WA’s land and infrastructure development agency DevelopmentWA purchased the Hamilton Senior High School site from the State Government in January 2018.

DevelopmentWA on behalf of the State Government has taken on this revitalisation project based on our award-winning track record in transforming school sites into thriving new communities.

The school was demolished and the land remediated, Stage 1 works are complete, and house construction has begun. Stage 2 works are complete with a land for sale period occurring between November 2025 and early 2026, across three releases.

Projections show that by 2050 Perth’s population will reach 3.5 million people. As Western Australia’s land development agency, one of our responsibilities is to ensure the availability of land for jobs and land for living for current and future Western Australians.

Urban regeneration is a key strategy to help make the most of existing infrastructure, including roads, access to public transport, established job opportunities, businesses and health and education facilities. DevelopmentWA identifies suitable infill and urban renewal sites in established communities and develops them in a way that is sympathetic to their surrounding environment and community.

The Hamilton Senior High School site is in the southern corridor of Perth, near excellent infrastructure and facilities and presents an ideal opportunity to help address Perth’s rapid population growth while improving local amenity and housing diversity.

DevelopmentWA, as Western Australia’s land development agency, creates connected, vibrant urban places around Perth. DevelopmentWA will transform the former Hamilton Senior High School site into a residential area that integrates with the surrounding area and that will support the City of Cockburn’s Revitalisation Strategy.

DevelopmentWA’s goal is to transform the site into a new community that integrates with the surrounding area and that supports the City of Cockburn’s Revitalisation Strategy. Residents will enjoy a vibrant and connected community that offers a diverse range of modern housing options.

DevelopmentWA has demolished the school buildings and remediated the site in accordance with relevant, health, safety and environmental guidelines and used best practice for waste management and recycling.

Materials from the school will be used throughout the new development including within the landscaping, for example bricks from the school have been used in paths and steps around public open spaces. 

Upon completion, OneOneFive Hamilton Hill will offer up to 300 new homes for Western Australians.

Homes will range from single residential flat and split-level lots to terrace homes,  including 125sqm compact lots and five grouped housing sites.

These lots will be released over three stages:

• Stage 1: Complete, homes under construction
• Stage 2: 69 single residential lots, were released between November 2025 and March 2026
• Stage 3: Civil works to start mid 2026

Through alternative construction methods at OneOneFive Hamilton Hill, we aim to:

• Promote climate responsive design
• Reduce energy consumption combined with improved comfort
• Achieve net zero energy homes + no gas

As it's more sustainable, residents at OneOneFive are encouraged to build their homes with a timber frame. The benefits are many:

• Sustainability
• Quality
• Space
• Flexibility

Stage 2 is located at the top section of OneOneFive Hilton Hill with Ralston Street to the North and Stock Road to the East. Visit the 'Land for Sale' page to see the map

Stage 2 provided 69 single residential lots across three (3) sales release periods:

• Release 1: 20 lots. Offer period is now closed (19 November to 10 December 2025).
• Release 2: 24 titled lots. Offer period is now closed (21 January to 11 February 2026).
• Release 3: 23 titled lots: Offer period is now closed (4 March to 24 March 2026)

These lots are suitable for residential homes, including townhouses and split level. The house designs need to comply with the Stage 2 Local Development Plan and the Stage 2 Design Guidelines, these are available on the 'Land for Sale' page.

The lot sizes range from 152m² to 345m²

Buyers can nominate up to three preferred lots.

If your first and second choices are allocated to other buyers, the sales agent will be in touch to discuss your third option.

For sales queries please contact our Sales Agent below.

Hayden Groves
0411 615 582
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Visit the  ‘Land for sale page’ to view:

• Helpful Information Buyers Guide with Frequently Asked Questions
• Stage 2 Design Guidelines
• Stage 2 Local Development Plan
• Stage 2 Release 2 Lot Plan
• Waterwise Incentive Package
• Guidance Note - Retaining Walls
• Guidance Note - Soakwells

To be informed about Stage 3 land at 115 Hamilton Hill and/or receive project updates via email, please register your details here.