
About us
We are Transition by Design, an RIBA chartered and Passivhaus certified architecture and design cooperative based in Oxford. Our team builds homes, neighbourhoods and cities for an ecologically sustainable and convivial future.
We specialise in ecological architecture, community engagement, citizen-led and participatory design, action research, meanwhile use, and community-led housing. As a workers’ cooperative, we operate democratically—reinvesting profits into our team, our community, and projects that align with our values.
If you’ve got a project in mind, please get in touch. We’d love to hear from you.
Our people

Sammy-Jo Hagan
Architectural Designer & Retrofit Coordinator

Liv Harrison
Architectural Designer & Retrofit Coordinator

Wongani Mwanza
Architect & Participatory Urban Designer

Alex Towler
Senior Architect

Joyce Yiu
Part 1 Architectural Assistant
Associates

Florence Collier
Sustainability advisor, Mechanical Engineer, Passivhaus Designer

Andy Edwards
Researcher & Project Designer

Jack Feather
Architectural Designer

Charlie Fisher
Project Designer

Nor Greenhalgh
Placemaking facilitator

Patrick Osborne
Architect

Ellen Shaw
Part 1 Architectural Assistant

Felicity Stone
Architect/Project Manager/CDM Principal Designer

Emily Wright
Architectural Designer

Kate Ylioja
Architectural and Passive House Designer
Our services
Choose an area below to find out more about our approach and see examples of our work.