He is also Adjunct Professor at the University of Western Australia and the University of New South Wales and former co-director (with Vladimir Sitta) of Room 4.1.3- a design firm acknowledged with a Penn Press monograph (2005).
In over 30 years of practice he has worked simultaneously as an academic and a consultant specializing in the formative stages of design and planning projects ranging across all scales. Weller’s creative work has received numerous awards, predominantly in international design competitions, and been exhibited in galleries such as the Museum of Contemporary Art in Sydney, the Gardner Museum in Boston, the MAXXI Gallery in Rome and the Canadian Design Museum.
Weller's research has concerned scenario planning for cities, megaregions and nations. His most recent research concerns global flashpoints between biodiversity and urban growth as documented in the web-based publication ‘Atlas for the End of the World – Atlas for the Beginning of the Anthropocene’. This research is now being extended as a set of urban design case studies under the rubric of ‘The Hotspot Cities Project’.
Weller has 6 single authored and edited books to his name, as well as over 100 academic papers, book chapters and articles on the theory and practice of landscape architecture. A selection of these writings is available over-page.
In all his work he has emphasized a critical approach to the discipline. He teaches subjects in the history of ideas of nature, contemporary urbanism and advanced design studios. In 2012 he received a national (Australian) teaching award and in both 2017 and 2018 was voted by the Design Intelligence Survey as one of North America’s “most admired” teachers.
Weller is a member of the International Federation of Landscape Architect’s (IFLA) Advisory Circle and is the Creative Director of the interdisciplinary journal of landscape architecture LA+.