KOJI TSUTSUI & ASSOCIATES
Selected Works (2025–2002)
A chronological selection of architectural works, tracing the development of the practice from recent projects back to its early work.
Villa in Karuizawa
A recent representative house in Karuizawa.
Denkosha Headquarters
Office project built in the center of Tokyo for a company.
Mill Valley House
A California residential work showing our office's practice.
InBetween House
Award-winning house exploring spatial continuity between distinct volumes.
Stacked House
Compact urban house organized as vertically stacked living platforms and open stair connections.
Bent House
Urban residence shaped by a folded concrete envelope and carefully framed light-filled interiors.
School & Home for HIV Orphans
Community-oriented project structured around village-like spatial relationships.
Industrial Designer House
A residential project with a strong formal identity for an industrial designer.
House in Shimizu
Early house centered on courtyard, concrete enclosure, and framed domestic landscape.
Villa in Palo Alto
Landscape, pool and interior renovation for an existing house.
CVC Office
Office interior balancing precision, calm materiality, and planted interior landscapes.
Minneapolis Restaurants
Kado no Mise, Kaiseki Furukawa and Japanese Whisky Bar restaurant interiors.
Resort & Convention Center
Large-scale international proposal organized around courtyards, processional arrival, and gathering space.
WiL
World Innovation Lab office interior project.
Fish Factory in Ishinomaki
Fish factory built as part of a Tohoku earthquake recovery project.
Mission in Haiti
Mission complex proposal exploring social space, climate response, and communal gathering in Haiti.
Duplex in Todoroki
Duplex house organized by split levels, concrete planes, and carefully cut daylight.
Renovation in Akasaka
Apartment renovation focused on precision, soft light, and restrained residential interiors.
Noh House
House defined by dark concrete mass, choreographed light, and a sequence of quiet interior rooms.
Bar Clan
Intimate bar interior composed through darkness, reflection, and carefully edited views.
Extended “Engawa” House
Residence extending the Japanese engawa into a contemporary sequence between garden and interior.
Profile
University of Tokyo / Bartlett School of Architecture, University College London
Tadao Ando Architect & Associates / Mark Cavagnero Associates / Koji Tsutsui & Associates
UC Berkeley Visiting Associate Professor
World Architecture Festival, Winner / Architectural Record Design Vanguard / Architectural League Prize
Current notes
Project categories
Residential
- Villa in Karuizawa
- Villa in Palo Alto
- InBetween House
- Mill Valley House
- Industrial Designer House
- Bent House
- Yutenji House
- Extended Engawa House
- Noh House
- Case Study Biotope Housing
Commercial
- Denkosha Headquarters
- WiL
- Kado no Mise & Kaiseki Furukawa
- CVC
- Bar Clan
- Abeno Too
International
- Mill Valley House
- School & Home for HIV Orphans
- Mission in Haiti
- San Francisco Residential Project (ongoing)
Research / Concept
- Case Study Biotope Housing
- Relief Projects
- Haiti Concepts