Cottesloe Western Australia—Legislative Assembly
Interactive map of electoral district boundaries from the2025 state election
State	Western Australia
Dates current	1950–present
MP	Sandra Brewer
Party	Liberal
Namesake	Cottesloe
Electors	33,150 (2025)
Area	33 km2 (12.7 sq mi)
Demographic	Metropolitan
Coordinates	32°00′S115°46′E / 32.00°S 115.77°E /-32.00; 115.77
Electorates around Cottesloe: Indian Ocean Churchlands Churchlands Indian Ocean Cottesloe Nedlands Indian Ocean Fremantle Bicton

Cottesloe is aLegislative Assemblyelectorate in the state ofWestern Australia. Cottesloe is named for the westernPerth suburb ofCottesloe, which falls within its borders. A previous member,Colin Barnett, was the 29thpremier of Western Australia. The current member,Sandra Brewer, was elected in the2025 state election.

Cottesloe was created at the 1948 redistribution, at which three new metropolitan electorates were created to replace former northern and agricultural seats in Parliament.^[1] Its first member was elected at the1950 election, and it has always been a safe seat for theLiberal Party and its predecessors.^[2]

It has only had four members. The first, SirRoss Hutchinson, served as a senior minister in theBrand government. He was succeeded in 1977 byBill Hassell, who served asOpposition Leader toPremierBrian Burke in 1984–1986. Hassell retired in 1990, and was succeeded byColin Barnett ata by-election. Barnett served as Deputy Premier, Minister for Energy and, after 1995,Education during theCourt government in 1993–2001, and Opposition Leader in 2001–2005. Barnett, seen as a moderate within Liberal ranks, resigned the leadership after the2005 election. He had originally planned to retire at the 2008 election, but after the troubled seven-month leadership ofTroy Buswell and generally poor opinion polls, Barnett was persuaded to reconsider (the nominated candidate for Cottesloe, Deidre Willmott, stood aside), and regained the leadership on 6 August 2008 on a unanimous party vote, one day before the2008 election was called.^[3][4] At this election, Barnett became Premier of a minority Liberal-National government.

Barnett led the Liberals to a decisive victory in2013, but was heavily defeated in 2017 and returned to the backbench. As a measure of how safe this seat has been for the Liberals, Barnett suffered a swing of 7.8 percent but still retained it with a comfortable margin of 63.3 percent, making Cottesloe the Liberals' safest metropolitan seat and the second-safest statewide. He resigned later in 2018, and businessmanDavid Honey easily retained the seat for the Liberals with a healthy swing in his favour. At the nextstate election in 2021, Cottesloe became one of only two remaining Liberal-held seats, and the only Liberal held seat in Perth. Honey became the leader of what remained of the Liberal Party.^[5]

Honey therefore became the third member for Cottlesloe and in a row to serve as leader of the state Liberal Party. He was defeated inpreselection in February 2024 bySandra Brewer, who succeeded Honey as the member for Cottesloe in the2025 state election.

As at the 2007 redistribution, Cottesloe is bounded by Loch Street and Brockway Road to the east, Perry Lakes andBold Park to the north, the Indian Ocean to the west, and theSwan River to the south and southeast. It includes the suburbs ofClaremont,Cottesloe,Mosman Park,Mount Claremont,North Fremantle,Peppermint Grove andSwanbourne.^[6] Major features within the electorate includeCampbell Barracks (Australia),The Grove Library andThe Grove Community History Library, Cottesloe Beach and several private schools includingScotch College,Christ Church Grammar School,Methodist Ladies' College andPresbyterian Ladies' College.

Prior to the redistribution, it had additionally contained sections ofCity Beach andFloreat, which were moved north into neighbouringChurchlands.

Cottesloe and the neighbouring electorates ofChurchlands to the north andNedlands to the east comprise the affluent western suburbs of Perth—theAustralian Bureau of Statistics'sSEIFA index (2001) ranked them as the highest three electorates by socio-economic status in Western Australia, with high scores on educational and employment opportunity. At the 2006 census, the median individual income in the Cottesloe electorate, based on its 2005 boundaries, was $639 per week compared to $513 in the Perth metropolitan area, and the median weekly household income was $1,416 compared to $1,086 across Perth. 56.8% of the population were professionals or managers.^[7]

• Electorate profile (Antony Green, ABC)

• Electoral districts of Western Australia
• Cottesloe, Western Australia
• 1950 establishments in Australia
• Constituencies established in 1950

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