1+2 Architecture acknowledges the Palawa people as the traditional custodians of lutruwita, the lands on which our company is located and where we conduct our business. We pay our respects to ancestors and Elders, past and present. We are committed to honouring Australian Aboriginal and Torres Strait Islander peoples' unique cultural and spiritual relationships to the land, waters and seas and their rich contribution to society.

Photography by Lisa Kuilenburg
Photography by Lisa Kuilenburg
Cath Hall
Founding Director
Architect FRAIA, BArch (Hons), BEnvDes
Cath is a founding director of 1+2 Architecture and a registered architect with over 30 years of local and international experience. She is a highly skilled and design-driven practitioner, known for creating architecture that balances conceptual clarity, spatial richness, and functional performance. Her work is consistently informed by a deep commitment to design excellence and a desire to create memorable user experiences.
Cath brings extensive experience navigating complex planning environments and contractual frameworks. Her leadership is characterised by a clear design vision, collaborative engagement, and a strong emphasis on delivering projects that exceed client and community expectations.
Cath graduated with First Class Honours in Architecture from the University of Tasmania in 1992 and has been a registered architect since 1996. She has lived in New Zealand and New York where she undertook substantive short-term architecture roles. She operated her own practice for 2 years prior to co-founding 1+2 Architecture in 2002.
Her professional contributions extend beyond practice. She is a current and former elected member of the Australian Institute of Architects (AIA) Tasmanian Chapter Council (2017–2020; 2024–present), a board member of the Board of Architects of Tasmania (2003–2013; 2024–present), and serves as a AACA registration assessor. Cath has participated as a jury member for the AIA Tasmanian Chapter Awards, a member of the National Visiting Panel to the UTas School of Architecture, and as a guest lecturer at the University of Tasmania.
In recognition of her significant contribution to the profession, Cath was awarded a Fellowship of the Australian Institute of Architects in 2020.

