B01 is an award-winning architecture and design firm based in Tokyo, working across Japan.

Environment doesn’t just influence quality of life. Your home is self-expression, identity, and legacy. Home design can shape and support your routines. B01 brings an unconventional level of quality for an elevated and bespoke lifestyle.

Residential Architecture & Design Services

Whether the scope is comprehensive or focused, we approach each project with rigor and care. We can support:

New Construction: wood, steel-frame, concrete
Renovation: earthquake safety improvements, historic properties, use conversions
Single family, multi-family, multi-generational
Primary residence, second home, villa, and mixed-use buildings
Japanese & Western sensibilities
Interior design and space planning
Custom built-ins and finishes
Permitting & construction supervision

Design Your Life in Japan

Our work begins with rigorous intake and conversations. We listen to our clients, seeking to understand the vision for the project, functional needs, obstacles, budget, and timeline. We gather information on the site and research constraints.

Home design is an iterative process. We study the project internally, identify parameters, and set unique goals for each project. We review in-progress options with our clients. We respect timelines, budgets, your wishes and vision. Every design is one-of-a-kind.

Thoughtful Updates for Old Homes

Renovations of old homes in Japan demand a careful balance between preservation and updated technologies. We seek to modernize homes with respect for the building’s history, culture, local context, and individual character. The approach depends on your vision. Modern functionality may be integrated discreetly, through improved environmental comfort, light, and spatial efficiency. Alternatively, updates may be be expressed with striking contrast. By re-considering traditional materials in new ways, we liberate structures to evolve; revealing intentional home design that feels authentic, practical, and inspired.