Domain Group
Australian property listings portal and agent software, now owned by CoStar Group.
The call
Domain sits as Australia's number two property portal, now funded by CoStar, while REA Group keeps the lead and AI search chips at the edges of how people find listings.
Domain Group runs a website where people buy, sell, and rent homes in Australia. It competes with REA Group (the market leader) and both sites are hard to replace because they have the most buyers and sellers, plus they get official property data from the government that others cannot easily get. Domain was bought by an American company called CoStar in August 2025, which means it is no longer independent. The big question now is whether CoStar will invest in Domain or use its profits to pay for CoStar's struggling US website called Homes.com, which is losing money to Zillow and other rivals. If CoStar pulls money out of Domain to fight that US battle, Domain's position could weaken.
Why
01
AI pressure: AI search answers (Google AI Overviews, ChatGPT-style property queries). AI answers could skip portals for simple property questions, but licensed data and agent listings keep transactions on Domain. Could AI do the core job? Unlikely.
02
Bigger players: REA Group (realestate.com.au). REA is the larger, News Corp backed leader with more traffic and pricing power, and is in active litigation with Domain. Could a giant copy it? Probably.
03
What protects it. Licensed government property data, two-sided agent and buyer network effects, and now CoStar's balance sheet.
What would change this call
Outcome of the REA vs Domain Federal Court litigation expected mid-2026. Shows whether REA's legal and market position further disadvantages Domain.
CoStar's quarterly earnings calls through 2026 on Domain integration and Australian headcount. Reveals whether CoStar is investing in Domain or treating it as a cost centre for US priorities.
Agent and vendor uptake of Domain's Matterport 3D listings after its July 2026 launch. Indicates whether Domain is gaining or losing listing share against REA.
CoStar's quarterly earnings calls through 2026 on Domain integration and Australian headcount. Reveals whether CoStar is investing in Domain or treating it as a cost centre for US priorities.
Agent and vendor uptake of Domain's Matterport 3D listings after its July 2026 launch. Indicates whether Domain is gaining or losing listing share against REA.
Key numbers
- CoStar completed buyout, Domain delisted from ASX
- H1 FY25 revenue A$223.8m, EBITDA up 14% YoY
- Domain claims 34% YoY audience growth (Ipsos Iris)
Named risks
- CoStar could treat Domain as a cost source for its US Homes.com fight against Zillow, diverting capital.
- Integration turbulence: March 2026 layoffs and dissolution of Domain's standalone strategy function.
- Ongoing Federal Court litigation with REA Group over marketing claims filed July 2026.
- Domain no longer files standalone ASX financials post-delisting, reducing performance transparency.
- Domain has never closed the audience/revenue gap with REA Group despite 25+ years as number two.
Rivals, as read in July 2026
| Rival | Direction | Evidence |
|---|---|---|
| REA Group | contesting | Domain filed Federal Court claim vs REA over marketing claims, July 2026; REA remains market leader |
| REA Group | gaining on | REA share price down 16% YTD by Nov 2025 partly on CoStar-Domain competitive concern per Macquarie |
| News Corp Australia | contesting | Adjacent incumbent as REA's majority owner in the AU residential advertising duopoly |
| Zillow (via CoStar Homes.com) | losing to | CoStar's Homes.com trails Zillow in US, risking capital being diverted from Domain per Feb 2026 layoffs |
Questions people ask
- Is Domain Group still listed on the ASX?
- No. CoStar Group completed its acquisition of Domain on 27 August 2025 and Domain formally delisted from the ASX effective 28 August 2025, becoming a wholly-owned CoStar subsidiary rather than an independently traded company.
- Who owns Domain Group now?
- Domain is wholly owned by CoStar Group (NASDAQ: CSGP) since the acquisition completed 27 August 2025 at an enterprise value of roughly A$3 billion. Before that, Nine Entertainment held a 60.05% majority stake.
- Was Domain Group profitable before it was acquired?
- Yes. In its last standalone results, H1 FY2025 (to December 2024), Domain reported statutory revenue of A$223.8m and NPAT of A$35.7m, with underlying EBITDA of A$77.8m, up 14% year on year, per its 13 February 2025 ASX filing.
- Has Domain Group had layoffs?
- Yes. Media reported in March 2026 that Domain cut roles in product, tech and marketing during CoStar integration, and dissolved its standalone strategy function into CoStar's central team, though Domain said hiring for photography/research roles could offset headcount overall.
- Is Domain's biggest competitor REA Group?
- Yes. REA Group's realestate.com.au is the clear Australian market leader; Domain remains the stable number two. The rivalry escalated when Domain filed a Federal Court claim against REA in July 2026 over disputed marketing claims, with REA counter-defending.
- Could AI replace Domain Group's business?
- Unlikely to replace it outright. Domain's moat rests on exclusive government data contracts (e.g. Victorian Valuer General), agent subscription lock-in, and a two-sided marketplace network effect; AI features like CoStar's Matterport 3D tours are being absorbed as add-ons, not replacements, live nationwide from 1 July 2026.
Timeline
- 2026-07-23Domain claims 34% YoY audience growth per Ipsos Iris (vendor-claimed)
- 2026-07-02Domain files Federal Court claim against REA Group over marketing claims
- 2026-04-15Domain rolls out Matterport 3D tours to 1,600+ suburbs, live 1 July 2026
- 2026-03-30CoStar confirms Domain layoffs in product, tech and marketing
- 2026-03-27Domain's standalone strategy function dissolved into CoStar central team
- 2025-08-27CoStar Group completes acquisition of Domain; delisting effective next day
- 2025-08-04Domain shareholders approve CoStar scheme of arrangement
- 2025-07-24FIRB approval received for CoStar-Domain deal
- 2025-05-09Scheme Implementation Deed signed at A$4.43 per share
- 2025-02-20CoStar acquires 16.9-16.96% initial stake in Domain at A$4.20 per share
Revision history
25 July 2026
First assessed. Protection under test. The text above is fixed as of this date and is not edited afterwards.
In the same band
Sources
- ASX Announcement, Implementation of scheme of arrangement (2025-08-27)
- Macquarie Capital (2025-10-01)
- ASX Announcement, CoStar unsolicited proposal (2025-02-21)
- Scheme Booklet
- ASX Announcement, FIRB approval received (2025-07-24)
- ASX Announcement, Scheme Meeting results (2025-08-04)
- Domain HY25 Results Announcement (2025-02-13)
- stockanalysis.com (2025-08-26)
- IBISWorld Company Profile
- Domain media release (2026-07-23)
- Domain Group
- CoStar Group Confirms Domain Layoffs (2026-03-30)