Knott Inc. is an interior design studio established by Yoshihito Tokunaga.

We are constantly engaged in design work with the theme of “creation of new value” through interior design by these 4 regulations.

  1. Bring joy and inspiration to people through design.
  2. Upgrade progress continuously through creativity, ability, and dreams.
  3. Put lots of effort and time to satisfy customers (best design).
  4. Respect and encourage individual ability and creativity.

Creating New Value

New value is not only the use of new materials or computer-generated shapes that have never been seen before. We create the vision and direction that satisfied our clients in the form of clear interior design.

16th Anniversary of Company’s Establishment

We started from designing boutiques and ladies’ fashion brands, and now we are able to handle the full renewal of a department store building and large-scale commercial environments. Not only in Japan, we also design commercial projects in Taiwan, China, and other Asian countries recently.

We are an interior design studio that can enhance the brand’s value of company or client and create attractive space experiences through interior design from boutiques, restaurants and large commercial facilities.


Tokunaga Yoshihito was born in Sapporo, Hokkaido. When he was young, he always admired Western design and visited many countries. In his 20s and 30s, he traveled lots of countries in Europe and was immersed in store design for apparel manufacturer brands, and always designed with Western design in mind.。

Villa Sakuragaoka 101, 29-35 Sakuragaoka-cho, Shibuya, Tokyo
TEL:03-3461-1010 FAX:03-3461-1017
Representative Director Tokunaga Yoshihito
Date of Establishment
11, July, 2005

Main clients


Knott Inc.
〒150-0031 Villa Sakuragaoka 101, 29-35 Sakuragaoka-cho, Shibuya, Tokyo Japan
TEL : 03-3461-1010 FAX : 03-3461-1017