Studio Co+Hab is an architecture firm focused on innovative and sustainably-built environments such as cohousing, cohabitation, and light footprint living.

Collaborate (co)

We believe great design is achieved with an integrated and cooperative team. That means facilitating processes to engage our clients in design and working closely with other designers, engineers, builders, and developers to identify and realize the best ideas.

Empower (Em)

We see design as an opportunity to accelerate our clients' goals and aspirations. Because objects and spaces can be tools to empower their users, we believe design can and should play an important role in addressing issues of climate, justice, and community.

Innovate (In)

We see every project as unique and important. Whether it is a renovation or new neighborhood, with each project we ask, "What more can be accomplished than just getting it built?" We seek to unlock new potential for individuals, communities, and the world within the context of budget and timeline.


We are a full-service architecture firm, focused on co-housing, single and multi-family housing, and mission-based projects of all scales. We work across North America and worldwide. Our offices are located in Bozeman, MT and Louisville, KY.

Right Size

We excel at designing right-sized floor plans, meeting your needs.

Right Price

We optimize projects to meet your goals within your budget.

Bright Planet

We implement a holistic approach to social, economic, and environmental success.


Our newest project BOZEMAN COHOUSING features sustainable community housing built for a better now and brighter future.

The group was interested in living in a community where they knew and cared about their neighbors and worked with us to conceive of and launch their project. We used a participatory design process to engage the future residents directly in choices in the design of the community. As sustainable architects we immerse ourselves to better understand the issues at hand; Erik and his family have joined Bozeman Cohousing as co-residents.

headshot of erik bonnett

Erik Bonnett

Erik Bonnett is a registered architect with deep expertise in sustainability and participatory design. His experience includes facilitating integrated design of groundbreaking LEED and net zero carbon projects, while at Rocky Mountain Institute. His work focuses on integrating the economic, environmental, and social components of sustainability with a focus on equity and empowerment. Erik taught sustainability from an interdisciplinary perspective at Montana State University and has published research on cost optimization of energy efficiency. He has worked to design and also found cohousing communities across the United States. He is passionate about collaborating with clients who possess a strong mission, be they intentional communities, individuals, or NGOs.

headshot of mathilde berthe

Mathilde Berthe

Mathilde Berthe is a graduate architect from ENSA Normandie School in France. Her background in Cohousing design includes working at McCamant and Durrett Architects, who introduced the concept of Cohousing in America. She also helped develop a cooperative that aims to facilitate the emergence of Cohousing projects in France, called Habitat & Partage. Between France and the USA, she has visited and contributed to many intentional communities, refining her expertise in the social impact of design. While living at Les Hérisons in Prades de Lez (FR), for example, she contributed to the auto-construction phase - engaging with straw-bale construction while living with the residents. She is experienced in designing workshops and giving public presentations inspired by her diverse experiences.