The 2023 Sustainability Edition of "By Design Magazine" is a comprehensive exploration of sustainable design in the Australian context. This edition delves into various themes such as coastal erosion, retrofitting for efficiency, and integration of Australia's unique flora and fauna in landscape design. It emphasises innovative strategies in sustainable urban planning and building design, highlighting the role of building designers in promoting a greener, more sustainable future. This edition presents a rich blend of insights, case studies, and articles, showcasing the commitment of the Australian design community to sustainability.