YUMESHIN Co., Ltd.

YUMESHIN Co., Ltd. (株式会社夢真) is a Japanese company headquartered in Toranomon, Minato, Tokyo, specializing in the construction industry. Its core businesses are the dispatch of construction management engineers and CAD operators, the production of construction drawings (sekou-zu sakuzu), and media operations. The company traces its origins to September 1976, when it was established as an architectural design office. Over the following decades it expanded into overseas drafting networks, began dispatching construction engineers in 1991, and eventually became a dedicated operating company within a larger corporate group. In 2005 the company was renamed Yumeshin Holdings Co., Ltd. and later transitioned to a pure holding company structure in October 2019, at which point YUMESHIN Co., Ltd. was established through a company split. In April 2021 Yumeshin Holdings merged with the former Benext Group, becoming Yumeshin Benext Group Co., Ltd., and in January 2023 the holding company changed its name to Open Up Group Inc. YUMESHIN Co., Ltd. operates as a subsidiary within this group, providing specialized staffing and engineering services to Japan's construction sector. Its media operations include the job site "Ore no Yume" for construction management positions and "NEXT ENGINEER" for engineers. The company moved its headquarters to Toranomon in June 2022. In January 2026, YUMESHIN Co., Ltd. is set to absorb the former Open Up Construction Co., Ltd. and rename itself as the new Open Up Construction Co., Ltd.

YUMESHIN Co., Ltd. was established in September 1976 as an architectural design office. In April 1985 it began forming overseas networks for construction drawing production, and in April 1987 it started placing orders for construction drawings with overseas design offices. In March 1991 it launched its construction engineer dispatch business. In September 2003 its parent company listed on the Tokyo Stock Exchange JASDAQ. In April 2004 the headquarters moved to Ikebukuro, and in April 2005 the company changed its name to Yumeshin Holdings Co., Ltd. In February 2006 the headquarters moved to Otsuka. In January 2012 it began deploying recruitment satellite "Yume Tansaku Cafe." In November 2014 the headquarters moved to Marunouchi. In October 2019 Yumeshin Holdings transitioned to a pure holding company structure and established YUMESHIN Co., Ltd. through a company split. In April 2021 Yumeshin Holdings merged with the former Benext Group, becoming Yumeshin Benext Group Co., Ltd. In June 2022 the headquarters moved to Toranomon. In January 2023 the pure holding company changed its name to Open Up Group Inc. In January 2026, YUMESHIN Co., Ltd. is scheduled to absorb the former Open Up Construction Co., Ltd. and rename itself as the new Open Up Construction Co., Ltd.

• 2026

  YUMESHIN Co., Ltd. to absorb former Open Up Construction Co., Ltd. and rename as new Open Up Construction Co., Ltd.

• 2023

  Pure holding company renamed Open Up Group Inc.

• 2022

  Headquarters moved to Toranomon.

• 2021

  Yumeshin Holdings merged with former Benext Group, becoming Yumeshin Benext Group Co., Ltd.

• 2019

  Yumeshin Holdings transitioned to pure holding company structure; YUMESHIN Co., Ltd. established through company split.

• 2014

  Headquarters moved to Marunouchi.

• 2012

  Began deploying recruitment satellite "Yume Tansaku Cafe."

• 2006

  Headquarters moved to Otsuka.

• 2005

  Company renamed Yumeshin Holdings Co., Ltd.

• 2004

  Headquarters moved to Ikebukuro.

• 2003

  Parent company listed on Tokyo Stock Exchange JASDAQ.

• 1991

  Launched construction engineer dispatch business.

• 1987

  Started placing orders for construction drawings with overseas design offices.

• 1985

  Began forming overseas networks for construction drawing production.

• 1976

  Established as an architectural design office.

Specialized staffing and engineering services for the construction industry in Japan.

• Construction management engineer dispatch

• CAD operator dispatch

• Construction drawing production

• Ore no Yume job site

• NEXT ENGINEER job site

1. 1YUMESHIN Co., Ltd. - Wikidatawikidata.org
2. 2夢真 - Wikipedia (Japanese)ja.wikipedia.org