Carsten has been a director of Architectus since 2008. Working collaboratively, he has developed and communicated successful strategies for quality urban design outcomes within a strong social, environmental and economic framework, for both public and institutional clients, as well as the private sector development community. Key recent projects in Christchurch include the Bus Interchange, Knowledge Centre/New Central Library, Innovation Precinct Masterplan, and East Frame Residential Developments.
Carsten has provided independent design advisory services for the private sector and New Zealand tertiary institutions. He has been a regular guest critique and has been engaged in the public debate around the built environment for many years through his work, as well as forums, workshops and lectures.