TRIAS is a design practice based in Sydney, Australia. The studio is led by Jennifer McMaster, Casey Bryant and Jonathon Donnelly . 

The studio is founded on three principles: to create buildings that are solid, simple and beautiful. 

We believe that well designed spaces enrich people’s lives. We aim to create buildings that provide people with meaning, comfort and joy. 

As designers, we advocate for less but better. Our buildings adopt small footprints, but are generous in their relationship to light, air and outlook. 

Our work is equally influenced by local culture and a global outlook. We draw inspiration from all corners of the world, but aim to ground our work in its unique time, place and context. 

We treat materials with integrity, intelligence and rigour. We approach sustainability using common sense, and see the design of resilient and flexible spaces as a matter of cultural necessity.




Our practice maintains parallel interests in technology and craft. We are fascinated by the intersection of tradition and innovation, and believe this allows our buildings to weave into the continuum of the city.

Our design process is creative and investigative. We intricately examine every site and situation to understand the complexities and opportunities that are present.

We design in conversation with others, and work closely with our clients and consultants. Their input makes for rich and tailored outcomes.

We distill our work to its essence. We are constantly refining, working towards outcomes that are contemporary, reductive and direct. 

Our work aims to inspire its occupants, and to quietly provoke change in our cities, suburbs and landscapes.


Off white.jpg




Jennifer trained at the University of Sydney, graduating with Honours. She has gained experience with leading practices in Sydney and Copenhagen, and has worked on a range of residential and public projects. 

Jennifer is the recipient of the MADE by the Opera House Scholarship, the Byera Hadley Travelling Scholarship, the Bluescope Lysaght Prize, the Ruskin Rowe Prize and the NSW Design Medal, awarded by the Australian Institute of Architects. 

Jennifer is also a passionate writer and architectural advocate. She currently writes for the Danish Architecture Centre, and has created content for blogs, publications and radio programs.

She is currently teaching design at the University of Sydney.


Casey graduated with Honours from the University of Sydney. He has gained extensive design and documentation experience with award-winning studios in both Sydney and Melbourne, and has contributed to the development of residential and cultural buildings across Australia and Japan.

Casey is the recipient of numerous awards and prizes. In 2015, Casey was selected for the Dulux Study Tour, while, in 2016, he was awarded a Byera Hadley Travelling Scholarship for research into intergenerational care facilities.

Casey is an enthusiastic contributor to the architectural community, and is a member of the EmAGN NSW committee for young architects. He is a registered architect in both NSW (#9652) and Victoria (#18129).

He maintains parallel interests in building tectonics, with a particular fascination for finely crafted timber construction. 


Jonathon studied architecture at the University of Sydney, graduating with Honours. He has worked across several design disciplines, including graphic design, architecture and furniture design.

Jonathon has contributed to the design and development of various projects in award-winning studios. He has also been a key team member in several high-profile competitions. 

Jonathon has received the NSW Design Medal, awarded by the Australian Institute of Architects, as well as the Ethel M Chettle Prize, the CHL Turner Prize and the Sunlord Perpetual Prize. 

Jonathon is also a maker who frequently experiments with new technologies, building objects and prototypes.