CS Lamber Co., Ltd.

In 1981 (Showa 56), to expand the business of Nakai Zaimoku Co., Ltd., a Chiba branch was opened with two new employees, and customer development was undertaken.

In 1981 (Showa 56), to expand the business of Nakayi Materials Store Inc., two new employees were hired and the Chiba Branch was opened to pursue customer development.

To expand the business of Nakai Wood Store Co., Ltd., hired two new employees, opened a Chiba branch, and began customer development.

In 1983 (Showa 58), the Chiba branch of Nakai Zaimoku Co., Ltd. became independent. Chiba Nakai Zaimoku Co., Ltd. was established, and Chiyosuke Nakai (current representative) became president.

In 1983 (Showa 58), the Chiba Branch of Nakayi Materials Store Inc. became independent, establishing Chiba Nakayi Materials Store Inc., with Chiyosuke Nakayi appointed as representative director.

Independently evolved from Nakai Wood Store Co., Ltd. Chiba branch. Established Chiba Nakai Wood Store Co., Ltd., with Chiyosuke Nakai (current representative) appointed as CEO.

In 1984 (Showa 59), 600 tsubo of headquarters land was acquired in Nagasumahara-cho, Inage-ku, Chiba City, Chiba Prefecture.

In 1984 (Showa 59), a 600 tsubo headquarters site was acquired in Nagunohara-cho, Inage-ku, Chiba City, Chiba Prefecture.

Acquired 600 tsubo of headquarters site in Nagasumahara-cho, Inage-ku, Chiba City, Chiba Prefecture.

In 1986 (Showa 61), 900 tsubo of adjacent land to the headquarters was acquired in Nagasumahara-cho, Inage-ku, Chiba City, Chiba Prefecture.

In 1986 (Showa 61), a 900 tsubo adjacent site to the headquarters was acquired in Nagunohara-cho, Inage-ku, Chiba City, Chiba Prefecture.

Acquired 900 tsubo of land adjacent to the headquarters in Nagasumahara-cho, Inage-ku, Chiba City, Chiba Prefecture.

In 1988 (Showa 63), a real estate broker license was obtained, and the real estate division was established.

In 1988 (Showa 63), a real estate broker qualification was obtained, and the real estate division was established.

Obtained real estate agent qualification; established the real estate division.

In 1991 (Heisei 3), a new company building and employee dormitory were constructed in Inage-ku, Chiba City. A dedicated pre-cutting factory was established in Fukushima, and the pre-cutting business commenced.

In 1991 (Heisei 3), a new company building and employee dormitory were constructed in Inage-ku, Chiba City, and a dedicated pre-cut factory was established in Fukushima, launching the pre-cut business.

Built a new headquarters and employee dormitory in Inage-ku, Chiba City, Chiba Prefecture. Established a dedicated pre-cut factory in Fukushima and launched the pre-cut business.

In 1995 (Heisei 7), the company name was changed from Chiba Nakai Zaimoku Co., Ltd. to CS Lamber Co., Ltd. A construction contractor license was obtained, and the order-based wooden house construction business was started.

In 1995 (Heisei 7), the company changed its name from Chiba Nakai Lumber Co., Ltd. to C.S. Lumber Co., Ltd., obtained construction industry qualifications, and started a custom-built wooden house construction business.

Changed company name from Chiba Nakai Wood Store Co., Ltd. to CS Lamba Co., Ltd. Obtained construction contractor license (General-7 No. 34298) and established the construction division. Began order-based construction of wooden houses.

In 1997 (Heisei 9), the first pre-cutting factory was established in Higashikatsushika City, Chiba Prefecture, and in-house pre-cutting processing began.

In 1997 (Heisei 9), the company established the first precut factory in Togane City, Chiba Prefecture, and began in-house precut processing.

Established the first pre-cut factory in Higashikatsushika City, Chiba Prefecture, and began in-house pre-cut processing.

In 2000 (Heisei 12), land and buildings were acquired in Takizawa, Tetsujosawa, Higashikatsushika City, Chiba Prefecture, and the headquarters was relocated. Capital was increased to 90 million yen.

In 2000 (Heisei 12), the company acquired about 9,000 tsubo of land and about 1,400 tsubo of buildings in Takizawa, Togane City, Chiba Prefecture, and relocated its headquarters. Capital was increased to 90 million yen.

Under the Small and Medium Enterprise Management Innovation Support Act (Chiba Prefecture Application No. 1), acquired approximately 9,000 tsubo of land and about 1,400 tsubo of buildings (offices, factories) in Takizawa, Tetsuzawa, Higashikatsushika City, Chiba Prefecture. Moved headquarters from Inage-ku, Chiba City, Chiba Prefecture. Capital increased (3:5 shareholder allocation, third-party allocation) to 90 million yen.

