Who owns Domain?
Domain is owned by CoStar (the United States, NASDAQ: CSGP), which has owned the brand since 27 August 2025.[1]
Evidence: CoStar Group, Inc. Annual Report on Form 10-K filed 2026-02-26, SEC EDGAR, 26 February 2026. Verified from filings; last checked .
Key facts
- Current owner
- CoStar Group, Inc. verified
- Owned since
- Owner HQ
- 🇺🇸 United States, Arlington
- Origin
- 🇦🇺 Australia
- Category
- Internet & digital › Online commerce › Property listings
- Parent ticker
- NASDAQ: CSGP
- Last verified
- · 1 sources
About Domain
Domain is the Australian residential property marketplace that CoStar bought in 2025, completing the acquisition of 100 per cent of its issued capital on 27 August 2025 at A$4.43 a share. CoStar's 10-K places it in the residential segment alongside Apartments.com and Homes.com, and says the deal also extended LoopNet to Australia. Domain's subsidiaries are listed in the filing's subsidiary exhibit, which shows around twenty Australian entities, including its Homepass business.
What CoStar's annual report says about Domain
Sentences about Domain from CoStar's latest annual filing[1], copied word for word.
Domain and OnTheMarket are our leading marketplaces in Australia and the U.K., respectively allowing real estate agents to advertise their listings.
Awareness and differentiation of our brands are important for attracting and expanding the number of users of, and subscribers to, our online marketplaces, such as the LoopNet Network, the Apartments.com Network, the Homes.com, OnTheMarket residential marketplaces, the Land.com Network, and Domain.
Our marketplace businesses, including the LoopNet Network, the Apartments.com Network, the Homes.com, OnTheMarket and Domain residential marketplaces, and the Land.com Network, depend on advertising revenue generated primarily through sales to persons in the real estate industry, including broker, agents, property managers and owners, real estate agents, and other advertisers.
How often CoStar names Domain in its annual report
A plain count of the times the name appears in the text of each annual report, not counting the start of a sentence. A brand that an owner writes about more is usually one it treats as central. The brand is named more often than it was three years earlier.
Ownership timeline of Domain
Where Domain sits in CoStar
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Open the full CoStar ownership tree →
See the full CoStar brand portfolio (6) →
Other brands owned by CoStar
CoStar controls 6 brands on Brandtree, 6 of them in internet & digital.
Also in internet & digital
Other brands in property listings, and who owns them
CoStar has more brands in property listings on Brandtree than any other owner: 6 of 19.
| Brand | Owner | Owner based in |
|---|---|---|
| Flatmates.com.au | REA Group | 🇦🇺 Australia |
| StreetEasy | Zillow | 🇺🇸 United States |
| Flatfox | SMG Swiss Marketplace Group | 🇨🇭 Switzerland |
| Bina.az | Kaspi.kz | 🇰🇿 Kazakhstan |
| Mercado Libre Classifieds | MercadoLibre | 🇺🇾 Uruguay |
| realtor.com | News Corp | 🇺🇸 United States |
| OneRoof | NZME | 🇳🇿 New Zealand |
| Property.com.au | REA Group | 🇦🇺 Australia |
About the owner: CoStar
CoStar is a publicly listed company headquartered in Arlington, United States. Brandtree records 6 brands under its control, and it is listed as NASDAQ: CSGP.
CoStar Group is an American commercial and residential real estate information and marketplace company, incorporated in Delaware and based at 1201 Wilson Boulevard, Arlington, Virginia, with its shares on the Nasdaq Global Select Market. Its core business is the subscription CoStar database, but its 10-K for 2025 groups its portals into a commercial segment (LoopNet and others) and a residential segment (Apartments.com, Homes.com, Land.com, Domain and OnTheMarket). It bought OnTheMarket in December 2023 and Domain in August 2025, and also owns Matterport, Visual Lease, BizBuySell and Ten-X.
🇦🇺 Domain and other Australian brands
Brandtree records a controlling owner for 203 brands that began in Australia. 59 of them (29%) are now controlled by a company headquartered in another country, Domain among them.
- 7plus — Southern Cross Media Group 🇦🇺
- 9Now — Nine 🇦🇺
- Afterpay — Block 🇺🇸
- Corporate Traveller — Flight Centre Travel Group 🇦🇺
- Flatmates.com.au — REA Group 🇦🇺
- Google Maps — Alphabet 🇺🇸
Frequently asked questions
Who is the parent company of Domain?
The parent company of Domain is CoStar, a publicly listed company headquartered in the United States.
Is Domain Australian or American?
Domain originated in Australia, but it is owned today by CoStar, which is headquartered in the United States. So Domain is an Australian-origin brand under American ownership.
Since when has CoStar owned Domain?
CoStar has owned Domain since 27 August 2025.
Is Domain still owned by CoStar?
Yes. As of 9 October 2026, Domain is still owned by CoStar. The ownership record was last checked against primary sources on that date.
Sources (1) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
- [1] CoStar Group, Inc. Annual Report on Form 10-K filed 2026-02-26 — SEC EDGAR, SEC Form 10-K, published 26 February 2026; retrieved 2 October 2026.
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