t o b Architect


T O B Architect is an award winning architectural practice based in Dublin, Ireland. It was established in 2013 by Thomas O Brien. Thomas studied architecture at University College Dublin, graduating in 2005. He is a member of Royal Institute of Architects of Ireland.
Every project T O B Architect undertakes builds on the tradition of a critical architecture that evokes meaning and satisfies the senses. The practice’s work explores materiality and spatial quality while being referential to history, typology, economy, environmental and contextual prompts. T O B Architect works in a collaborative manner with clients and construction professionals and seeks ultimately to deliver buildings that all involved can be proud of.
The practice has been recognised domestically and internationally, receiving an Architectural Association Award 2019 for Killan Farmhouse, and being shortlisted for the Architectural Review Emerging Architect prize in 2018.
Since its foundation, the work of T O B Architect has been predominantly focused on residential projects in both rural and urban settings. As a project architect Thomas has also worked on a range of large and small public projects, from educational, healthcare and civic buildings to interior fit outs, installations and exhibitions. The practice offers a comprehensive design and project management service from inception to completion on all projects.
Thomas is a Design Fellow at University College Dublin where he teaches in the first year and fifth year studios.


2021-  The European Union Prize for Contemporary Architecture, nominee.
2020-   European Centre for Architecture Art Design and Urban Studies,
40 under 40 Architecture and Design Award.
The Arts Council, Architecture Bursary Award.
Royal Institute of Architects Ireland, Future Award
2019 –  Architectural Association of Ireland, Killan Farmhouse – Award.
Wallpaper Magazine, Architects Directory 2019
2018 –  Architectural Review, Emerging Architect Prize.
Architectural Association of Ireland, K&K House – Special Mention.


2020 – Alternative HistoriesIrish Architectural Archive, Dublin

2013 – Future Perfect – Hugh Lane Gallery, Dublin

2012 – Folly – Ennistymon Courthouse Gallery, Clare

2012 – We had an idea about the future – Earlsfort Terrace, Dublin

2011 – Into a Limbo – 200 Clonliffe Road, Dublin


Emily Mannion, Jo Flahive, David McCarthy Paul O’Neill