In 2001 (Heisei 13), land adjacent to the headquarters was acquired, and capital was increased to 99 million yen.

In 2001 (Heisei 13), the company acquired 5,600 tsubo of land adjacent to the headquarters, and capital was increased to 99 million yen.

Acquired 5,600 tsubo of land adjacent to the headquarters. Capital increased (third-party allocation) to 99 million yen.

In 2002 (Heisei 14), capital was increased to 290 million yen. The headquarters and Makuhari office obtained ISO 9001 certification.

In 2002 (Heisei 14), capital increased to 290 million yen through additional funding, and the headquarters and Makuhari branch obtained ISO9001 certification.

Capital increased (exercise of new share subscription rights) to 290 million yen. Both the headquarters and Makuhari office obtained ISO 9001 certification.

In 2003 (Heisei 15), 3,170 tsubo of land was acquired in Fujidai, Higashikatsushika City, Chiba Prefecture.

In 2003 (Heisei 15), the company acquired 3,170 tsubo of land in Fujii-dai, Togane City, Chiba Prefecture.

Acquired 3,170 tsubo of land in Fujidai, Higashikatsushika City, Chiba Prefecture (adjacent to headquarters).

In 2004 (Heisei 16), capital was increased to 310 million yen.

In 2004 (Heisei 16), capital was increased to 310 million yen through additional funding.

Capital increased (third-party allocation) to 310 million yen.

In 2005 (Heisei 17), the construction division was merged into NANOHA Housing Co., Ltd. A new company, CLC Corporation, was established, and the real estate division was spun off.

In 2005 (Heisei 17), the company integrated its construction division into its subsidiary, Nanohana Housing Co., Ltd., established CLC Corporation, and spun off the real estate division.

Integrated the construction division into subsidiary No. Hanahana Housing Co., Ltd. Established subsidiary CLC Corporation and spun off the real estate division.

In 2006 (Heisei 18), land and buildings were acquired in Kihara, Yamato City, Chiba Prefecture. A panel manufacturing seizing machine was introduced, and 2x4 panel manufacturing commenced.

In 2006 (Heisei 18), the company acquired 10,000 tsubo of land and 3,700 tsubo of buildings in Kihara, Sanmu City, Chiba Prefecture, introduced a panel manufacturing seeding machine, and started manufacturing panels using the 2×4 method.

Acquired 10,000 tsubo of land and 3,700 tsubo of buildings in Kihara, Yamato City, Chiba Prefecture. Introduced panel manufacturing seizing machine and started 2x4 panel production.

In 2007 (Heisei 19), Patent No. 3970309 was obtained. The 2×4 division of Kobarin Kyōyo Factory Inc. was acquired through a business transfer.

In 2007 (Heisei 19), the company obtained Patent No. 3970309 and acquired the 2×4 division of Kobarin Keiyo Factory through business transfer.

Obtained Patent No. 3,970,309 'Method for generating data for individual pre-cutting' (yield calculation system). Acquired the 2x4 division of Kobarinkyoho Factory Co., Ltd. through business transfer.

Acquired Patent No. 3970309 "Method for generating data for individual precut" (yield calculation system). In September, acquired the 2×4 division of Kobarin Keiyo Factory through business transfer.

In 2010 (Heisei 22), a permit for specialized construction business was obtained. In April, a presentation of the overview of "TJI Value" was held.

In April 2010 (Heisei 22), the company obtained a permit for specific construction work, and in August held an overview presentation of 'TJI Value'.

Obtained permission for specified construction business.

Holding an overview announcement for "TJI Value."

In February 2011 (Heisei 23), "Super Strong Structural Body Value" achieved the top national order count. In December, the subsidiary Prosto Inc. (now CS Home Inc.) started a real estate sales business.

In February 2011 (Heisei 23), the company achieved the top number of orders nationwide for 'Super Strong Structural Value.' In December, it started real estate sales business at its subsidiary, Prost Co., Ltd. (now C.S. Home Co., Ltd.).

Achieved the number one order volume nationwide for "Super Strong Structural Value."

Start of real estate sales business at subsidiary Prost Co., Ltd. (now C.S. Home Co., Ltd.).

In July 2012 (Heisei 24), the Hachioji Sales Office was opened in Hachioji City, Tokyo.

In July 2012 (Heisei 24), the company opened Hachioji Sales Office in Hachioji City, Tokyo.

