Architects Studio Japan

Architects Studio Japan Co., Ltd. (ASJ) is a Japanese company that operates a platform business linking architects, construction companies, and clients who want to build custom homes, renovations, or commercial facilities. Its core service is the ASJ Architect Network, one of Japan's largest networks of architects, with approximately 3,000 registered architects. The company also maintains a nationwide network of construction firms called "Architect's Specialty Store" (建築家の専門店) that carry out the actual building work. Through this platform, ASJ provides a place for clients to meet architects, discuss their plans, and receive support from concierge staff on financing, land acquisition, and contractor selection. The company was founded in November 2007 in Chuo-ku, Osaka, with the purpose of operating the ASJ Architect Network. In January 2008, it moved its head office to Konan, Minato-ku, Tokyo, and took over the ASJ Architect Network business from the newly established Ikkensetsu.com Co., Ltd. ASJ listed on the Tokyo Stock Exchange Mothers market in December 2013 and transitioned to the Growth market in April 2022 following the exchange's market reorganization. It has opened permanent showrooms in Yokohama and Tokyo, and has established consolidated subsidiaries TEMPO NETWORK and CONSTRUCTION NETWORK. ASJ's business divisions include the architect proposal business, environmental business, and IT/overseas business. It also engages in cultural activities supporting architects and students, and publishes the monthly information magazine "A-Style Monthly" and the Japanese edition of the Italian architecture magazine "CASABELLA JAPAN." The company is headquartered in Tokyo with an Osaka office, and its representative director is Yuhei Maruyama.

Architects Studio Japan Co., Ltd. was established in November 2007 in Chuo-ku, Osaka, with capital of 803 thousand yen, for the primary purpose of operating the ASJ Architect Network business. In January 2008, the company relocated its head office to Konan, Minato-ku, Tokyo, and established an Osaka branch at the former head office location. At the same time, it took over the ASJ Architect Network business from the newly established Ikkensetsu.com Co., Ltd. In December 2013, the company listed its shares on the Tokyo Stock Exchange Mothers market. The following year, in April 2014, it opened its first permanent showroom, ASJ YOKOHAMA CELL, in Nishi-ku, Yokohama. In April 2016, it opened ASJ TOKYO CELL in Chiyoda-ku, Tokyo. In January 2017, the head office was moved to Hamamatsucho, Minato-ku, Tokyo, and the Osaka branch was relocated to Doyama-cho, Kita-ku, Osaka. In May 2019, ASJ Yokohama Satellite was opened in Nishi-ku, Yokohama. In December 2021, the company established a consolidated subsidiary, TEMPO NETWORK Co., Ltd., through a corporate split. In April 2022, following the reorganization of the Tokyo Stock Exchange, the company transitioned from the Mothers market to the Growth market. In the same month, it established another consolidated subsidiary, CONSTRUCTION NETWORK Co., Ltd. As of 2022, the ASJ Architect Network had approximately 2,980 registered architects and several hundred participating construction companies. The company continues to operate its platform business, publishing the monthly magazine "A-Style Monthly" and the Japanese edition of the Italian architecture magazine "CASABELLA JAPAN." It also engages in cultural activities to support architects and students and to promote architectural culture. In 2026, the company announced the launch of an environmental business and a business partnership with New Zealand construction company Japan Homes, as well as an MOU with Permits AI.

• Established in Chuo-ku, Osaka, with capital of 803 thousand yen to operate the ASJ Architect Network business.

• Moved head office to Konan, Minato-ku, Tokyo; established Osaka branch; took over ASJ Architect Network business from Ikkensetsu.com Co., Ltd.

• Listed on the Tokyo Stock Exchange Mothers market.

• Opened ASJ YOKOHAMA CELL permanent showroom in Nishi-ku, Yokohama.

• Opened ASJ TOKYO CELL permanent showroom in Chiyoda-ku, Tokyo.

• Moved head office to Hamamatsucho, Minato-ku, Tokyo; relocated Osaka branch to Doyama-cho, Kita-ku, Osaka.

• Opened ASJ Yokohama Satellite in Nishi-ku, Yokohama.

• Established consolidated subsidiary TEMPO NETWORK Co., Ltd. through corporate split.

• Transitioned from Mothers market to Growth market; established consolidated subsidiary CONSTRUCTION NETWORK Co., Ltd.

• Announced business partnership with New Zealand construction company Japan Homes and MOU with Permits AI.

• Launched environmental business.

A platform that connects clients with architects and builders, emphasizing "building homes with architects" and providing end-to-end support from planning to completion.

• ASJ Architect Network

  One of Japan's largest networks of architects, with approximately 3,000 registered architects, connecting them with clients and construction companies.

• Architect's Specialty Store (建築家の専門店)

  A nationwide network of construction companies that carry out building work for projects matched through ASJ.

• A-Style Monthly

  Monthly information magazine about homes, distributed free to members.

• CASABELLA JAPAN

  Japanese edition of the Italian architecture magazine CASABELLA.

1. 1HOME - ARCHITECTS STUDIO JAPANcorporate.asj-net.com
2. 2アーキテクツ・スタジオ・ジャパン - Wikipediaja.wikipedia.org
3. 3Architects Studio Japan - Wikidatawikidata.org