Company Overview / Licenses

Name SENKOSHA Co., Ltd.
Representative Director Koichi Kato
Senior Managing Director Chikara Kato
Director Ken Nakae
Sapporo Head Office
Heiwadori 17-chome, Kita 3-6, Shiroishi-ku, Sapporo, Hokkaido, 003-0029
[Plants#2] Heiwadori 17-chome,Kita13-11,Shiroishi-ku,Sapporo,Hokkaido,003-0029
Tokyo Branch Okudo 3-chome, 27-15, Katsushika-ku, Tokyo, 124-0022
Established May 1, 1971
Incorporated Oct 4, 1976
Capital Stock 10 million yen
Bank North Pacific Bank Shiroishi Hongo Branch/Hokuriku Bank Shiroishi Branch
Annual Turnover 1.2 Billion yen
Employees 40 (as of October 4,2021)
Primary Business Shops - Custom Furniture Planning - Design - Planning - Manufacture - On-Site Management - Construction
License 建設業許可 北海道知事許可(般-2)石第00250号
Certification 国土交通省 経営力向上計画に係る認定 北開局建産第369号
Recognition 北海道 経営革新計画に係る承認 石商労第233−35号


1971 Founded by current CEO Koichi Kato as an exhibition construction business at 8 Chome Sakaedori, Shiroishi-ku, Sapporo
1976 Established as a corporate entity under the name Senkosha Co., Ltd.
1980 Registered as an structural interior builder and licensed contractor
1986 Branch office established in Tokyo's Minato-ku to allow expansion of business nationwide
1987 Plant #2 established next to Sapporo Head Office
1992 Founded cooperative organizaion Koubokukai to strengthen production organizations
1996 Opened new branch office in Tokyo's Katsushika-ku
2009 As part of international service,began taking on Chinese trainees at Sapporo Head Office
2011 Celebrated 40 years since founding and 35 since incorporation
2012 Relocated Tokyo Katsushika-ku Branch to new office building opened in same ward
2016 Celebrated 45 years since founding and 40 since incorporation
2017 Constructing a new office building and creating a new logo.Our homepage has been revamped
2018 Began taking on Vietnamese trainees at Tokyo branch
2018 Sapporo Head Office Won the 31th Nikkei New office Award
2019 Updated homepage again
2020 Unveiled DURCH as the first original brand
2020 Won an award for DURCH at the Good Design Award 2020
2021 Celebrated 50 years since founding and 45 since incorporation