About us

Castlerock is a funds manager and full-service property group with more than 18 years experience delivering our investors predictable returns by taking a long-term view of asset development and management.

Our focus is on acquiring, developing and managing assets underpinned by key performance indicators such as high occupancy rates and excellent tenant retention.

Our team’s extensive specialist knowledge is integral to our success, positioning Castlerock as a trusted advisor to State and Federal Governments, helping them look ahead, plan strategically and achieve fit-for-purpose buildings tailored to their needs.

To date, we have added more than 35 government-leased properties to our portfolio, in regional and suburban locations as geographically diverse as Port Hedland and Hobart.

Advisory Board

  • Hank Colour

    Hank Bronts

    Managing Director and Founder

    Hank has been successfully providing asset and funds management services to the owners of office buildings with government tenants since 1990. Over this time, he has developed special expertise that has enabled Castlerock to become a trusted partner in the Government sector. Hank has developed more than 30 properties over his career.

  • Adam Colour

    Adam Bronts

    Director – Business Development

    Adam is responsible for all aspects of business development at Castlerock and has been with the company for more than 14 years. Adam has overseen the development of all projects since 2007 and is in charge of stakeholder liaison. He ensures projects not only meet budget through design development but also meet the high expectation of future tenants.

  • jason colour

    Jason Bronts

    Director – CFO

    Jason joined Castlerock in 2008 and is responsible for the financial management of the business. Prior to joining Castlerock, Jason spent time at KordaMentha in Melbourne, Macquarie Bank in Sydney and Legal & General Investment Management in London. Jason holds Bachelor degrees in Engineering and Commerce.

  • Matt Colour

    Matthew Chun

    Non Executive Advisory Board member

    Matthew Chun has over 26 years' of property funds management expertise across all property sectors including development.  During his career he has been a CEO and Director of ASX listed property organisations and has been involved in the development and acquisition of over $3 billion of real estate throughout Australia.

    Matthew has a number of non executive and advisory board positions.

  • Robert Colour

    Rob Schieber

    Non Executive Chairman - Advisory Board

    Robert brings a wealth of 28 years’ experience to clients, having worked in both industry and public practice. He intimately understands the financial demands facing business owners and is well positioned to provide timely, relevant and practical advice.

    Robert’s focus is on assisting clients to grow and protect their businesses’. He achieves this through providing strategic management, taxation, asset protection and succession planning advice.  This is coupled with extensive experience in structuring, valuations, buy-sell transactions and business planning.  His knowledge and experience encompasses practical advice for businesses in all phases of their life cycle.

  • Aaron Colour

    Aaron Ballenger

    Director – Projects

    Aaron joined Castlerock in 2009 and brings a proven track record of delivering successful projects for nearly two decades. Aaron holds a Bachelor of Civil Engineering, a Bachelor of Science and several other qualifications. In his role Aaron provides leadership to Castlerock’s design, procurement, construction and facility management teams.

  • Hank BW
  • Adam BW
  • Jason BW
  • Matt BW
  • Robert BW
  • Aaron BW

Our long history in property development make us a valuable one-stop-shop for government clients and our integrated model gives us the ability to extract maximum value from every square metre in order to deliver better returns.

In addition, our tenants benefit from continual optimisation of their assets, which gives us exceptional tenant retention rates – we’ve never had a tenant vacate and our portfolio is 100 per cent leased.

We approach our work with a win-win mindset, delivering exceptional returns, exceeding expectations and delivering far-reaching social and economic benefits to the communities in which we operate.

With the public service the largest occupier of office space in Australia, we are well-placed to continue to be a strong and awarded operator in funds management.



Our Values

We take a long-term view of all our assets, assuring sound futures not only for our investors but also for the communities they serve. Built for purpose, NABERS and Greenhouse accredited - our buildings are energy efficient, economical and sustainable to operate. Proactive management throughout the lease minimises energy and water consumption while maximising profitability.

Buying local

We have successfully delivered projects in all states and territories, ranging from 250m2 facilities in remote aboriginal communities of Maningrida and Yuendumu to a 6,500m2 facility in Perth. We engage local building labour, managers and maintenance staff. Castlerock is deeply invested in communities our buildings serve.

Social responsibility

We are committed to giving back to communities, and on each project we engage Indigenous and local suppliers by priority. We believe that in building wealth for investors, we can also build a better society. Castlerock also designs and builds fully accessible buildings for all users.


At Castlerock, integrity means shared benefit. Our funds and assets offer a win-win for investors, government and the communities they serve. We create long-term partnerships and provide a bedrock for community outcomes. This delivers not only stable profit for our investors, but also contributes to a stable economy and prosperous society.