KEY OPERATION INC. Design

We see architecture as a way to connect people with cities, society, and the environment.
From private residences and housing complexes to offices, commercial spaces, and large-scale mixed-use developments, each project requires a unique response—and our mission is to identify and deliver the most appropriate solutions. By carefully studying the site context, history, culture, regulations, and natural environment, we explore the full potential of each project. In close dialogue with our clients, we shape clear, sustainable architectural strategies that span from spatial planning and material selection to construction methods. From the earliest design phases through to completion and operation, we guide the process with precision and care, ensuring that every project balances social and economic value with spatial quality and aesthetic clarity. Our goal is to be a trusted partner across diverse project types and scales, creating architecture that resonates with the needs of today while remaining relevant for the future.

+Bi-lingual Service

KEY OPERATION Inc. can provide a range of services. For building project, these include investigating the feasibility of the requirements, developing design proposals, applying for statutory approvals, preparing construction information, obtaining tenders for building works and administering a building contract.
We can also provide other services such as interior design, landscaping, urban planning, graphic design, product design, furniture design and project management.

The Representative Director of Key Operation Inc., Akira Koyama Dip MSc MArch ARB RIBA graduated the Bartlett School of Architecture, University College London, Master of Architecture course and worked in UK architectural practices including David Chipperfiled Architects for 6years.He is registered as an architect both in UK and Japan and has full knowledge of architectural practices in both countries. He is also a chartered member of Royal Institute of British Architects.

Our bi-lingual team can provide a full spectrum of design services in the following unique situations: Design services in Japan for English speaking clients.
Design services outside of Japan for Japanese or English speaking clients

+Building Type we can design

Private Residence
Estate Housings
Commercial Buildings
Hospitality Buildings
Offices
Cultural Buildings
Insitutional Buildings
Medical Facilities
Mixed Use
Landscape
Products