services, including an online platform
  where users can search for properties, view listings, and connect with real estate agents. Zillow Group also provides tools
  and resources for homeowners, such as Zestimate, an automated valuation model that estimates the market value of a property.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
specificationVersion: '0.23'
x-enrichment:
  date: '2026-08-28'
  status: enriched
  artifacts_added: 10
  pass: local-v1

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