Opened Hachioji Sales Office in Hachioji City, Tokyo.

In April 2013 (Heisei 25), the 2×4 Multi-Cut Line and Panel Seizing Line were expanded. In September, the Tokinoko Panel Factory was opened. In October, CSL CAD VIETNAM COMPANY LIMITED was established in Ho Chi Minh City, Vietnam.

In April 2013 (Heisei 25), the company expanded the 2×4 multi-cut line and panel seeding line. In September, it opened Togane Panel Factory. In October, it established CSL CAD VIETNAM COMPANY LIMITED in Ho Chi Minh City, Vietnam.

Expanded 2×4 multi-cut line and panel sashing line.

Established Tokinaka Panel Factory.

Established CSL CAD VIETNAM COMPANY LIMITED in Ho Chi Minh City, Vietnam.

In March 2014 (Heisei 26), the Saitama Sales Office was relocated to Minozuka Ward, Saitama City. In September, a new factory was built on adjacent land to the Tokinoko Factory, becoming the Tokinoko Panel Factory.

In March 2014 (Heisei 26), the company relocated the Saitama Sales Office to Minuma Ward, Saitama City. In September, it built a new factory adjacent to the Togane Factory, called Togane Panel Factory.

Relocated Saitama Sales Office to Minuma Ward, Saitama City, Saitama Prefecture.

Built a new factory on adjacent land to Tokinaka Factory, designated as Tokinaka Panel Factory.

In September 2015 (Heisei 27), the headquarters was moved within the Makuhari Office. A second factory was newly established within the Yamabushi Factory, refreshing the conventional frame pre-cut processing machinery. In November, the Hachioji Sales Office was relocated.

In September 2015 (Heisei 27), the company moved its headquarters into the Makuhari branch. It established a second factory within Sanmu Factory and renewed the traditional axis assembly precut processing machines. In November, it relocated Hachioji Sales Office to Owada Town.

Relocated headquarters to Makuhari Business Office. Established a second factory within the Yamatake Factory site. Upgraded conventional axis pre-cut processing machines.

Relocated Hachioji Sales Office to Yamato-cho, Hachioji City, Tokyo.

In November 2017 (Heisei 29), the company was listed on the Tokyo Stock Exchange JASDAQ.

In November 2017 (Heisei 29), the company was listed on the JASDAQ of the Tokyo Stock Exchange.

Listed on the Tokyo Stock Exchange JASDAQ.

In June 2018 (Heisei 30), the subsidiary CS Material Inc. was established. In November, the Hachioji Sales Office was closed.

In June 2018 (Heisei 30), the company established a subsidiary, C.S. Material Co., Ltd. In November, it closed the Hachioji Sales Office.

Established a subsidiary, C.S. Material Co., Ltd.

Closed Hachioji Sales Office.

In February 2019 (Heisei 31), the fiscal year was changed to run from June 1 to May 31 of the following year.

In February 2019 (Heisei 31), the company changed its fiscal year to run from June 1 to May 31 of the following year.

Changed the fiscal year to "June 1 to May 31 of the following year."

In June 2020 (Reiwa 2), the subsidiary CLC Corporation Inc. was absorbed and merged. In December, CS Real Estate Inc. and CS Real Estate Lease Inc. were established.

In June 2020 (Reiwa 2), the company merged with its subsidiary CLC Corporation. In December, it established C.S. Real Estate Co., Ltd. and C.S. Leasing Co., Ltd.

Absorbed and merged subsidiary CLC Corporation.

Established subsidiaries C.S. Real Estate and C.S. Real Estate Lease.

In June 2021 (Reiwa 3), CS Build Inc. was established. In December, the Saitama Sales Office was closed.

In June 2021 (Reiwa 3), established subsidiary CS Build Co., Ltd. Closed the Saitama office in December.

Established subsidiary C.S. Build.

Closed Saitama Sales Office.

In April 2022 (Reiwa 4), the market classification was changed to the Tokyo Stock Exchange Standard Market.

In April 2022 (Reiwa 4), changed market classification to the Tokyo Stock Exchange Standard market.

Changed market classification to the Tokyo Stock Exchange Standard Market.

In January 2024 (Reiwa 6), the Construction Division was established in Kamata, Tokyo, expanding the construction business area to Tokyo and Kanagawa Prefecture.

In January 2024 (Reiwa 6), established a construction division in Kamata, Tokyo, to expand the company's construction business into the Tokyo and Kanagawa areas.

Established a construction division in Kamata, Tokyo (expanding construction business area to Tokyo and Kanagawa Prefectures).