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, across 3 releases between November 2025 and early 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 will provide 69 single residential lots across three(3) sales release periods,

• Release 1: 20 Lots, released on 19 November
• Releases 2, and 3 expected early 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

OneOneFive’s Stage 2 land release will follow an 'Offers Invited with an End Date' sales approach. This approach offers a transparent and organised process for selling land, ensuring fairness while encouraging buyers to submit their best offers in a set time.

For release 1, offers will open at 9am Wednesday 19 November and close at 4pm Wednesday 10  December 2025.

As it is an 'Offers Invited with an End Date' sales approach, all offers must be submitted within this timeframe to be considered.

• Pricing information for release 1 can be found here. 

For lot offer queries contact Hayden Groves, Ray White Dethridge Groves, contact details can be found on the 'Land for Sale' page.

To be informed about releases 2 and 3 of stage 2 please register your details here.

The ‘Offers Invited with an End Date’ means that offers need to be submitted by a specific date and time.

You'll be asked to:

1. Nominate up to three preferred lots available in the first release
2. Submit your best price and terms of your offer for consideration

Ahead of submitting your offer, we encourage you to plan your budget for both land purchase and home construction, consider speaking to a builder and home loan lender such as a finance broker or a bank.

Visit the ‘Land for Sale page’ to view the documents and how to submit your offer.

You will need to submit your offers between 9am Wednesday 19  November and 4pm Wednesday 10 December 2025, to our sales agent Hayden Groves via email This email address is being protected from spambots. You need JavaScript enabled to view it.

No offers can be accepted after 4pm Wednesday 10 December 2025 (AWST)

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. At that point, you might decide to wait for releases 2 and 3 of Stage 2, in early 2026.

To be informed about releases 2 and 3 of Stage 2 please register your details here.

We are following an open market and competitive process for land sales.

If you're a first home buyer, check your eligibility for:

• The First Home Buyers Scheme (5% deposits)
• The First Homeowner Grant (up to $10,000).

If you have further queries, please contact our sales agent, Hayden Groves, Ray White Dethridge Groves. His details can be found here

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 1 Lot Plan
• Waterwise Incentive Package
• Guidance Note - Retaining Walls
• Guidance Note - Soakwells

To be informed about releases 2 and 3 of Stage 2  and/or receive project updates via email, please register your details here.

Please contact our Sales Agent below.

Hayden Groves
0411 615 582
pThis email address is being protected from spambots. You need JavaScript enabled to view it.