About

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Partnering to create inclusive, sustainable and human-centred experiences.

The Owner & Developer

Founded in 1972 by Garry Rothwell, Winten Property Group remains a family-run business known for its architectural integrity, agility and high-quality developments across Australia.

The Management Team

CBRE’s expert on-site team combines engineering, property management, and placemaking skills to deliver premium, sustainable operations and nurture a thriving 1 Denison business community.

The Builder

Founded in 1962, Multiplex delivers enduring, sustainable structures through world-class construction expertise, collaboration and a global team focused on achieving clients’ goals.

The Architect

Bates Smart is a multidisciplinary design firm in Melbourne and Sydney, creating award-winning architecture and interiors that transform cities and enhance how people experience spaces.

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Notable achievements, awards and recognition.

Winner

Daniel Venuto (CBRE), Young Facilities Professional of the Year, FMA Industry Awards for Excellence

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2022

Finalist

Office Development, Innovation & Excellence Awards, Property Council of Australia + Rider Levett Bucknall

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2022

Nominated Finalist

Urban Developer Awards

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2021

Finalist

Excellence in Commercial Development, UDIA Awards

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2021

Commendation

Commercial Development Design, UDIA Awards

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2021

Commendation

Excellence in Design, UDIA Awards

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2021

Winner

Commercial Development, Urban Taskforce Development Excellence Awards

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2021

Winner

Property Management Team of the Year, RICS Awards

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2021

Winner

Facilities Management Team of the Year, RICS Awards

Property 1=Award 9

2021

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Leading the way in sustainable, healthy, efficient design.

At 1 Denison, we’re committed to leaving a positive legacy for future generations. We strive to deliver workspaces with a lower environmental impact and greater efficiency, as well as improving employee wellbeing.

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Achieved 6 Star NABERS Energy Rating

Using a 6-star scale, the National Australian Built Environment Rating System (NABERS) measures a building’s energy efficiency and carbon impact. To achieve this top-tier rating, 1 Denison leverages market-leading technologies, energy-efficient protocols, and continuous data monitoring to actively reduce emissions and optimise daily power performance.

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Achieved 6 Star NABERS Energy Rating

Using a 6-star scale, the National Australian Built Environment Rating System (NABERS) measures a building’s energy efficiency and carbon impact. To achieve this top-tier rating, 1 Denison leverages market-leading technologies, energy-efficient protocols, and continuous data monitoring to actively reduce emissions and optimise daily power performance.

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Achieved 4.5 Star NABERS Water Rating

This benchmark evaluates a building’s water management practices and systems conservation efforts. To secure this ambitious rating, 1 Denison utilises high-efficiency water-saving fixtures, tracks consumption patterns in real time, and implements targeted water-reduction strategies across all building operations.

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Achieved 4.5 Star NABERS Water Rating

This benchmark evaluates a building’s water management practices and systems conservation efforts. To secure this ambitious rating, 1 Denison utilises high-efficiency water-saving fixtures, tracks consumption patterns in real time, and implements targeted water-reduction strategies across all building operations.

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Achieved 6 Star NABERS Waste Rating

This performance standard measures how effectively a building manages, processes, and diverts its physical waste away from landfills. To achieve this maximum rating, 1 Denison implements strict operational disposal guidelines, champions proactive reduction and recycling initiatives, and rigorously audits waste streams to support a circular economy.

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Achieved 6 Star NABERS Waste Rating

This performance standard measures how effectively a building manages, processes, and diverts its physical waste away from landfills. To achieve this maximum rating, 1 Denison implements strict operational disposal guidelines, champions proactive reduction and recycling initiatives, and rigorously audits waste streams to support a circular economy.

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WELL V2 Platinum Certified

Meeting the highest global standards for health and wellbeing in the workplace, 1 Denison is designed and operated to enhance the tenant experience through amenities and facilities that support wellbeing.

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WELL V2 Platinum Certified

Meeting the highest global standards for health and wellbeing in the workplace, 1 Denison is designed and operated to enhance the tenant experience through amenities and facilities that support wellbeing.

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Achieved 5 Star Green Star Rating

Certified by the Green Building Council of Australia, the assessment examines the building’s environmental performance across design, construction and operation, supporting lower operational costs and a smaller carbon footprint.

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Achieved 5 Star Green Star Rating

Certified by the Green Building Council of Australia, the assessment examines the building’s environmental performance across design, construction and operation, supporting lower operational costs and a smaller carbon footprint.

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Our world-class business community.

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What Our Service Partners Say About 1 Denison.

1 Denison is a great place to work because of the management culture. They treat us as part of their own team. We receive strong support, clear communication, and genuine respect for our work, with feedback always delivered professionally and constructively.

Matt Ahmadi

Executive General Manager NSW

Dimeo Cleaning Services

What we value most about our partnership with 1 Denison Street is their willingness to lead with purpose. From procuring GECA-certified products into the entire building to backing social impact gifting and cookbooks, they consistently align commercial decisions with meaningful social impact outcomes. Their support has not only helped scale Two Good’s impact but has set a strong example of what socially responsible building management can look like.

Suzie Barnett

Business Growth & Partnerships

Two Good Co.

The iconic 1 Denison isn’t just a building, it’s home to an incredible team of forward-thinking people. Myself and KONE are genuinely proud to work alongside them, building a strong partnership and striving together to deliver excellence.

Eliza hall

Account Manager SEB Sydney North

Kone Elevators

Working together with the team at 1 Denison has truly reflected the exemplified essence of collaboration and unity. The Glad Group team truly feel that we are an integral part of the 1 Denison family which is demonstrated by the strong voice we have within the asset that speaks to the strength of this partnership. It's partnerships like these that are truly unique and create a thriving environment for everyone involved.

Steve Iloski 

Chief Executive Officer

Glad Group