Paul is the principal architect of a practice based in Sydney working on urban, rural and remote area architectural projects throughout Australia and overseas. He is also one of three directors of Healthabitat, the other two directors have medical and environmental health backgrounds. For 28 years Healthabitat has worked to improve the health of Indigenous people, by improving their living environment and housing, in suburban, rural and remote areas of Australia. Over the last 6 years similar work has expanded to projects in rural areas of Nepal and urban USA. In 2011 Healthabitat was awarded the international UN Habitat's World Habitat Award and also the Australian Institute of Architect's national Leadership in Sustainability prize for sustaining the lives of people.