アークシステム 本社 Official site

Company information

Connecting trust through IT.

At Ark System, our mission is to aim for coexistence and mutual prosperity as "the best partner for our customers." We have been involved in solutions across various industries such as construction, finance, public services, and distribution, engaging in system development and system consulting. We continue to provide proposals and support tailored to our customers' needs, building trust between people and growing together with our customers. Utilizing the technology and know-how cultivated through our business, we developed the "Rakuou" series of estimation software for construction operations. This software supports various industries, including architecture, electrical, and mechanical equipment construction, significantly streamlining the process from takeoff to estimate creation. Currently, it has been adopted by over 2,100 companies, including major general contractors. In addition to our flagship model "Rakuou 3," we also offer subscription versions that are easy to start and continue, such as "Rakuou Link" and "Rakuou Crew." For takeoff tasks, we provide "Hiroi-kun III," which allows for easy extraction of lengths, areas, and quantities with just a mouse click from drawings. We have also launched a subscription service that can be started casually from ¥3,800 (tax included) per month. We aim to improve our customers' operational efficiency and productivity, creating a comfortable work environment.

Business Activities

■General development of business systems ■Solution services related to IT implementation within companies ■Planning, development, and sales of packaged software  ●Estimation software 'Rakuou' series  ・Rakuou 3: Attractive for its flexible customization and robust support system for operation.  ・Rakuou Link / Rakuou Crew: Easy to start and easy to continue with a monthly subscription model.  ・Extraction software 'Hiroi-kun III': Simply click with the mouse on PDF or CAD drawing data to extract. 【Product demos available】Please feel free to contact us.

Key Partners

IT and Information Services Industry Construction Industry Electrical Equipment Installation Industry Mechanical Equipment Installation Industry Air Conditioning Equipment Installation Industry Sanitary Equipment Installation Industry Building Maintenance Industry

※- Nishimatsu Construction Co., Ltd. - Tokyu Construction Co., Ltd. - Keio Electric Railway Co., Ltd. - Taisei Yuraku Real Estate Co., Ltd. - Kokuyo Co., Ltd. - Panasonic EW Engineering Co., Ltd. - Panasonic Industrial Systems Co., Ltd. - EXIO Group, Inc. - Tokyo Metro Electric Maintenance Co., Ltd. *Formerly: Subway Maintenance Co., Ltd. - Zenitaka Corporation

Company overview

  • Company name アークシステム 本社
  • Establishment August 3, 1988
  • capital 2000Ten thousand yen
  • number of employees 98person
  • Address 〒220-0011 Kanagawa/ Nishi-ku, Yokohama-shi/ 4th Floor, Wisport Building, 32 Takashima 2-chome, Yokohama East Exit View on map
  • TEL 045-451-5121
  • FAX 045-451-5123

Business Locations (1)