# Domain Group **Canonical:** https://apis.io/providers/domain-group/ **Website:** https://www.domain.com.au/ **APIs profiled:** 13 Domain Group (Domain Holdings Australia Ltd, trading as domain.com.au) is the second of Australia's two national residential property portals, alongside REA Group's realestate.com.au, and since 27 August 2025 has been a wholly owned subsidiary of CoStar Group. Headquartered in Sydney, Domain operates the domain.com.au consumer marketplace plus commercial, agent, and developer-project brands, and sits in the middle of the Australian value chain between selling and leasing agencies on one side and buyers, renters, banks, and PropTech builders on the other. Unlike most of the real estate sector, Domain runs a genuine, self-serve public developer portal at developer.domain.com.au: a developer signs up with GitHub, Google, or email, creates a project, and is immediately granted the "Agents & Listings" and "Properties & Locations" packages, with the remaining eleven packages - Address Suggestions, Campaign reporting, Listings Management, Price Estimation, Property Enrichment, Property Package, PropertyRadar, Rental AVM, Schools Data, and Webhooks - added per project and negotiated with an account manager. Domain publishes three machine-readable OpenAPI 3.0.4 documents (latest, v1, v2) directly from its Libraries page, backs them with an OpenID Connect discovery document at auth.domain.com.au, and serves everything from api.domain.com.au behind API-key or OAuth 2.0 (client credentials, authorization code, implicit) credentials. Write access is a different gate entirely: uploading or updating listings requires sandbox sign-off by email to api@domain.com.au and written permission from the principal agent of each agency, making listing management broker-authorised even though the read surface is self-serve. Domain carries no RESO Web API or RESO Data Dictionary certification, exposes no OData $metadata document and no Universal Property Identifier - RESO is a North American NAR-driven standard with no presence in the Australian portal duopoly - and it publishes no open, unlicensed dataset; all data is licensed under the Domain Group API Terms and Conditions. ## Kin Score — 49.3 / 100 (developing) Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 49.3). | Facet | Score | |---|---| | Discoverability | 92.6 | | Contract Quality | 64.5 | | Governance | 16.7 | | Contract Governance | 16.7 | | Operational Transparency | 34.2 | | Developer Ergonomics | 63.7 | | Commercial Clarity | 23.7 | | Access Clarity | 23.7 | ## Agent readiness — 45.1 (agent-ready) | Dimension | Value | |---|---| | Spec Presence | yes | | Agentic Access | derived | | Reversibility Documented | no | | MCP Server | no | | Auth Clarity | yes | | Idempotency | no | | Error Semantics | verified | | OpenAPI Examples | partial | | Rate Limit Signal | documented | | Event Surface Described | yes | | Agent Skills | derived | | Well Known Catalog | no | | Consent Identity | no | | Agent Card | no | | Dry Run Mode | no | ## APIs (13) - **Domain Address Suggestions API** — Search for valid Australian property addresses and resolve them to Domain property identifiers. Backed by GET /v1/properties/_suggest and GET /v1/addressLocators. Requires the a... - **Domain Agents & Listings API** — Access data on agencies, agents, and for-sale, for-rent, commercial, business, and project listings directly from Domain. Covers agency and agent search and profiles, residentia... - **Domain Campaign API** — Lets authenticated media agencies retrieve advertising campaign performance metrics for Domain listings and developer projects, via GET /v1/campaign/listing-performance and GET ... - **Domain Campaign API - Preview** — Preview channel of the Campaign API, giving authorised media agencies early access to campaign performance metrics ahead of general release. Documented as a separate API package... - **Domain Listings Management API** — View, create, and update residential, commercial, business, project, and off-market listings on domain.com.au, and manage the resulting enquiries, listing reports, and performan... - **Domain Price Estimation API** — Returns the current automated price estimate for a Domain property identifier via GET /v1/properties/{propertyId}/priceEstimate, including lower, mid, and upper price, a confide... - **Domain Properties & Locations API** — Property records, address locators, location profiles, weekend auction and sales results, suburb performance and historical statistics, and suburb demographics. Granted automati... - **Domain Property Enrichment API** — Enhances a known property with additional Domain-held detail through GET /v1/propertyenrichment, alongside the v2 property features and zoning/perils endpoints. Sold as a separa... - **Domain Property Package API** — A bundled package giving comprehensive property coverage in one subscription - address suggestion, property records, price estimates, residential listing search, location profil... - **Domain PropertyRadar API** — Create and manage watchlist portfolios of properties and read them back in summary or full form, including lookup by G-NAF address identifier. Covers POST/GET/DELETE on /v1/prop... - **Domain Rental AVM API** — Automated rental estimates for a Domain property identifier via GET /v1/properties/{propertyId}/rentalEstimate, plus the /v1/avm and /v1/avmReport endpoints. Requires the api_av... - **Domain Schools Data API** — Detailed information on Australian schools, retrievable by school identifier (GET /v2/schools/{id}) or by latitude and longitude (GET /v2/schools/{latitude}/{longitude}) for sch... - **Domain Webhooks API** — Subscription management for push notifications when data changes in the Domain system. Create, read, list, and delete webhook subscriptions via /v1/webhooks/{id}/subscriptions a... ## MCP servers (1) - **Domain Group MCP Server** ## Agentic access (1) - **Domain Group Agentic Access** — 221 operations · 76 acting ## Security (2) - **Domain Group Authentication** — apiKey/oauth2 · 2 schemes - **Domain Group Domain Security** — TLSv1.3 · DMARC ## Tags Real-Estate, Australia, Property Listings, Property Data, Valuation, AVM, Rentals, Listing Management, PropTech, Portal Marketplace --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/domain-group/). Scores are computed from the provider's own public artifacts under a published rubric.