| 1890 |
長野県下伊那郡神原村（現天竜村）にて、創業 |
| 1890 |
Founded in Kanbara Village, Shimoina District, Nagano Prefecture (currently Tenryu Village). |
| 1912 |
上伊那郡飯島村（現飯島町）にて、都築木材店を開業 |
| 1912 |
First Tsuzuki timber store opened in Iijima village close to Ina city. |
| 1920 |
飯島町に宿願の製材工場建設 |
| 1920 |
Construction of a long-sought sawmill in Iijima Town. |
| 1933 |
伊那町（現伊那市）に工場を設立 |
| 1933 |
Established a factory in Ina City (currently Ina City). |
| 1957 |
東京都江東区深川冬木町に、東京営業所を設立 |
| 1957 |
Established Tokyo Branch in Fukagawa Fuyuki-cho, Koto-ku, Tokyo. |
| 1959 |
法人化し、都築木材株式会社を設立 |
| 1959 |
Incorporated and established TSUZUKI CORPORATION. |
| 1960 |
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| 1960 |
Headquarter sawmill relocation. |
| 1965 |
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| 1965 |
Opened Hachioji Branch Office. |
| 1976 |
東京営業所を、木材流通の中心地である東京都新木場に移転 |
| 1976 |
The Tokyo Branch was relocated to Shinkiba, Tokyo, which is the center of timber distribution. |
| 1993 |
1990年に創業100年を迎え、1993年に経営トップを一新。代表取締役社長に都築 透、代表取締役副社長に都築 寬明が就任 |
| 1993 |
It celebrated its 100th anniversary in 1990 and renewed its top management in 1993. Tohru Tsuzuki was appointed as President, and Hiroaki Tsuzuki was appointed as Vice President. |
| 1994 |
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| 1994 |
Achieved sales of 10 billion yen. |
| 1995 |
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| 1995 |
Construction of new head office building. |
| 1996 |
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| 1996 |
Established Precut Mill. |
| 1998 |
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| 1998 |
Opened Mokuzai Sanbu Tokyo Office. |
| 2002 |
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| 2002 |
Established Remanufacturing Mill. |
| 2007 |
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| 2007 |
Opened German Branch Office. |
| 2008 |
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| 2008 |
Opened West Tokyo Branch. |
| 2009 |
東京営業所と木材三部東京を統合し、東東京支店を開設 |
| 2009 |
Opened East Tokyo Branch by integrating Tokyo Branch Office and Mokuzai Sanbu Tokyo. |
| 2011 |
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| 2011 |
Opened Canadian Branch Office. |
| 2012 |
代表取締役会長に都築 透、代表取締役社長に都築 寬明が就任 |
| 2012 |
Tohru Tsuzuki is appointed as Chairman and Hiroaki Tsuzuki is appointed as President. |
| 2017 |
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| 2017 |
Opened Komagane Branch Office. |
| 2018 |
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| 2018 |
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| 2018 |
Established Komagane Branch Office Takato Factory. |
| 2018 |
Opened Latvian Branch Office. |
| 2019 |
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| 2019 |
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| 2019 |
Opened Slovenian Branch Office. |
| 2019 |
Achieved sales of 20 billion yen. |
| 2020 |
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| 2020 |
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| 2020 |
Opened Matsumoto Branch Office. |
| 2020 |
Became the largest shareholder of Seven Industries, Ltd. |
| 2022 |
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| 2022 |
Achieved sales of 30 billion yen. |
| 2024 |
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| 2024 |
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| 2024 |
Opened Asia Branch Office. |
| 2025 |
公開買付を行い、セブン工業株式会社（東証スタンダード市場）の40％超の筆頭株主となる。 |
| 2025 |
株式会社アイランドプロファイルの株式を100％取得 |
| 2025 |
Through the TOB, became the largest shareholder of Seven Industries, Ltd. with a stake of over 40%. |
| 2025 |
Acquisition of Island Profile inc. (Window manufacture). |
